Guo, Weichao; Wen, Yongming; Wu, Huoxiong; Yang, Dongyong On the compactness of oscillation and variation of commutators. (English) Zbl 07332199 Banach J. Math. Anal. 15, No. 2, Paper No. 37, 29 p. (2021). MSC: 42B20 42B25 PDF BibTeX XML Cite \textit{W. Guo} et al., Banach J. Math. Anal. 15, No. 2, Paper No. 37, 29 p. (2021; Zbl 07332199) Full Text: DOI
Antil, Harbir; Kouri, Drew P.; Pfefferer, Johannes Risk-averse control of fractional diffusion with uncertain exponent. (English) Zbl 07332070 SIAM J. Control Optim. 59, No. 2, 1161-1187 (2021). MSC: 35J75 65D05 26A33 49J20 49M25 65M12 65M15 65M60 PDF BibTeX XML Cite \textit{H. Antil} et al., SIAM J. Control Optim. 59, No. 2, 1161--1187 (2021; Zbl 07332070) Full Text: DOI
Bruce, Benjamin Baker; Oliveira e. Silva, Diogo; Stovall, Betsy Restriction inequalities for the hyperbolic hyperboloid. (English. French summary) Zbl 07331625 J. Math. Pures Appl. (9) 149, 186-215 (2021). MSC: 42B10 35L10 42B20 42B37 51M10 PDF BibTeX XML Cite \textit{B. B. Bruce} et al., J. Math. Pures Appl. (9) 149, 186--215 (2021; Zbl 07331625) Full Text: DOI
Langowski, Bartosz; Nowak, Adam Mapping properties of fundamental harmonic analysis operators in the exotic Bessel framework. (English) Zbl 07330767 J. Math. Anal. Appl. 499, No. 2, Article ID 125061, 36 p. (2021). MSC: 42B20 PDF BibTeX XML Cite \textit{B. Langowski} and \textit{A. Nowak}, J. Math. Anal. Appl. 499, No. 2, Article ID 125061, 36 p. (2021; Zbl 07330767) Full Text: DOI
Guliyev, V. S. Generalized Sobolev-Morrey estimates for hypoelliptic operators on homogeneous groups. (English) Zbl 07330389 Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 115, No. 2, Paper No. 69, 23 p. (2021). MSC: 35B65 35H10 35R03 42B20 42B35 43A15 43A80 PDF BibTeX XML Cite \textit{V. S. Guliyev}, Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 115, No. 2, Paper No. 69, 23 p. (2021; Zbl 07330389) Full Text: DOI
Qin, Moyan; Xue, Qingying Weighted and unweighted Solyanik estimates for the multilinear strong maximal function. (English) Zbl 07329832 Result. Math. 76, No. 1, Paper No. 6, 19 p. (2021). MSC: 42B25 42B20 42B35 PDF BibTeX XML Cite \textit{M. Qin} and \textit{Q. Xue}, Result. Math. 76, No. 1, Paper No. 6, 19 p. (2021; Zbl 07329832) Full Text: DOI
Pan, Yifei; Zhang, Yuan Hölder estimates for the \(\overline{\partial}\) problem for \((p,q)\) forms on product domains. (English) Zbl 07329520 Int. J. Math. 32, No. 3, Article ID 2150014, 20 p. (2021). MSC: 32W05 32A26 32A55 PDF BibTeX XML Cite \textit{Y. Pan} and \textit{Y. Zhang}, Int. J. Math. 32, No. 3, Article ID 2150014, 20 p. (2021; Zbl 07329520) Full Text: DOI
Mcdonald, Alex Areas spanned by point configurations in the plane. (English) Zbl 07329489 Proc. Am. Math. Soc. 149, No. 5, 2035-2049 (2021). MSC: 52C10 28A75 42B20 51A20 PDF BibTeX XML Cite \textit{A. Mcdonald}, Proc. Am. Math. Soc. 149, No. 5, 2035--2049 (2021; Zbl 07329489) Full Text: DOI
Genschaw, Alyssa; Hofmann, Steve BMO solvability and absolute continuity of caloric measure. (English) Zbl 07328999 Potential Anal. 54, No. 3, 451-469 (2021). MSC: 42B25 42B20 42B30 35J25 PDF BibTeX XML Cite \textit{A. Genschaw} and \textit{S. Hofmann}, Potential Anal. 54, No. 3, 451--469 (2021; Zbl 07328999) Full Text: DOI
Cheng, Meifang; Lee, Ming-Yi; Lin, Chin-Cheng; Qu, Meng Monge-Ampère singular integral operators acting on Triebel-Lizorkin spaces. (English) Zbl 07328930 Appl. Anal. 100, No. 5, 923-963 (2021). MSC: 42B20 42B35 PDF BibTeX XML Cite \textit{M. Cheng} et al., Appl. Anal. 100, No. 5, 923--963 (2021; Zbl 07328930) Full Text: DOI
Suzuki, Masamitsu Local existence and nonexistence for fractional in time weakly coupled reaction-diffusion systems. (English) Zbl 07328519 SN Partial Differ. Equ. Appl. 2, No. 1, Paper No. 2, 27 p. (2021). MSC: 35R11 35K57 35K51 35A01 26A33 46E35 PDF BibTeX XML Cite \textit{M. Suzuki}, SN Partial Differ. Equ. Appl. 2, No. 1, Paper No. 2, 27 p. (2021; Zbl 07328519) Full Text: DOI
Isralowitz, Joshua; Pott, Sandra; Rivera-Ríos, Israel P. Sharp \(A_1\) weighted estimates for vector-valued operators. (English) Zbl 07328230 J. Geom. Anal. 31, No. 3, 3085-3116 (2021). MSC: 47G 42B20 PDF BibTeX XML Cite \textit{J. Isralowitz} et al., J. Geom. Anal. 31, No. 3, 3085--3116 (2021; Zbl 07328230) Full Text: DOI
Hu, Guoen; Lai, Xudong; Xue, Qingying On the composition of rough singular integral operators. (English) Zbl 07328220 J. Geom. Anal. 31, No. 3, 2742-2765 (2021). MSC: 42B20 47B33 PDF BibTeX XML Cite \textit{G. Hu} et al., J. Geom. Anal. 31, No. 3, 2742--2765 (2021; Zbl 07328220) Full Text: DOI
Zheng, Taotao; Chen, Jiecheng; Dai, Jiawei; He, Shaoyong; Tao, Xiangxing Calderón-Zygmund operators on homogeneous product Lipschitz spaces. (English) Zbl 07328188 J. Geom. Anal. 31, No. 2, 2033-2057 (2021). MSC: 42B20 42B25 46E35 PDF BibTeX XML Cite \textit{T. Zheng} et al., J. Geom. Anal. 31, No. 2, 2033--2057 (2021; Zbl 07328188) Full Text: DOI
Duong, Xuan Thinh; Gong, Ruming; Kuffner, Marie-Jose S.; Li, Ji; Wick, Brett D.; Yang, Dongyong Two weight commutators on spaces of homogeneous type and applications. (English) Zbl 07327673 J. Geom. Anal. 31, No. 1, 980-1038 (2021). MSC: 42B30 42B20 42B35 30H05 PDF BibTeX XML Cite \textit{X. T. Duong} et al., J. Geom. Anal. 31, No. 1, 980--1038 (2021; Zbl 07327673) Full Text: DOI
Garg, Rahul; Roncal, Luz; Shrivastava, Saurabh Quantitative weighted estimates for Rubio de Francia’s Littlewood-Paley square function. (English) Zbl 07327664 J. Geom. Anal. 31, No. 1, 748-771 (2021). MSC: 42B20 42B25 42B35 PDF BibTeX XML Cite \textit{R. Garg} et al., J. Geom. Anal. 31, No. 1, 748--771 (2021; Zbl 07327664) Full Text: DOI
Wang, Songbai; Yang, Dachun; Yuan, Wen; Zhang, Yangyang Weak Hardy-type spaces associated with ball quasi-Banach function spaces. II: Littlewood-Paley characterizations and real interpolation. (English) Zbl 07327661 J. Geom. Anal. 31, No. 1, 631-696 (2021). MSC: 42B30 42B25 42B20 42B35 46E30 30H10 PDF BibTeX XML Cite \textit{S. Wang} et al., J. Geom. Anal. 31, No. 1, 631--696 (2021; Zbl 07327661) Full Text: DOI
Chao, Zhang; Ma, Tao; Torrea, José L. Boundedness of differential transforms for one-sided fractional Poisson-type operator sequence. (English) Zbl 07327639 J. Geom. Anal. 31, No. 1, 67-99 (2021). MSC: 42B20 42B25 PDF BibTeX XML Cite \textit{Z. Chao} et al., J. Geom. Anal. 31, No. 1, 67--99 (2021; Zbl 07327639) Full Text: DOI
Bliev, N. K.; Tulenov, K. S. Noetherian solvability of an operator singular integral equation with a Carleman shift in fractional spaces. (English) Zbl 07327556 Complex Var. Elliptic Equ. 66, No. 2, 336-346 (2021). MSC: 30H25 30H05 30H25 45E05 30E20 PDF BibTeX XML Cite \textit{N. K. Bliev} and \textit{K. S. Tulenov}, Complex Var. Elliptic Equ. 66, No. 2, 336--346 (2021; Zbl 07327556) Full Text: DOI
Bui, The Anh; Duong, Xuan Thinh Higher-order Riesz transforms of Hermite operators on new Besov and Triebel-Lizorkin spaces. (English) Zbl 07326823 Constr. Approx. 53, No. 1, 85-120 (2021). MSC: 42B35 42B20 35J15 30H25 PDF BibTeX XML Cite \textit{T. A. Bui} and \textit{X. T. Duong}, Constr. Approx. 53, No. 1, 85--120 (2021; Zbl 07326823) Full Text: DOI
Li, Junfeng; Yu, Haixia Bilinear Hilbert transforms and (sub)bilinear maximal functions along convex curves. (English) Zbl 07326763 Pac. J. Math. 310, No. 2, 375-446 (2021). MSC: 42B20 42B25 47B38 PDF BibTeX XML Cite \textit{J. Li} and \textit{H. Yu}, Pac. J. Math. 310, No. 2, 375--446 (2021; Zbl 07326763) Full Text: DOI
Branquinho, Amílcar; Foulquié-Moreno, Ana; Mañas-Baena, Manuel Riemann-Hilbert problem and matrix biorthogonal polynomials. (English) Zbl 07326234 Marcellán, Francisco (ed.) et al., Orthogonal polynomials: current trends and applications. Proceedings of the 7th EIBPOA conference, Universidad Carlos III de Madrid, Leganés, Spain, July 3–6, 2018. Cham: Springer (ISBN 978-3-030-56189-5/pbk; 978-3-030-56190-1/ebook). SEMA SIMAI Springer Series 22, 1-15 (2021). MSC: 33D45 15A18 34A05 42C05 PDF BibTeX XML Cite \textit{A. Branquinho} et al., SEMA SIMAI Springer Ser. 22, 1--15 (2021; Zbl 07326234) Full Text: DOI
Hu, Bin; Hu, Zongjun; Li, Cong; Niu, Zhongrong; Li, Xiaobao A fast multipole boundary element method based on higher order elements for analyzing 2-D potential problems. (English) Zbl 07325135 Comput. Math. Appl. 87, 65-76 (2021). MSC: 65 76 PDF BibTeX XML Cite \textit{B. Hu} et al., Comput. Math. Appl. 87, 65--76 (2021; Zbl 07325135) Full Text: DOI
Bui, The Anh; Li, Ji; Ly, Fu Ken Weighted embeddings for function spaces associated with Hermite expansions. (English) Zbl 07324357 J. Approx. Theory 264, Article ID 105534, 25 p. (2021). MSC: 46E35 42B20 PDF BibTeX XML Cite \textit{T. A. Bui} et al., J. Approx. Theory 264, Article ID 105534, 25 p. (2021; Zbl 07324357) Full Text: DOI
Du, Xiumin; Guth, Larry; Ou, Yumeng; Wang, Hong; Wilson, Bobby; Zhang, Ruixiang Weighted restriction estimates and application to Falconer distance set problem. (English) Zbl 07324250 Am. J. Math. 143, No. 1, 175-211 (2021). MSC: 28A80 28A75 42B20 PDF BibTeX XML Cite \textit{X. Du} et al., Am. J. Math. 143, No. 1, 175--211 (2021; Zbl 07324250) Full Text: DOI
Suzuki, Soichiro The Calderón-Zygmund theorem with an \(L^1\) mean Hörmander condition. (English) Zbl 07321744 J. Fourier Anal. Appl. 27, No. 2, Paper No. 10, 12 p. (2021). MSC: 42B20 PDF BibTeX XML Cite \textit{S. Suzuki}, J. Fourier Anal. Appl. 27, No. 2, Paper No. 10, 12 p. (2021; Zbl 07321744) Full Text: DOI
Ramos, João P. G. Uniform bounds for oscillatory and polynomial Carleson operators. (English) Zbl 07321739 J. Fourier Anal. Appl. 27, No. 1, Paper No. 5, 15 p. (2021). MSC: 42A20 42A50 42B25 PDF BibTeX XML Cite \textit{J. P. G. Ramos}, J. Fourier Anal. Appl. 27, No. 1, Paper No. 5, 15 p. (2021; Zbl 07321739) Full Text: DOI
Ginoux, Jean-Marc; Llibre, Jaume; Valls, Claudia Dynamics and Darboux integrability of the \(D_2\) polynomial vector fields of degree 2 in \(\mathbb{R}^3\). (English) Zbl 07321623 Math. Phys. Anal. Geom. 24, No. 1, Paper No. 1, 16 p. (2021). Reviewer: Regilene Oliveira (São Paulo) MSC: 34A05 34C05 34C14 PDF BibTeX XML Cite \textit{J.-M. Ginoux} et al., Math. Phys. Anal. Geom. 24, No. 1, Paper No. 1, 16 p. (2021; Zbl 07321623) Full Text: DOI
Kaisserli, Z.; Bouagada, D. Solution of state-space singular continuous-time fractional linear systems using Sumudu transform. (English) Zbl 07319670 Lobachevskii J. Math. 42, No. 1, 110-117 (2021). MSC: 93C15 26A33 93C05 PDF BibTeX XML Cite \textit{Z. Kaisserli} and \textit{D. Bouagada}, Lobachevskii J. Math. 42, No. 1, 110--117 (2021; Zbl 07319670) Full Text: DOI
Maldonado, Diego On certain degenerate and singular elliptic PDEs III: nondivergence form operators and \(RH_\infty\)-weights. (English) Zbl 07319450 J. Differ. Equations 280, 805-840 (2021). MSC: 35J70 35J96 35J75 31E05 35J60 42B20 35B45 42B25 PDF BibTeX XML Cite \textit{D. Maldonado}, J. Differ. Equations 280, 805--840 (2021; Zbl 07319450) Full Text: DOI
Meinlschmidt, Hannes; Rehberg, Joachim Extrapolated elliptic regularity and application to the van Roosbroeck system of semiconductor equations. (English) Zbl 07319436 J. Differ. Equations 280, 375-404 (2021). Reviewer: Rodica Luca (Iaşi) MSC: 35J25 35B65 35R05 35Q81 92E20 47D06 46E35 35J15 42B20 47B44 PDF BibTeX XML Cite \textit{H. Meinlschmidt} and \textit{J. Rehberg}, J. Differ. Equations 280, 375--404 (2021; Zbl 07319436) Full Text: DOI
Deringoz, Fatih; Dorak, Kendal; Guliyev, Vagif S. Characterization of the boundedness of fractional maximal operator and its commutators in Orlicz and generalized Orlicz-Morrey spaces on spaces of homogeneous type. (English) Zbl 07319387 Anal. Math. Phys. 11, No. 2, Paper No. 63, 31 p. (2021). MSC: 42B20 42B25 42B35 PDF BibTeX XML Cite \textit{F. Deringoz} et al., Anal. Math. Phys. 11, No. 2, Paper No. 63, 31 p. (2021; Zbl 07319387) Full Text: DOI
Zhang, Xiao; Yang, Bo; Wei, Chaozhen; Luo, Maokang Bounded solution structure of Schrödinger equation in the presence of the minimal length and its effect: bound states in the continuum are universal. (English) Zbl 07319185 Commun. Nonlinear Sci. Numer. Simul. 96, Article ID 105694, 16 p. (2021). MSC: 81V45 35B25 81Q05 81Q15 81R60 81S40 35R11 81S07 46F10 PDF BibTeX XML Cite \textit{X. Zhang} et al., Commun. Nonlinear Sci. Numer. Simul. 96, Article ID 105694, 16 p. (2021; Zbl 07319185) Full Text: DOI
Prodanov, Dimiter Local generalizations of the derivatives on the real line. (English) Zbl 07319159 Commun. Nonlinear Sci. Numer. Simul. 96, Article ID 105576, 14 p. (2021). MSC: 26A27 26A30 26A15 26A33 26A16 41-02 PDF BibTeX XML Cite \textit{D. Prodanov}, Commun. Nonlinear Sci. Numer. Simul. 96, Article ID 105576, 14 p. (2021; Zbl 07319159) Full Text: DOI
Rodríguez-López, Salvador; Rule, David; Staubach, Wolfgang Global boundedness of a class of multilinear Fourier integral operators. (English) Zbl 07319050 Forum Math. Sigma 9, Paper No. e14, 45 p. (2021). MSC: 35S30 35B65 42B20 30H10 30H35 42B25 42B35 PDF BibTeX XML Cite \textit{S. Rodríguez-López} et al., Forum Math. Sigma 9, Paper No. e14, 45 p. (2021; Zbl 07319050) Full Text: DOI
Arias, Sergi; Rodríguez-López, Salvador Some endpoint estimates for bilinear Coifman-Meyer multipliers. (English) Zbl 07318542 J. Math. Anal. Appl. 498, No. 2, Article ID 124972, 28 p. (2021). MSC: 42B15 42B20 46E35 PDF BibTeX XML Cite \textit{S. Arias} and \textit{S. Rodríguez-López}, J. Math. Anal. Appl. 498, No. 2, Article ID 124972, 28 p. (2021; Zbl 07318542) Full Text: DOI
Dao, Nguyen Anh; Krantz, Steven G.; Lam, Nguyen Cauchy integral commutators and Hardy factorization on Lorentz spaces. (English) Zbl 07318440 J. Math. Anal. Appl. 498, No. 1, Article ID 124926, 23 p. (2021). MSC: 42B20 46E35 47G10 PDF BibTeX XML Cite \textit{N. A. Dao} et al., J. Math. Anal. Appl. 498, No. 1, Article ID 124926, 23 p. (2021; Zbl 07318440) Full Text: DOI
Zhang, Yuqing; Wu, Huaiqin; Cao, Jinde Global Mittag-Leffler consensus for fractional singularly perturbed multi-agent systems with discontinuous inherent dynamics via event-triggered control strategy. (English) Zbl 07315765 J. Franklin Inst. 358, No. 3, 2086-2114 (2021). MSC: 93D50 93A16 93C65 93C70 26A33 PDF BibTeX XML Cite \textit{Y. Zhang} et al., J. Franklin Inst. 358, No. 3, 2086--2114 (2021; Zbl 07315765) Full Text: DOI
Hong, Qing; Hu, Guorong Equivalent quasi-norms in Besov and Triebel-Lizorkin spaces on Lie groups of polynomial growth. (English) Zbl 07315657 J. Math. Anal. Appl. 495, No. 2, Article ID 124769, 20 p. (2021). MSC: 46E35 42B35 42B20 43A05 PDF BibTeX XML Cite \textit{Q. Hong} and \textit{G. Hu}, J. Math. Anal. Appl. 495, No. 2, Article ID 124769, 20 p. (2021; Zbl 07315657) Full Text: DOI
Pilod, Didier; Saut, Jean-Claude; Selberg, Sigmund; Tesfahun, Achenef Dispersive estimates for full dispersion KP equations. (English) Zbl 07312808 J. Math. Fluid Mech. 23, No. 1, Paper No. 25, 25 p. (2021). MSC: 35B45 35Q35 35Q53 42B20 PDF BibTeX XML Cite \textit{D. Pilod} et al., J. Math. Fluid Mech. 23, No. 1, Paper No. 25, 25 p. (2021; Zbl 07312808) Full Text: DOI
Dao, Nguyen Anh; Krantz, Steven G. Lorentz boundedness and compactness characterization of integral commutators on spaces of homogeneous type. (English) Zbl 07312789 Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 203, Article ID 112162, 23 p. (2021). MSC: 42B20 42A85 42B30 PDF BibTeX XML Cite \textit{N. A. Dao} and \textit{S. G. Krantz}, Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 203, Article ID 112162, 23 p. (2021; Zbl 07312789) Full Text: DOI
Fan, Yun; Gao, Guilian Some characterizations of the generalized BMO spaces via the boundedness of maximal function commutators. (English) Zbl 07312079 Ann. Funct. Anal. 12, No. 2, Paper No. 25, 15 p. (2021). MSC: 42B30 42B25 42B20 42B35 PDF BibTeX XML Cite \textit{Y. Fan} and \textit{G. Gao}, Ann. Funct. Anal. 12, No. 2, Paper No. 25, 15 p. (2021; Zbl 07312079) Full Text: DOI
Pradolini, Gladis; Ramos, Wilfredo; Recchi, Jorgelina On the optimal numerical parameters related with two weighted estimates for commutators of classical operators and extrapolation results. (English) Zbl 07311759 Collect. Math. 72, No. 1, 229-259 (2021). MSC: 42B20 42B25 42B35 PDF BibTeX XML Cite \textit{G. Pradolini} et al., Collect. Math. 72, No. 1, 229--259 (2021; Zbl 07311759) Full Text: DOI
Wang, Hongbin; Fu, Zunwei Estimates of commutators on Herz-type spaces with variable exponent and applications. (English) Zbl 07310728 Banach J. Math. Anal. 15, No. 2, Paper No. 36, 27 p. (2021). MSC: 42B20 42B35 46E30 PDF BibTeX XML Cite \textit{H. Wang} and \textit{Z. Fu}, Banach J. Math. Anal. 15, No. 2, Paper No. 36, 27 p. (2021; Zbl 07310728) Full Text: DOI
Zahl, Joshua New Kakeya estimates using Gromov’s algebraic lemma. (English) Zbl 07309950 Adv. Math. 380, Article ID 107596, 43 p. (2021). MSC: 42B25 42B20 42B10 14P10 PDF BibTeX XML Cite \textit{J. Zahl}, Adv. Math. 380, Article ID 107596, 43 p. (2021; Zbl 07309950) Full Text: DOI
Accomazzo, Natalia; Di Plinio, Francesco; Parissis, Ioannis Singular integrals along lacunary directions in \(\mathbb{R}^n\). (English) Zbl 07309944 Adv. Math. 380, Article ID 107580, 22 p. (2021). MSC: 42B20 42B25 PDF BibTeX XML Cite \textit{N. Accomazzo} et al., Adv. Math. 380, Article ID 107580, 22 p. (2021; Zbl 07309944) Full Text: DOI
Papageorgiou, Effie Oscillating multipliers on rank one locally symmetric spaces. (English) Zbl 07309681 J. Math. Anal. Appl. 494, No. 1, Article ID 124561, 13 p. (2021). MSC: 42B15 42B20 22E30 22E40 PDF BibTeX XML Cite \textit{E. Papageorgiou}, J. Math. Anal. Appl. 494, No. 1, Article ID 124561, 13 p. (2021; Zbl 07309681) Full Text: DOI
Chen, Ruyun; Yu, Di; Chen, Juan Computation of oscillatory integrals with an exponential kernel and Jacobi-type singularities. (English) Zbl 07309677 J. Math. Anal. Appl. 494, No. 1, Article ID 124448, 11 p. (2021). MSC: 65D30 42B20 PDF BibTeX XML Cite \textit{R. Chen} et al., J. Math. Anal. Appl. 494, No. 1, Article ID 124448, 11 p. (2021; Zbl 07309677) Full Text: DOI
Bez, Neal; Lee, Sanghyuk; Nakamura, Shohei Strichartz estimates for orthonormal families of initial data and weighted oscillatory integral estimates. (English) Zbl 07309662 Forum Math. Sigma 9, Paper No. e1, 52 p. (2021). MSC: 35B45 42B20 35P10 35B65 42B37 PDF BibTeX XML Cite \textit{N. Bez} et al., Forum Math. Sigma 9, Paper No. e1, 52 p. (2021; Zbl 07309662) Full Text: DOI
Anastassiou, George A. Approximation by multivariate generalized Poisson-Cauchy type singular integral operators. (English) Zbl 07309508 Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 115, No. 2, Paper No. 61, 34 p. (2021). MSC: 26A15 26D15 41A17 41A35 PDF BibTeX XML Cite \textit{G. A. Anastassiou}, Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 115, No. 2, Paper No. 61, 34 p. (2021; Zbl 07309508) Full Text: DOI
Ramos, João P. G. The Hilbert transform along the parabola, the polynomial Carleson theorem and oscillatory singular integrals. (English) Zbl 07307507 Math. Ann. 379, No. 1-2, 159-185 (2021). MSC: 42B20 42B25 44A12 PDF BibTeX XML Cite \textit{J. P. G. Ramos}, Math. Ann. 379, No. 1--2, 159--185 (2021; Zbl 07307507) Full Text: DOI
Hytönen, Tuomas An operator-valued \(T(1)\) theorem for symmetric singular integrals in UMD spaces. (English) Zbl 07307004 J. Funct. Anal. 280, No. 7, Article ID 108933, 18 p. (2021). MSC: 42B20 42B30 46E40 47B35 PDF BibTeX XML Cite \textit{T. Hytönen}, J. Funct. Anal. 280, No. 7, Article ID 108933, 18 p. (2021; Zbl 07307004) Full Text: DOI
Oliveira de Silva, Diogo; Quilodrán, René Global maximizers for adjoint Fourier restriction inequalities on low dimensional spheres. (English) Zbl 07306988 J. Funct. Anal. 280, No. 7, Article ID 108825, 74 p. (2021). MSC: 35A23 35B38 33C10 42B10 42B37 45C05 51M16 PDF BibTeX XML Cite \textit{D. Oliveira de Silva} and \textit{R. Quilodrán}, J. Funct. Anal. 280, No. 7, Article ID 108825, 74 p. (2021; Zbl 07306988) Full Text: DOI
Freno, Brian A.; Johnson, William A.; Zinser, Brian F.; Wilton, Donald R.; Vipiana, Francesca; Campione, Salvatore Characterization and integration of the singular test integrals in the method-of-moments implementation of the electric-field integral equation. (English) Zbl 07305307 Eng. Anal. Bound. Elem. 124, 185-193 (2021). MSC: 65 31 PDF BibTeX XML Cite \textit{B. A. Freno} et al., Eng. Anal. Bound. Elem. 124, 185--193 (2021; Zbl 07305307) Full Text: DOI
Xie, Guizhong; Li, Ke; Zhong, Yudong; Li, Hao; Hao, Bing; Du, Wenliao; Sun, Chunya; Wang, Haoqi; Wen, Xiaoyu; Wang, Liangwen A systematic derived sinh based method for singular and nearly singular boundary integrals. (English) Zbl 07305286 Eng. Anal. Bound. Elem. 123, 147-153 (2021). MSC: 65 74 PDF BibTeX XML Cite \textit{G. Xie} et al., Eng. Anal. Bound. Elem. 123, 147--153 (2021; Zbl 07305286) Full Text: DOI
Shiah, Y. C.; Chang, Ray-Yu; Hematiyan, M. R. Three-dimensional analysis of heat conduction in anisotropic composites with thin adhesive/interstitial media by the boundary element method. (English) Zbl 07305277 Eng. Anal. Bound. Elem. 123, 36-47 (2021). MSC: 74 65 PDF BibTeX XML Cite \textit{Y. C. Shiah} et al., Eng. Anal. Bound. Elem. 123, 36--47 (2021; Zbl 07305277) Full Text: DOI
Guo, Weichao; He, Jianxun; Wu, Huoxiong Limiting weak-type behaviors for certain classical operators in harmonic analysis. (English) Zbl 07303865 Potential Anal. 54, No. 2, 307-330 (2021). MSC: 42B20 42B25 PDF BibTeX XML Cite \textit{W. Guo} et al., Potential Anal. 54, No. 2, 307--330 (2021; Zbl 07303865) Full Text: DOI
Amenta, Alex New Riemannian manifolds with \(L^p\)-unbounded Riesz transform for \(p > 2\). (English) Zbl 07303566 Math. Z. 297, No. 1-2, 99-112 (2021). Reviewer: Vladimir Vasilyev (Belgorod) MSC: 58J35 42B20 58J65 PDF BibTeX XML Cite \textit{A. Amenta}, Math. Z. 297, No. 1--2, 99--112 (2021; Zbl 07303566) Full Text: DOI
Kokilashvili, Vakhtang; Meskhi, Alexander Boundedness of integral operators in generalized weighted grand Lebesgue spaces with non-doubling measures. (English) Zbl 07302850 Mediterr. J. Math. 18, No. 2, Paper No. 50, 16 p. (2021). MSC: 42B20 42B25 26A33 PDF BibTeX XML Cite \textit{V. Kokilashvili} and \textit{A. Meskhi}, Mediterr. J. Math. 18, No. 2, Paper No. 50, 16 p. (2021; Zbl 07302850) Full Text: DOI
Demina, Maria V. Liouvillian integrability of the generalized Duffing oscillators. (English) Zbl 07301487 Anal. Math. Phys. 11, No. 1, Paper No. 25, 18 p. (2021). Reviewer: Narahari Parhi (Bhubaneswar) MSC: 34A34 34C05 PDF BibTeX XML Cite \textit{M. V. Demina}, Anal. Math. Phys. 11, No. 1, Paper No. 25, 18 p. (2021; Zbl 07301487) Full Text: DOI
Guliyev, V. S.; Omarova, M. N.; Ragusa, M. A.; Scapellato, A. Regularity of solutions of elliptic equations in divergence form in modified local generalized Morrey spaces. (English) Zbl 07301277 Anal. Math. Phys. 11, No. 1, Paper No. 13, 20 p. (2021). MSC: 35B45 42B20 42B35 42B37 PDF BibTeX XML Cite \textit{V. S. Guliyev} et al., Anal. Math. Phys. 11, No. 1, Paper No. 13, 20 p. (2021; Zbl 07301277) Full Text: DOI
Liao, Minfeng; Li, Jinxia; Li, Bo; Li, Baode A new molecular characterization of diagonal anisotropic Musielak-Orlicz Hardy spaces. (English) Zbl 1455.42014 Bull. Sci. Math. 166, Article ID 102939, 29 p. (2021). MSC: 42B30 42B20 42B35 46E30 PDF BibTeX XML Cite \textit{M. Liao} et al., Bull. Sci. Math. 166, Article ID 102939, 29 p. (2021; Zbl 1455.42014) Full Text: DOI
Lu, Guanghui Bilinear \(\theta\)-type Calderón-Zygmund operator and its commutator on non-homogeneous weighted Morrey spaces. (English) Zbl 07299286 Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 115, No. 1, Paper No. 16, 14 p. (2021). Reviewer: Haixia Yu (Beijing) MSC: 42B20 42B35 47G30 PDF BibTeX XML Cite \textit{G. Lu}, Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 115, No. 1, Paper No. 16, 14 p. (2021; Zbl 07299286) Full Text: DOI
Durcik, Polona; Roos, Joris Averages of simplex Hilbert transforms. (English) Zbl 1455.42008 Proc. Am. Math. Soc. 149, No. 2, 633-647 (2021). MSC: 42B20 42B15 PDF BibTeX XML Cite \textit{P. Durcik} and \textit{J. Roos}, Proc. Am. Math. Soc. 149, No. 2, 633--647 (2021; Zbl 1455.42008) Full Text: DOI
Françoise, Jean-Pierre; He, Hongjin; Xiao, Dongmei The number of limit cycles bifurcating from the period annulus of quasi-homogeneous Hamiltonian systems at any order. (English) Zbl 07297752 J. Differ. Equations 276, 318-341 (2021). Reviewer: Yanqin Xiong (Nanjing) MSC: 34C07 34C05 34C23 37G15 34C08 PDF BibTeX XML Cite \textit{J.-P. Françoise} et al., J. Differ. Equations 276, 318--341 (2021; Zbl 07297752) Full Text: DOI
Shi, Minglei; Arai, Ryutaro; Nakai, Eiichi Commutators of integral operators with functions in Campanato spaces on Orlicz-Morrey spaces. (English) Zbl 1455.42021 Banach J. Math. Anal. 15, No. 1, Paper No. 22, 41 p. (2021). MSC: 42B35 46E30 42B20 42B25 PDF BibTeX XML Cite \textit{M. Shi} et al., Banach J. Math. Anal. 15, No. 1, Paper No. 22, 41 p. (2021; Zbl 1455.42021) Full Text: DOI
Liu, Jun Molecular characterizations of variable anisotropic Hardy spaces with applications to boundedness of Calderón-Zygmund operators. (English) Zbl 1455.42020 Banach J. Math. Anal. 15, No. 1, Paper No. 15, 23 p. (2021). MSC: 42B35 42B30 42B20 46E30 PDF BibTeX XML Cite \textit{J. Liu}, Banach J. Math. Anal. 15, No. 1, Paper No. 15, 23 p. (2021; Zbl 1455.42020) Full Text: DOI
Barron, Alex; Erdoğan, M. Burak; Harris, Terence L. J. Fourier decay of fractal measures on hyperboloids. (English) Zbl 1455.42023 Trans. Am. Math. Soc. 374, No. 2, 1041-1075 (2021). MSC: 42B37 42B20 28A75 60A10 PDF BibTeX XML Cite \textit{A. Barron} et al., Trans. Am. Math. Soc. 374, No. 2, 1041--1075 (2021; Zbl 1455.42023) Full Text: DOI
Liu, Naijia; Song, Liang; Yu, Haixia \(L^p\) bounds of maximal operators along variable planar curves in the Lipschitz regularity. (English) Zbl 07290157 J. Funct. Anal. 280, No. 5, Article ID 108888, 41 p. (2021). MSC: 42B20 42B25 PDF BibTeX XML Cite \textit{N. Liu} et al., J. Funct. Anal. 280, No. 5, Article ID 108888, 41 p. (2021; Zbl 07290157) Full Text: DOI
Yu, Huan; Jiu, Quansen; Li, Dongsheng An extension of Calderón-Zygmund type singular integral. (English) Zbl 1454.42012 J. Funct. Anal. 280, No. 5, Article ID 108887, 23 p. (2021). MSC: 42B20 42B37 35Q35 PDF BibTeX XML Cite \textit{H. Yu} et al., J. Funct. Anal. 280, No. 5, Article ID 108887, 23 p. (2021; Zbl 1454.42012) Full Text: DOI
Greenblatt, Michael Smooth and singular maximal averages over 2D hypersurfaces and associated Radon transforms. (English) Zbl 1454.42009 Adv. Math. 377, Article ID 107465, 46 p. (2021). MSC: 42B20 42B25 44A12 PDF BibTeX XML Cite \textit{M. Greenblatt}, Adv. Math. 377, Article ID 107465, 46 p. (2021; Zbl 1454.42009) Full Text: DOI
Li, Kangwei; Martell, José María; Martikainen, Henri; Ombrosi, Sheldy; Vuorinen, Emil End-point estimates, extrapolation for multilinear Muckenhoupt classes, and applications. (English) Zbl 07288851 Trans. Am. Math. Soc. 374, No. 1, 97-135 (2021). MSC: 42B20 42B25 42B35 PDF BibTeX XML Cite \textit{K. Li} et al., Trans. Am. Math. Soc. 374, No. 1, 97--135 (2021; Zbl 07288851) Full Text: DOI
Kakaroumpas, S.; Treil, S. “Small step“ remodeling and counterexamples for weighted estimates with arbitrarily “smooth” weights. (English) Zbl 1453.42011 Adv. Math. 376, Article ID 107450, 53 p. (2021). MSC: 42B20 46B42 PDF BibTeX XML Cite \textit{S. Kakaroumpas} and \textit{S. Treil}, Adv. Math. 376, Article ID 107450, 53 p. (2021; Zbl 1453.42011) Full Text: DOI
Junge, Marius; Mei, Tao; Parcet, Javier; Xia, Runlian Algebraic Calderón-Zygmund theory. (English) Zbl 07282545 Adv. Math. 376, Article ID 107443, 73 p. (2021). MSC: 46L52 42B20 46L51 46L10 46L53 30L99 PDF BibTeX XML Cite \textit{M. Junge} et al., Adv. Math. 376, Article ID 107443, 73 p. (2021; Zbl 07282545) Full Text: DOI
Chen, Peng; Duong, Xuan Thinh; Li, Ji; Song, Liang; Yan, Lixin BMO spaces associated to operators with generalised Poisson bounds on non-doubling manifolds with ends. (English) Zbl 1451.42031 J. Differ. Equations 270, 114-184 (2021). MSC: 42B35 42B30 42B20 35K08 46E15 PDF BibTeX XML Cite \textit{P. Chen} et al., J. Differ. Equations 270, 114--184 (2021; Zbl 1451.42031) Full Text: DOI
Gu, Longfei; Liu, Yuanyuan The approximate solution of Riemann type problems for Dirac equations by Newton embedding method. (English) Zbl 07331930 J. Appl. Anal. Comput. 10, No. 1, 326-334 (2020). MSC: 30G35 34B15 11F85 32A55 PDF BibTeX XML Cite \textit{L. Gu} and \textit{Y. Liu}, J. Appl. Anal. Comput. 10, No. 1, 326--334 (2020; Zbl 07331930) Full Text: DOI
Tan, Jian Off-diagonal extrapolation on mixed variable Lebesgue spaces and its applications to strong fractional maximal operators. (English) Zbl 07331834 Georgian Math. J. 27, No. 4, 637-647 (2020). MSC: 42B25 42B35 42B20 46E35 PDF BibTeX XML Cite \textit{J. Tan}, Georgian Math. J. 27, No. 4, 637--647 (2020; Zbl 07331834) Full Text: DOI
Kokilashvili, Vakhtang Weighted grand mixed-norm Lebesgue spaces and boundedness criteria for integral operators. (English) Zbl 07331828 Georgian Math. J. 27, No. 4, 577-583 (2020). MSC: 46E30 42B25 42B35 47G10 PDF BibTeX XML Cite \textit{V. Kokilashvili}, Georgian Math. J. 27, No. 4, 577--583 (2020; Zbl 07331828) Full Text: DOI
Chen, Yanping; Ding, Yong; Zhu, Kai \(L^2\) boundedness for commutators of fractional differential type Marcinkiewicz integral with rough variable kernel and BMO Sobolev spaces. (English) Zbl 07331824 Georgian Math. J. 27, No. 4, 529-540 (2020). MSC: 42B20 42B25 46E35 PDF BibTeX XML Cite \textit{Y. Chen} et al., Georgian Math. J. 27, No. 4, 529--540 (2020; Zbl 07331824) Full Text: DOI
Ruzhansky, Michael; Torebek, Berikbol T. Multidimensional van der Corput-type estimates involving Mittag-Leffler functions. (English) Zbl 07329880 Fract. Calc. Appl. Anal. 23, No. 6, 1663-1677 (2020). MSC: 42B20 26D10 33E12 PDF BibTeX XML Cite \textit{M. Ruzhansky} and \textit{B. T. Torebek}, Fract. Calc. Appl. Anal. 23, No. 6, 1663--1677 (2020; Zbl 07329880) Full Text: DOI
Lu, Guanghui Commutators of bilinear pseudo-differential operators on local Hardy spaces with variable exponents. (English) Zbl 07328897 Bull. Braz. Math. Soc. (N.S.) 51, No. 4, 975-1000 (2020). MSC: 42B20 42B35 47G30 PDF BibTeX XML Cite \textit{G. Lu}, Bull. Braz. Math. Soc. (N.S.) 51, No. 4, 975--1000 (2020; Zbl 07328897) Full Text: DOI
Krause, Ben; Lacey, Michael T. Sparse bounds for maximally truncated oscillatory singular integrals. (English) Zbl 07328838 Ann. Sc. Norm. Super. Pisa, Cl. Sci. (5) 20, No. 2, 415-435 (2020). MSC: 42B20 PDF BibTeX XML Cite \textit{B. Krause} and \textit{M. T. Lacey}, Ann. Sc. Norm. Super. Pisa, Cl. Sci. (5) 20, No. 2, 415--435 (2020; Zbl 07328838) Full Text: DOI
Loosveldt, Laurent; Nicolay, Samuel Generalized \(T^p_u\) spaces: on the trail of Calderón and Zygmund. (English) Zbl 07328585 Diss. Math. 554, 1-64 (2020). MSC: 42B20 35J30 46E35 PDF BibTeX XML Cite \textit{L. Loosveldt} and \textit{S. Nicolay}, Diss. Math. 554, 1--64 (2020; Zbl 07328585) Full Text: DOI
Wu, Di; Shi, Zuoshunhua; Nie, Xudong; Yan, Dunyan On a \(k\)-fold beta integral formula. (English) Zbl 07327628 J. Geom. Anal. 30, No. 4, 4240-4267 (2020). MSC: 42B20 42B35 33B15 PDF BibTeX XML Cite \textit{D. Wu} et al., J. Geom. Anal. 30, No. 4, 4240--4267 (2020; Zbl 07327628) Full Text: DOI
Guo, Weichao; Lian, Jiali; Wu, Huoxiong The unified theory for the necessity of bounded commutators and applications. (English) Zbl 07327617 J. Geom. Anal. 30, No. 4, 3995-4035 (2020). MSC: 42B20 42B25 PDF BibTeX XML Cite \textit{W. Guo} et al., J. Geom. Anal. 30, No. 4, 3995--4035 (2020; Zbl 07327617) Full Text: DOI
Chen, Huyuan; Quaas, Alexander; Zhou, Feng Solutions of nonhomogeneous equations involving Hardy potentials with singularities on the boundary. (English) Zbl 07326978 Pure Appl. Funct. Anal. 5, No. 4, 899-924 (2020). MSC: 35A23 35B51 35J75 PDF BibTeX XML Cite \textit{H. Chen} et al., Pure Appl. Funct. Anal. 5, No. 4, 899--924 (2020; Zbl 07326978) Full Text: Link
Ho, Kwok-Pun Sublinear operators on mixed-norm Hardy spaces with variable exponents. (English) Zbl 07326802 Atti Accad. Naz. Lincei, Cl. Sci. Fis. Mat. Nat., IX. Ser., Rend. Lincei, Mat. Appl. 31, No. 3, 481-502 (2020). MSC: 42B35 42B30 42B20 46E30 PDF BibTeX XML Cite \textit{K.-P. Ho}, Atti Accad. Naz. Lincei, Cl. Sci. Fis. Mat. Nat., IX. Ser., Rend. Lincei, Mat. Appl. 31, No. 3, 481--502 (2020; Zbl 07326802) Full Text: DOI
Duong, Dao Van; Dung, Kieu Huu; Nguyen Minh Chuong Vector valued maximal Carleson type operators on the weighted Lorentz spaces. (English) Zbl 07326798 Z. Anal. Anwend. 39, No. 4, 433-460 (2020). MSC: 42B20 42B25 42B99 PDF BibTeX XML Cite \textit{D. Van Duong} et al., Z. Anal. Anwend. 39, No. 4, 433--460 (2020; Zbl 07326798) Full Text: DOI
Aykol, Canay; Hasanov, Javanshir J. On the boundedness of \(B\)-maximal commutators, commutators of \(B\)-Riesz potentials and \(B\)-singular integral operators in modified \(B\)-Morrey spaces. (English) Zbl 07326503 Acta Sci. Math. 86, No. 3-4, 521-547 (2020). MSC: 42B20 42B25 42B35 PDF BibTeX XML Cite \textit{C. Aykol} and \textit{J. J. Hasanov}, Acta Sci. Math. 86, No. 3--4, 521--547 (2020; Zbl 07326503) Full Text: DOI
Wang, Hua Morrey spaces related to Schrödinger operators with certain nonnegative potentials and Littlewood-Paley-Stein functions on the Heisenberg groups. (English) Zbl 07326492 Stud. Sci. Math. Hung. 57, No. 4, 465-507 (2020). MSC: 42B20 35J10 22E25 22E30 PDF BibTeX XML Cite \textit{H. Wang}, Stud. Sci. Math. Hung. 57, No. 4, 465--507 (2020; Zbl 07326492) Full Text: DOI
Bhairat, Sandeep P. New approach to existence of solution for weighted Cauchy-type problem. (English) Zbl 07326399 J. Math. Model. 8, No. 4, 377-391 (2020). MSC: 26A33 26D10 34A08 40A30 PDF BibTeX XML Cite \textit{S. P. Bhairat}, J. Math. Model. 8, No. 4, 377--391 (2020; Zbl 07326399) Full Text: DOI
Razaghzadeh, Nargess; Mohseni Moghadam, Mahmoud; Saeedi, Habibollah A spectral Chelyshkov wavelet method to solve systems of nonlinear weakly singular Volterra integral equations. (English) Zbl 07323359 J. Mahani Math. Res. Cent. 9, No. 1, 23-43 (2020). MSC: 45Exx 26A33 45Gxx 45Fxx PDF BibTeX XML Cite \textit{N. Razaghzadeh} et al., J. Mahani Math. Res. Cent. 9, No. 1, 23--43 (2020; Zbl 07323359) Full Text: DOI
Harjule, Priyanka; Bansal, Manish Kumar Fractional order models for viscoelasticity in lung tissues with power, exponential and Mittag-Leffler memories. (English) Zbl 07322743 Int. J. Appl. Comput. Math. 6, No. 4, Paper No. 119, 10 p. (2020). MSC: 92C10 26A33 PDF BibTeX XML Cite \textit{P. Harjule} and \textit{M. K. Bansal}, Int. J. Appl. Comput. Math. 6, No. 4, Paper No. 119, 10 p. (2020; Zbl 07322743) Full Text: DOI
Allahverdiev, Bilender P.; Tuna, Hüseyin Spectral expansion for singular conformable fractional Dirac systems. (English) Zbl 07321735 Rend. Circ. Mat. Palermo (2) 69, No. 3, 1359-1372 (2020). MSC: 34A08 26A33 34L10 34L40 34B40 47A10 PDF BibTeX XML Cite \textit{B. P. Allahverdiev} and \textit{H. Tuna}, Rend. Circ. Mat. Palermo (2) 69, No. 3, 1359--1372 (2020; Zbl 07321735) Full Text: DOI
Lai, Xudong Multilinear estimates for Calderón commutators. (English) Zbl 07319813 Int. Math. Res. Not. 2020, No. 20, 7097-7138 (2020). MSC: 42B20 42B25 47B47 PDF BibTeX XML Cite \textit{X. Lai}, Int. Math. Res. Not. 2020, No. 20, 7097--7138 (2020; Zbl 07319813) Full Text: DOI
Eremenko, A. E. Entire functions, PT-symmetry and Voros’s quantization scheme. (English) Zbl 1454.34003 Mat. Stud. 54, No. 2, 203-210 (2020). MSC: 34A05 34M60 81Q05 PDF BibTeX XML Cite \textit{A. E. Eremenko}, Mat. Stud. 54, No. 2, 203--210 (2020; Zbl 1454.34003) Full Text: DOI
Greenblatt, Michael Smoothing theorems for Radon transforms over hypersurfaces and related operators. (English) Zbl 07318581 Forum Math. 32, No. 6, 1637-1647 (2020). MSC: 42B35 42B20 42A85 44A12 46E35 PDF BibTeX XML Cite \textit{M. Greenblatt}, Forum Math. 32, No. 6, 1637--1647 (2020; Zbl 07318581) Full Text: DOI
Wen, Yongming; Guo, Weichao; Wu, Huoxiong Variation and oscillation inequalities for commutators in two-weight setting. (English) Zbl 07318572 Forum Math. 32, No. 6, 1459-1475 (2020). MSC: 42B20 42B25 PDF BibTeX XML Cite \textit{Y. Wen} et al., Forum Math. 32, No. 6, 1459--1475 (2020; Zbl 07318572) Full Text: DOI
Wang, Guangqing; Chen, Wenyi \(L^p\)-estimates for rough bi-parameter Fourier integral operators. (English) Zbl 07318571 Forum Math. 32, No. 6, 1441-1457 (2020). MSC: 42B20 42B10 42B37 PDF BibTeX XML Cite \textit{G. Wang} and \textit{W. Chen}, Forum Math. 32, No. 6, 1441--1457 (2020; Zbl 07318571) Full Text: DOI
Chen, Wei; Lacey, Michael T. Two weight inequalities for positive operators: doubling cubes. (English) Zbl 07318515 Rev. Mat. Iberoam. 36, No. 7, 2209-2216 (2020). MSC: 42B25 42B20 PDF BibTeX XML Cite \textit{W. Chen} and \textit{M. T. Lacey}, Rev. Mat. Iberoam. 36, No. 7, 2209--2216 (2020; Zbl 07318515) Full Text: DOI