Estaremi, Y. On a class of bounded operators and their ascent and descent. (English) Zbl 1515.47050 Rend. Circ. Mat. Palermo (2) 69, No. 3, 1393-1399 (2020). MSC: 47B38 46E30 47A05 PDFBibTeX XMLCite \textit{Y. Estaremi}, Rend. Circ. Mat. Palermo (2) 69, No. 3, 1393--1399 (2020; Zbl 1515.47050) Full Text: DOI
Akdim, Youssef; Belayachi, Mohammed; Hjiaj, Hassane; Mekkour, Mounir Entropy solutions for some nonlinear and noncoercive unilateral elliptic problems. (English) Zbl 1464.35108 Rend. Circ. Mat. Palermo (2) 69, No. 3, 1373-1392 (2020). Reviewer: Said El Manouni (Berlin) MSC: 35J60 35J86 46E30 46E35 PDFBibTeX XMLCite \textit{Y. Akdim} et al., Rend. Circ. Mat. Palermo (2) 69, No. 3, 1373--1392 (2020; Zbl 1464.35108) Full Text: DOI
Allahverdiev, Bilender P.; Tuna, Hüseyin Spectral expansion for singular conformable fractional Dirac systems. (English) Zbl 1464.34111 Rend. Circ. Mat. Palermo (2) 69, No. 3, 1359-1372 (2020). MSC: 34L40 34A08 26A33 34L10 34B40 47A10 PDFBibTeX XMLCite \textit{B. P. Allahverdiev} and \textit{H. Tuna}, Rend. Circ. Mat. Palermo (2) 69, No. 3, 1359--1372 (2020; Zbl 1464.34111) Full Text: DOI
Prasad, Gopi; Dimri, Ramesh Chandra; Bartwal, Ayush Fixed points of Suzuki contractive mappings in relational metric spaces. (English) Zbl 1510.54041 Rend. Circ. Mat. Palermo (2) 69, No. 3, 1347-1358 (2020). MSC: 54H25 54E40 PDFBibTeX XMLCite \textit{G. Prasad} et al., Rend. Circ. Mat. Palermo (2) 69, No. 3, 1347--1358 (2020; Zbl 1510.54041) Full Text: DOI
Balooee, Javad; Cho, Yeol Je General regularized nonconvex mixed equilibrium problems: iterative methods by auxiliary principle technique. (English) Zbl 1515.47082 Rend. Circ. Mat. Palermo (2) 69, No. 3, 1321-1346 (2020). MSC: 47J25 47H05 49J40 65K10 65K15 PDFBibTeX XMLCite \textit{J. Balooee} and \textit{Y. J. Cho}, Rend. Circ. Mat. Palermo (2) 69, No. 3, 1321--1346 (2020; Zbl 1515.47082) Full Text: DOI
Kumar, Devendra; Dey, Sanku; Ormoz, Ehsan; MirMostafaee, S. M. T. K. Inference for the unit-Gompertz model based on record values and inter-record times with an application. (English) Zbl 1461.62057 Rend. Circ. Mat. Palermo (2) 69, No. 3, 1295-1319 (2020). MSC: 62G32 62F10 62F15 62F25 PDFBibTeX XMLCite \textit{D. Kumar} et al., Rend. Circ. Mat. Palermo (2) 69, No. 3, 1295--1319 (2020; Zbl 1461.62057) Full Text: DOI
Prajapati, Balchand; Gupta, Charu Composition and orthogonality of derivations with multilinear polynomials in prime rings. (English) Zbl 1469.16079 Rend. Circ. Mat. Palermo (2) 69, No. 3, 1279-1294 (2020). MSC: 16W25 16N60 PDFBibTeX XMLCite \textit{B. Prajapati} and \textit{C. Gupta}, Rend. Circ. Mat. Palermo (2) 69, No. 3, 1279--1294 (2020; Zbl 1469.16079) Full Text: DOI
Azroul, Elhoussine; Balaadich, Farah Young measure theory for unsteady problems in Orlicz-Sobolev spaces. (English) Zbl 1459.35253 Rend. Circ. Mat. Palermo (2) 69, No. 3, 1265-1278 (2020). MSC: 35K59 35K51 35D30 46E30 PDFBibTeX XMLCite \textit{E. Azroul} and \textit{F. Balaadich}, Rend. Circ. Mat. Palermo (2) 69, No. 3, 1265--1278 (2020; Zbl 1459.35253) Full Text: DOI
Abel, Mati; Pérez-Tiscareño, Reyna María The three space problem for locally pseudoconvex algebras. (English) Zbl 1471.46046 Rend. Circ. Mat. Palermo (2) 69, No. 3, 1259-1264 (2020). Reviewer: Wiesław Tadeusz Żelazko (Warszawa) MSC: 46H20 PDFBibTeX XMLCite \textit{M. Abel} and \textit{R. M. Pérez-Tiscareño}, Rend. Circ. Mat. Palermo (2) 69, No. 3, 1259--1264 (2020; Zbl 1471.46046) Full Text: DOI
Paykan, Kamal Further results on skew Hurwitz series ring. I. (English) Zbl 1467.16030 Rend. Circ. Mat. Palermo (2) 69, No. 3, 1251-1258 (2020). Reviewer: Ali Benhissi (Monastir) MSC: 16S99 16W60 16S36 16N40 PDFBibTeX XMLCite \textit{K. Paykan}, Rend. Circ. Mat. Palermo (2) 69, No. 3, 1251--1258 (2020; Zbl 1467.16030) Full Text: DOI
Bachir, A.; Prasad, T. Fuglede-Putnam theorem for \((\alpha,\beta)\)-normal operators. (English) Zbl 1515.47028 Rend. Circ. Mat. Palermo (2) 69, No. 3, 1243-1249 (2020). MSC: 47B20 47A10 47B47 PDFBibTeX XMLCite \textit{A. Bachir} and \textit{T. Prasad}, Rend. Circ. Mat. Palermo (2) 69, No. 3, 1243--1249 (2020; Zbl 1515.47028) Full Text: DOI
Khan, Mohammad Saeed; Singh, Yumnam Mahendra; Abbas, Mujahid; Rakočević, Vladimir On non-unique fixed point of Ćirić type operators in extended \(b\)-metric spaces and applications. (English) Zbl 1510.54032 Rend. Circ. Mat. Palermo (2) 69, No. 3, 1221-1241 (2020). MSC: 54H25 54E40 45B05 PDFBibTeX XMLCite \textit{M. S. Khan} et al., Rend. Circ. Mat. Palermo (2) 69, No. 3, 1221--1241 (2020; Zbl 1510.54032) Full Text: DOI
Panja, Prabir Prey-predator-scavenger model with Monod-Haldane type functional response. (English) Zbl 1459.92012 Rend. Circ. Mat. Palermo (2) 69, No. 3, 1205-1219 (2020). MSC: 92B25 34D23 34C23 PDFBibTeX XMLCite \textit{P. Panja}, Rend. Circ. Mat. Palermo (2) 69, No. 3, 1205--1219 (2020; Zbl 1459.92012) Full Text: DOI
Mitrović, Zoran D.; Aydi, Hassen; Kadelburg, Zoran; Soleimani Rad, Ghasem On some rational contractions in \(\mathbf{b_v(s)}\)-metric spaces. (English) Zbl 1510.54038 Rend. Circ. Mat. Palermo (2) 69, No. 3, 1193-1203 (2020). MSC: 54H25 54E40 PDFBibTeX XMLCite \textit{Z. D. Mitrović} et al., Rend. Circ. Mat. Palermo (2) 69, No. 3, 1193--1203 (2020; Zbl 1510.54038) Full Text: DOI
Dolgachev, Igor; Shimada, Ichiro 15-nodal quartic surfaces. II: The automorphism group. (English) Zbl 1467.14103 Rend. Circ. Mat. Palermo (2) 69, No. 3, 1165-1191 (2020). Reviewer: Francesca Cioffi (Napoli) MSC: 14J50 14Q10 20F55 PDFBibTeX XMLCite \textit{I. Dolgachev} and \textit{I. Shimada}, Rend. Circ. Mat. Palermo (2) 69, No. 3, 1165--1191 (2020; Zbl 1467.14103) Full Text: DOI
Ghenciu, Ioana On some classes of Dunford-Pettis-like operators. (English) Zbl 1515.47027 Rend. Circ. Mat. Palermo (2) 69, No. 3, 1149-1163 (2020). MSC: 47B07 46B25 46B28 PDFBibTeX XMLCite \textit{I. Ghenciu}, Rend. Circ. Mat. Palermo (2) 69, No. 3, 1149--1163 (2020; Zbl 1515.47027) Full Text: DOI
Kankam, Kunrada; Srinak, Pittaya; Cholamjiak, Prasit; Pholasa, Nattawut Solving the multiple-set split feasibility problem and the equilibrium problem by a new relaxed CQ algorithm. (English) Zbl 1461.65163 Rend. Circ. Mat. Palermo (2) 69, No. 3, 1131-1148 (2020). MSC: 65K05 90C25 47J25 PDFBibTeX XMLCite \textit{K. Kankam} et al., Rend. Circ. Mat. Palermo (2) 69, No. 3, 1131--1148 (2020; Zbl 1461.65163) Full Text: DOI
Cufí, Julià; Gallego, Eduardo; Reventós, Agustí Integral geometry about the visual angle of a convex set. (English) Zbl 1459.52005 Rend. Circ. Mat. Palermo (2) 69, No. 3, 1115-1130 (2020). MSC: 52A22 53A04 PDFBibTeX XMLCite \textit{J. Cufí} et al., Rend. Circ. Mat. Palermo (2) 69, No. 3, 1115--1130 (2020; Zbl 1459.52005) Full Text: DOI arXiv
Argyros, Ioannis K.; George, Santhosh; Erappa, Shobha M. Extending the applicability of high-order iterative schemes under Kantorovich hypotheses and restricted convergence regions. (English) Zbl 1461.65100 Rend. Circ. Mat. Palermo (2) 69, No. 3, 1107-1113 (2020). MSC: 65J15 49M15 PDFBibTeX XMLCite \textit{I. K. Argyros} et al., Rend. Circ. Mat. Palermo (2) 69, No. 3, 1107--1113 (2020; Zbl 1461.65100) Full Text: DOI
Merzoug, I.; Guezane-Lakoud, A.; Khaldi, R. Existence of solutions for a nonlinear fractional \(p\)-Laplacian boundary value problem. (English) Zbl 1465.34033 Rend. Circ. Mat. Palermo (2) 69, No. 3, 1099-1106 (2020). Reviewer: Krishnan Balachandran (Coimbatore) MSC: 34B15 34A08 26A33 47N20 PDFBibTeX XMLCite \textit{I. Merzoug} et al., Rend. Circ. Mat. Palermo (2) 69, No. 3, 1099--1106 (2020; Zbl 1465.34033) Full Text: DOI
Bahmani, M. A.; Ghomanjani, F. Characterizing centralizer maps and Jordan centralizer maps through zero products. (English) Zbl 1515.47053 Rend. Circ. Mat. Palermo (2) 69, No. 3, 1093-1097 (2020). MSC: 47B47 15A86 47A07 47B49 PDFBibTeX XMLCite \textit{M. A. Bahmani} and \textit{F. Ghomanjani}, Rend. Circ. Mat. Palermo (2) 69, No. 3, 1093--1097 (2020; Zbl 1515.47053) Full Text: DOI
Di Gennaro, Vincenzo A remark on the genus of curves in \(\mathbf{P}^4\). (English) Zbl 1461.14071 Rend. Circ. Mat. Palermo (2) 69, No. 3, 1079-1091 (2020). Reviewer: Luca Chiantini (Siena) MSC: 14N05 14H45 PDFBibTeX XMLCite \textit{V. Di Gennaro}, Rend. Circ. Mat. Palermo (2) 69, No. 3, 1079--1091 (2020; Zbl 1461.14071) Full Text: DOI arXiv
Talamini, Vittorino Generating formulas for finite reflection groups of the infinite series \(S_n\), \(A_n\), \(B_n\) and \(D_n\). (English) Zbl 1470.20016 Rend. Circ. Mat. Palermo (2) 69, No. 3, 1043-1077 (2020). MSC: 20F55 13A50 51F15 20H15 PDFBibTeX XMLCite \textit{V. Talamini}, Rend. Circ. Mat. Palermo (2) 69, No. 3, 1043--1077 (2020; Zbl 1470.20016) Full Text: DOI arXiv
Benbouziane, H.; Bouramdane, Y.; El Kettani, M. Ech-Chérif Maps preserving local spectral subspaces of generalised product of operators. (English) Zbl 1515.47006 Rend. Circ. Mat. Palermo (2) 69, No. 3, 1033-1042 (2020). Reviewer: Abdellatif Bourhim (Syracuse) MSC: 47A11 47A15 47B48 PDFBibTeX XMLCite \textit{H. Benbouziane} et al., Rend. Circ. Mat. Palermo (2) 69, No. 3, 1033--1042 (2020; Zbl 1515.47006) Full Text: DOI
Neggal, Bilel; Boukerrioua, Khaled; Kilani, Brahim; Meziri, Imen \(h\)-stability for nonlinear abstract dynamic equations on time scales and applications. (English) Zbl 1464.34114 Rend. Circ. Mat. Palermo (2) 69, No. 3, 1017-1031 (2020). MSC: 34N05 34G20 34D20 PDFBibTeX XMLCite \textit{B. Neggal} et al., Rend. Circ. Mat. Palermo (2) 69, No. 3, 1017--1031 (2020; Zbl 1464.34114) Full Text: DOI
Azroul, Elhoussine; Balaadich, Farah Existence of solutions for generalized \(p(x)\)-Laplacian systems. (English) Zbl 1460.35126 Rend. Circ. Mat. Palermo (2) 69, No. 3, 1005-1015 (2020). MSC: 35J57 35J92 35A01 PDFBibTeX XMLCite \textit{E. Azroul} and \textit{F. Balaadich}, Rend. Circ. Mat. Palermo (2) 69, No. 3, 1005--1015 (2020; Zbl 1460.35126) Full Text: DOI
Gupta, Vijay Estimate for the difference of operators having different basis functions. (English) Zbl 1464.41005 Rend. Circ. Mat. Palermo (2) 69, No. 3, 995-1003 (2020). Reviewer: Ioan Raşa (Cluj-Napoca) MSC: 41A25 41A35 PDFBibTeX XMLCite \textit{V. Gupta}, Rend. Circ. Mat. Palermo (2) 69, No. 3, 995--1003 (2020; Zbl 1464.41005) Full Text: DOI
Didi, Hana; Moussaoui, Abdelkrim Multiple positive solutions for a class of quasilinear singular elliptic systems. (English) Zbl 1460.35176 Rend. Circ. Mat. Palermo (2) 69, No. 3, 977-994 (2020). MSC: 35J92 35J47 35J75 35A01 PDFBibTeX XMLCite \textit{H. Didi} and \textit{A. Moussaoui}, Rend. Circ. Mat. Palermo (2) 69, No. 3, 977--994 (2020; Zbl 1460.35176) Full Text: DOI
Rathish Kumar, B. V.; Priyadarshi, Gopal Haar wavelet method for two-dimensional parabolic inverse problem with a control parameter. (English) Zbl 1466.65107 Rend. Circ. Mat. Palermo (2) 69, No. 3, 961-976 (2020). MSC: 65M32 65T60 65M70 65M22 65D07 35K20 PDFBibTeX XMLCite \textit{B. V. Rathish Kumar} and \textit{G. Priyadarshi}, Rend. Circ. Mat. Palermo (2) 69, No. 3, 961--976 (2020; Zbl 1466.65107) Full Text: DOI
Majumder, Sujoy; Dam, Arup Some further difference results on Hayman conjecture and value-sharing. (English) Zbl 1461.30066 Rend. Circ. Mat. Palermo (2) 69, No. 3, 947-960 (2020). MSC: 30D15 30D35 39A05 PDFBibTeX XMLCite \textit{S. Majumder} and \textit{A. Dam}, Rend. Circ. Mat. Palermo (2) 69, No. 3, 947--960 (2020; Zbl 1461.30066) Full Text: DOI
Nunokawa, Mamoru; Sokół, Janusz On a successive property of strongly starlikeness for multivalent functions. (English) Zbl 1461.30044 Rend. Circ. Mat. Palermo (2) 69, No. 3, 939-945 (2020). MSC: 30C45 PDFBibTeX XMLCite \textit{M. Nunokawa} and \textit{J. Sokół}, Rend. Circ. Mat. Palermo (2) 69, No. 3, 939--945 (2020; Zbl 1461.30044) Full Text: DOI
Chaudhary, Renu Monotone iterative technique for Sobolev type fractional integro-differential equations with fractional nonlocal conditions. (English) Zbl 1466.34068 Rend. Circ. Mat. Palermo (2) 69, No. 3, 925-937 (2020). Reviewer: Miklavž Mastinšek (Maribor) MSC: 34K37 34K30 34K07 PDFBibTeX XMLCite \textit{R. Chaudhary}, Rend. Circ. Mat. Palermo (2) 69, No. 3, 925--937 (2020; Zbl 1466.34068) Full Text: DOI
Debnath, Pradip; Neog, Murchana; Radenović, Stojan Set valued Reich type \(G\)-contractions in a complete metric space with graph. (English) Zbl 1510.54028 Rend. Circ. Mat. Palermo (2) 69, No. 3, 917-924 (2020). MSC: 54H25 54C60 54E40 54E50 PDFBibTeX XMLCite \textit{P. Debnath} et al., Rend. Circ. Mat. Palermo (2) 69, No. 3, 917--924 (2020; Zbl 1510.54028) Full Text: DOI
Fernández y Fernández-Arroyo, Fidel José The Hahn-Banach theorem: a proof of the equivalence between the analytic and geometric versions. (English) Zbl 1467.46003 Rend. Circ. Mat. Palermo (2) 69, No. 3, 911-916 (2020). Reviewer: Nacib Gurgel Albuquerque (João Pessoa) MSC: 46A22 46A03 46B99 PDFBibTeX XMLCite \textit{F. J. Fernández y Fernández-Arroyo}, Rend. Circ. Mat. Palermo (2) 69, No. 3, 911--916 (2020; Zbl 1467.46003) Full Text: DOI arXiv
Nguyen Thi Kim Son; Hoang Viet Long On the semigroup approach to the interval-valued differential evolution equations. (English) Zbl 1515.47063 Rend. Circ. Mat. Palermo (2) 69, No. 3, 883-910 (2020). MSC: 47D06 28B10 54C60 58C06 PDFBibTeX XMLCite \textit{Nguyen Thi Kim Son} and \textit{Hoang Viet Long}, Rend. Circ. Mat. Palermo (2) 69, No. 3, 883--910 (2020; Zbl 1515.47063) Full Text: DOI
Aili, Mohammed; Khemmoudj, Ammar General decay of energy for a viscoelastic wave equation with a distributed delay term in the nonlinear internal dambing. (English) Zbl 1459.35032 Rend. Circ. Mat. Palermo (2) 69, No. 3, 861-881 (2020). MSC: 35B40 35L20 35L72 35R09 74D05 74F05 93D15 26A51 PDFBibTeX XMLCite \textit{M. Aili} and \textit{A. Khemmoudj}, Rend. Circ. Mat. Palermo (2) 69, No. 3, 861--881 (2020; Zbl 1459.35032) Full Text: DOI
Avallone, Anna; Vitolo, Paolo Lyapunov decomposition in \(\mathrm{d}_{0}\)-algebras. (English) Zbl 1472.06026 Rend. Circ. Mat. Palermo (2) 69, No. 3, 837-859 (2020). Reviewer: Wiesław A. Dudek (Wrocław) MSC: 06F35 03G25 28A12 06A12 PDFBibTeX XMLCite \textit{A. Avallone} and \textit{P. Vitolo}, Rend. Circ. Mat. Palermo (2) 69, No. 3, 837--859 (2020; Zbl 1472.06026) Full Text: DOI
Khatir, Anes M.; Graef, John R.; Remili, Moussadek Stability, boundedness, and square integrability of solutions to third order neutral differential equations with delay. (English) Zbl 1468.34108 Rend. Circ. Mat. Palermo (2) 69, No. 3, 823-836 (2020). Reviewer: Mohamed Zitane (Meknès) MSC: 34K40 34K20 34K12 PDFBibTeX XMLCite \textit{A. M. Khatir} et al., Rend. Circ. Mat. Palermo (2) 69, No. 3, 823--836 (2020; Zbl 1468.34108) Full Text: DOI
Ellia, Ph. Quasi-complete intersections in \(\mathbb{P}^2\) and syzygies. (English) Zbl 1457.14074 Rend. Circ. Mat. Palermo (2) 69, No. 3, 813-822 (2020). MSC: 14H50 14M06 14M07 13D02 PDFBibTeX XMLCite \textit{Ph. Ellia}, Rend. Circ. Mat. Palermo (2) 69, No. 3, 813--822 (2020; Zbl 1457.14074) Full Text: DOI arXiv
Molkhasi, Ali; Shum, K. P. Strongly algebraically closed orthomodular near semirings. (English) Zbl 1464.16046 Rend. Circ. Mat. Palermo (2) 69, No. 3, 803-812 (2020). MSC: 16Y60 06E05 13L05 PDFBibTeX XMLCite \textit{A. Molkhasi} and \textit{K. P. Shum}, Rend. Circ. Mat. Palermo (2) 69, No. 3, 803--812 (2020; Zbl 1464.16046) Full Text: DOI
Yeniçerioğlu, Ali Fuat; Pinelas, Sandra; Yan, Yubin On the behavior of the solutions for linear autonomous mixed type difference equation. (English) Zbl 1459.39042 Rend. Circ. Mat. Palermo (2) 69, No. 3, 787-801 (2020). Reviewer: Eszter Gselmann (Debrecen) MSC: 39A30 39A06 39A10 PDFBibTeX XMLCite \textit{A. F. Yeniçerioğlu} et al., Rend. Circ. Mat. Palermo (2) 69, No. 3, 787--801 (2020; Zbl 1459.39042) Full Text: DOI Link
García-Saldaña, Johanna D.; Llibre, Jaume; Valls, Claudia Linear type global centers of linear systems with cubic homogeneous nonlinearities. (English) Zbl 1479.34059 Rend. Circ. Mat. Palermo (2) 69, No. 3, 771-785 (2020). Reviewer: Hang Zheng (Jinhua) MSC: 34C05 34C25 PDFBibTeX XMLCite \textit{J. D. García-Saldaña} et al., Rend. Circ. Mat. Palermo (2) 69, No. 3, 771--785 (2020; Zbl 1479.34059) Full Text: DOI Link
Hoang, Manh Tuan; Egbelowo, Oluwaseun Francis Nonstandard finite difference schemes for solving an SIS epidemic model with standard incidence. (English) Zbl 1461.65205 Rend. Circ. Mat. Palermo (2) 69, No. 3, 753-769 (2020). MSC: 65L05 65L12 65L20 37M05 PDFBibTeX XMLCite \textit{M. T. Hoang} and \textit{O. F. Egbelowo}, Rend. Circ. Mat. Palermo (2) 69, No. 3, 753--769 (2020; Zbl 1461.65205) Full Text: DOI
Zitane, Hanaa; Larhrissi, Rachid; Boutoulout, Ali Fractional output stabilization for a class of bilinear distributed systems. (English) Zbl 1459.93151 Rend. Circ. Mat. Palermo (2) 69, No. 3, 737-752 (2020). MSC: 93D15 93C15 26A33 93C10 PDFBibTeX XMLCite \textit{H. Zitane} et al., Rend. Circ. Mat. Palermo (2) 69, No. 3, 737--752 (2020; Zbl 1459.93151) Full Text: DOI
Jolaoso, L. O.; Alakoya, T. O.; Taiwo, A.; Mewomo, O. T. A parallel combination extragradient method with Armijo line searching for finding common solutions of finite families of equilibrium and fixed point problems. (English) Zbl 1461.65196 Rend. Circ. Mat. Palermo (2) 69, No. 3, 711-735 (2020). MSC: 65K15 47J25 65J15 90C33 PDFBibTeX XMLCite \textit{L. O. Jolaoso} et al., Rend. Circ. Mat. Palermo (2) 69, No. 3, 711--735 (2020; Zbl 1461.65196) Full Text: DOI
Gupta, Vijay A large family of linear positive operators. (English) Zbl 1461.30086 Rend. Circ. Mat. Palermo (2) 69, No. 3, 701-709 (2020). MSC: 30E10 41A25 41A35 PDFBibTeX XMLCite \textit{V. Gupta}, Rend. Circ. Mat. Palermo (2) 69, No. 3, 701--709 (2020; Zbl 1461.30086) Full Text: DOI
Hakima, Hassan; Jafari, S. Hadi On generalized \(2_\otimes\)-auto Engel subgroups. (English) Zbl 1498.20131 Rend. Circ. Mat. Palermo (2) 69, No. 3, 695-699 (2020). MSC: 20J05 20F45 20F28 20E22 PDFBibTeX XMLCite \textit{H. Hakima} and \textit{S. H. Jafari}, Rend. Circ. Mat. Palermo (2) 69, No. 3, 695--699 (2020; Zbl 1498.20131) Full Text: DOI