Ousbika, Mohamed; El Allali, Zakaria Existence of three solutions to the discrete fourth-order boundary value problem with four parameters. (English) Zbl 1431.35009 Bol. Soc. Parana. Mat. (3) 38, No. 2, 177-189 (2020). MSC: 35B40 35L70 PDFBibTeX XMLCite \textit{M. Ousbika} and \textit{Z. El Allali}, Bol. Soc. Parana. Mat. (3) 38, No. 2, 177--189 (2020; Zbl 1431.35009) Full Text: Link
Rasoul, S. H. On a nonlinear system arising in a theory of thermal explosion. (English) Zbl 1431.35204 Bol. Soc. Parana. Mat. (3) 38, No. 2, 169-175 (2020). MSC: 35Q79 35J65 PDFBibTeX XMLCite \textit{S. H. Rasoul}, Bol. Soc. Parana. Mat. (3) 38, No. 2, 169--175 (2020; Zbl 1431.35204) Full Text: Link
Saritha, R.; Rajesh, N. Almost semicontinuous multifunctions via ideals. (English) Zbl 1431.54006 Bol. Soc. Parana. Mat. (3) 38, No. 2, 149-167 (2020). MSC: 54C05 54C60 54C08 54C10 PDFBibTeX XMLCite \textit{R. Saritha} and \textit{N. Rajesh}, Bol. Soc. Parana. Mat. (3) 38, No. 2, 149--167 (2020; Zbl 1431.54006) Full Text: Link
Challapa, Lizandro Sanchez Invariants of first order partial differential equations. (English) Zbl 1431.34014 Bol. Soc. Parana. Mat. (3) 38, No. 2, 135-147 (2020). MSC: 34A09 34A26 58K05 PDFBibTeX XMLCite \textit{L. S. Challapa}, Bol. Soc. Parana. Mat. (3) 38, No. 2, 135--147 (2020; Zbl 1431.34014) Full Text: Link
Joshi, Sunil; Mittal, Ekta; Pandey, Rupakshi Mishra On Euler type integrals involving extended Mittag-Leffler functions. (English) Zbl 1431.35008 Bol. Soc. Parana. Mat. (3) 38, No. 2, 125-134 (2020). MSC: 35B40 35L70 PDFBibTeX XMLCite \textit{S. Joshi} et al., Bol. Soc. Parana. Mat. (3) 38, No. 2, 125--134 (2020; Zbl 1431.35008) Full Text: Link
Körpinar, Talat; Baş, Selçuk; Asil, Vedat New characterization of \(\mathcal{D}\)-focal curves in Minkowski 3-space. (English) Zbl 1431.53005 Bol. Soc. Parana. Mat. (3) 38, No. 2, 115-123 (2020). MSC: 53A04 53A10 PDFBibTeX XMLCite \textit{T. Körpinar} et al., Bol. Soc. Parana. Mat. (3) 38, No. 2, 115--123 (2020; Zbl 1431.53005) Full Text: Link
Chauhan, Om Prakash; Singh, Deepak; Joshi, Vishal; Rathore, Mahendra Singh Existence of solution of Urysohn integral equation through generalized contractive mapping. (English) Zbl 1431.54025 Bol. Soc. Parana. Mat. (3) 38, No. 2, 101-113 (2020). MSC: 54H25 54E40 54F05 45G10 PDFBibTeX XMLCite \textit{O. P. Chauhan} et al., Bol. Soc. Parana. Mat. (3) 38, No. 2, 101--113 (2020; Zbl 1431.54025) Full Text: Link
Ibrahim, Rabha W. Regular classes involving a generalized shift plus fractional Hornich integral operator. (English) Zbl 1431.30013 Bol. Soc. Parana. Mat. (3) 38, No. 2, 89-99 (2020). MSC: 30C45 PDFBibTeX XMLCite \textit{R. W. Ibrahim}, Bol. Soc. Parana. Mat. (3) 38, No. 2, 89--99 (2020; Zbl 1431.30013) Full Text: Link
Sudhaamsh Mohan Reddy, G.; Srinivas Rau, S.; Uma, B. Convergence of a series leading to an analogue of Ramanujan’s assertion on squarefree integers. (English) Zbl 1431.11107 Bol. Soc. Parana. Mat. (3) 38, No. 2, 83-87 (2020). MSC: 11M06 PDFBibTeX XMLCite \textit{G. Sudhaamsh Mohan Reddy} et al., Bol. Soc. Parana. Mat. (3) 38, No. 2, 83--87 (2020; Zbl 1431.11107) Full Text: Link
Chillali, Abdelhakim \(r\)-prime numbers of degree \(k\). (English) Zbl 1431.11137 Bol. Soc. Parana. Mat. (3) 38, No. 2, 75-82 (2020). MSC: 11T71 14G50 94A60 PDFBibTeX XMLCite \textit{A. Chillali}, Bol. Soc. Parana. Mat. (3) 38, No. 2, 75--82 (2020; Zbl 1431.11137) Full Text: Link
Sahlan, Monireh Nosrati Convergence of approximate solution of mixed Hammerstein type integral equations. (English) Zbl 1431.45004 Bol. Soc. Parana. Mat. (3) 38, No. 2, 61-74 (2020). MSC: 45G10 65L60 42C40 65Gxx PDFBibTeX XMLCite \textit{M. N. Sahlan}, Bol. Soc. Parana. Mat. (3) 38, No. 2, 61--74 (2020; Zbl 1431.45004) Full Text: Link
Nosrati, Shahpour; Zireh, Ahmad On fully-convex harmonic functions and their extension. (English) Zbl 1431.30019 Bol. Soc. Parana. Mat. (3) 38, No. 2, 51-60 (2020). MSC: 30C45 31C05 31A05 PDFBibTeX XMLCite \textit{S. Nosrati} and \textit{A. Zireh}, Bol. Soc. Parana. Mat. (3) 38, No. 2, 51--60 (2020; Zbl 1431.30019) Full Text: Link
Guven, Evrim One sided generalized \(( \sigma,\tau)\)-derivations on rings. (English) Zbl 1431.16045 Bol. Soc. Parana. Mat. (3) 38, No. 2, 41-50 (2020). MSC: 16W25 16U80 PDFBibTeX XMLCite \textit{E. Guven}, Bol. Soc. Parana. Mat. (3) 38, No. 2, 41--50 (2020; Zbl 1431.16045) Full Text: Link
Şenyurt, Süleyman; Altun, Yasin; Cevahir, Ceyda Smarandache curves for spherical indicatrix of the Bertrand curves pair. (English) Zbl 1431.53006 Bol. Soc. Parana. Mat. (3) 38, No. 2, 27-39 (2020). MSC: 53A04 PDFBibTeX XMLCite \textit{S. Şenyurt} et al., Bol. Soc. Parana. Mat. (3) 38, No. 2, 27--39 (2020; Zbl 1431.53006) Full Text: Link
Khan, N. U.; Usman, T.; Ghayasuddin, M. A new generalization of confluent hypergeometric function and Whittaker function. (English) Zbl 1431.33003 Bol. Soc. Parana. Mat. (3) 38, No. 2, 9-26 (2020). MSC: 33B15 33C05 33C15 PDFBibTeX XMLCite \textit{N. U. Khan} et al., Bol. Soc. Parana. Mat. (3) 38, No. 2, 9--26 (2020; Zbl 1431.33003) Full Text: Link