Boletim da Sociedade Paranaense de Matemática. 3ş Série. Vol.38, 2, Maringá. 2020.

ISSN-0037-8712 (PRINT) - ISSN-2175-1188 (ONLINE)

 

Research Articles 

 

A New Generalization of Confluent Hypergeometric Function and Whittaker Function.

N. U. Khan, T. Usman and M. Ghayasuddin

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9

Smarandache Curves for Spherical Indicatrix of the Bertrand Curves Pair.

Süleyman Senyurt, Yasin Altun and Ceyda Cevahir

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27

One Sided Generalized $(\sigma,\tau)$-derivations on Rings.

Evrim Guven

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41

On Fully-Convex Harmonic Functions and their Extension.


Shahpour Nosrati and Ahmad Zireh

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51

Convergence of Approximate Solution of Mixed Hammerstein Type Integral Equations.

M. Nosrati Sahlan

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61

R-prime Numbers of Degree k.

Abdelhakim Chillali

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75

 

Convergence of a Series Leading to an Analogue of Ramanujan's Assertion on Squarefree Inetegers.

G. Sudhaamsh Mohan Reddy, S. Srinivas Rau and B. Uma

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83

Regular Classes Involving a Generalized Shift Plus Fractional Hornich Integral Operator.

Rabha W. Ibrahim

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89

Existence of Solution of Urysohn Integral Equation Through Generalized Contractive Mapping.

O. P. Chauhan, D. Singh, V. Joshi, M. S. Rathore

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101

New Characterization of $\mathcal{D-}$ Focal Curves in Minkowski 3-space.

Talat Körpinar, Selcuk Basr and Vedat Asil

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115

On Euler Type Integrals Involving Extended Mittag-Leffler Functions.

E. Mittal, S. Joshi, R. M. Pandey

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125

Invariants of First Order Partial Differential Equations.

Lizandro Sanchez Challapa

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135

Almost Semicontinuous Multifunctions via Ideals.

R. Saritha and N. Rajesh

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149

On a Nonlinear System Arising in a Theory of Thermal Explosion.

S. H. Rasoul

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169

Existence of Three Solutions to the Discrete Fourth-order Boundary Value Problem with Four Parameters.

M. Ousbika and Z. El Allali

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177