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JMB Journal of Microbiolog and Biotechnology

OPEN ACCESS eISSN 0454-8124
pISSN 1225-6951
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Article
31 March 2021

Blow-up of Solutions for Higher-order Nonlinear Kirchhofftype Equation with Degenerate Damping and Source

Yong Han Kang∗, Jong-Yeoul Park

Kyungpook Mathematical Journal 2021; 61: 1-10

This paper is concerned the finite time blow-up of solution for higher-order nonlinear Kirchhoff-type equation with a degenerate term and a source term. By an appropriate Lyapunov inequality, we prove the finite time blow-up of solution for equation ...
Key Words:

Kirchoff-type equation, blow up, higher-order nonlinear, degenerate damping and source

Article
31 March 2021

Structures Related to Right Duo Factor Rings

Hongying Chen, Yang Lee, Zhelin Piao∗

Kyungpook Mathematical Journal 2021; 61: 11-21

We study the structure of rings whose factor rings modulo nonzero proper ideals are right duo; such rings are called right FD. We first see that this new ring property is not left-right symmetric. We prove for a non-prime right FD ring R
Key Words:

right FD ring, right duo ring, division ring, commutative ring, simple ring, non-prime right FD ring, matrix ring, polynomial ring, subring, idempotent

Article
31 March 2021

Two Extensions of a Star Operation on D to the Polynomial Ring D[X]

Gyu Whan Chang, Hwankoo Kim*

Kyungpook Mathematical Journal 2021; 61: 23-32

Let D be an integral domain with quotient field K, X an indeterminate over D, * a star operation on D, and C
Key Words:

star operation, extension of a star operation to the polynomial ring, t-class group, integrally closed, *-Noetherian domain.

Article
31 March 2021

OnWeakly Prime andWeakly 2-absorbing Modules over Non-commutative Rings

Nico J. Groenewald

Kyungpook Mathematical Journal 2021; 61: 33-48

Most of the research on weakly prime and weakly 2-absorbing modules is for modules over commutative rings. Only scatterd results about these notions with regard to non-commutative rings are available. The motivation of this paper is to show that many...
Key Words:

2-absorbing submodule, weakly 2-absorbing submodule, prime submodule, weakly prime submodule, weakly prime radical.

Article
31 March 2021

Some Congruences for Andrews' Partition Function EO¯(n)

Utpal Pore and Syeda Noor Fathima

Kyungpook Mathematical Journal 2021; 61: 49-59

Recently, Andrews introduced partition functionsEO(n
Key Words:

partitions, partitions with even parts below odd parts, congruences.

Article
31 March 2021

Distance Eccentric Connectivity Index of Graphs

Akram Alqesmah, Anwar Saleh, R. Rangarajan et al.

Kyungpook Mathematical Journal 2021; 61: 61-74

Let G=(V,E)
Key Words:

eccentric connectivity index, distance eccentric connectivity index, topological graph index, graph operation.

Article
31 March 2021

Univalent Functions Associated with the Symmetric Points and Cardioid-shaped Domain Involving (p,q)-calculus

Om Ahuja, Nisha Bohra, Asena Çetinkaya et al.

Kyungpook Mathematical Journal 2021; 61: 75-98

In this paper, we introduce new classes of post-quantum or (p,q)-starlike and convex functions with respect to symmetric points associated with a cardiod-shaped domain. We obtain (p,q)-Fekete-Szegö inequalities for functions in ...
Key Words:

(p, q)-Fekete-Szegö inequalities, (p,q)-starlike functions, (p,q)-convex functions, (p,q)-logarithmic coefficient bounds, cardioid-shaped domain, q-Bie

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