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JMB Journal of Microbiolog and Biotechnology

OPEN ACCESS eISSN 0454-8124
pISSN 1225-6951
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Article
30 September 2023

Annihilating Conditions of Generalized Skew Derivations on Lie Ideals

Nadeem ur Rehman and Sajad Ahmad Pary, Junaid Nisar∗

Kyungpook Mathematical Journal 2023; 63: 325-331

Let A be a prime ring of c
Key Words:

Prime ring, Generalized skew derivation

Article
30 September 2023

Weak u-S-flat Modules and Dimensions

Refat Abdelmawla Khaled Assaad*, Xiaolei Zhang

Kyungpook Mathematical Journal 2023; 63: 333-344

In this paper, we generalize the notions uniformly S-flat, briefly u-S-flat, modules and dimensions. We introduce and study the notions of weak u-S-flat modules. An ...
Key Words:

flat module, u-S-flat module, weak u-S-flat module, u-S-torsion, u-S-exact sequence, u-S-von Neumann regular ring

Article
30 September 2023

On the Tarry-Escott and Related Problems for 2×2 matrices over

Supawadee Prugsapitak∗ and Walisa Intarapak, Vichian Laohakosol

Kyungpook Mathematical Journal 2023; 63: 345-353

Reduced solutions of size 2 and degree n of the Tarry-Escott problem over M2(
Key Words:

Diophantine Equation, Matrix Equation, Tarry-Escott Problem

Article
30 September 2023

Towards A Dichotomy for the List Switch Homomorphism Problem for Signed Graphs

Hyobeen Kim and Mark Siggers∗

Kyungpook Mathematical Journal 2023; 63: 355-372

We make advances towards a structural characterisation of the signed graphs H for which the list switch H-colouring problem List-S-Hom
Key Words:

Signed graph, Edge coloured graph, Homomorphism complexity, Switching, List colouring

Article
30 September 2023

Ideal Classes and Cappell-Shaneson Homotopy 4-Spheres

Min Hoon Kim∗, Shohei Yamada

Kyungpook Mathematical Journal 2023; 63: 373-411

Gompf proposed a conjecture on Cappell-Shaneson matrices whose affirmative answer implies that all Cappell-Shaneson homotopy 4-spheres are diffeomorphic to the standard 4-sphere. We study Gompf conjecture on Cappell-Shaneson matrices using various al...
Key Words:

Cappell-Shaneson homotopy 4-spheres, Ideal class monoids

Article
30 September 2023

Lp-boundedness (1p) for Bergman Projection on a Class of Convex Domains of Infinite Type in 2

Ly Kim Ha

Kyungpook Mathematical Journal 2023; 63: 413-424

The main purpose of this paper is to show that over a large class of bounded domains Ω⊂ℂ2
Key Words:

Bergman projection, Bloch functions, Besov functions, finite/infinite type

Article
30 September 2023

Miyachi's Theorem for the k-Hankel Transform on d

Mohamed Amine Boubatra

Kyungpook Mathematical Journal 2023; 63: 425-435

The classical Hardy Theorem on ℝ states that a function f and its Fourier transform cannot be simultaneously...
Key Words:

k-Hankel transform, Miyachi's theorem, Hardy's theorem

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