Vol 35, No 15 (2021)

Table of Contents

Some mathematical properties of the geometric--arithmetic index/coindex of graphs
Stefan Stankov, Marjan Matejic, Igor Milovanovic, Emina I. Milovanovic
A Note on Evolution Equation on Manifold
Allaberen Ashyralyev, Yasar Sozen, Fatih Hezenci
Spectral Radius and Energy of Sombor Matrix of Graphs
Zhao Wang, Yaping Mao, Ivan Gutman, Jichang Wu, Qin Ma
On Block diagonal majorization and Basic sequences
Ali Bayati Eshkaftaki, Noha Eftekhari
Bourgain algebras of ideals in $H^\infty$ generated by inner functions
Miroslav Hristov
Global optimal solutions of a system of differential equations via measure of noncompactness
Moosa Gabeleh, Jack Markin
Iterated Function System of Generalized Contractions in Partial Metric Spaces
Talat Nazir, Melusi Khumalo, Vuledzani Makhoshi
Some Tauberian theorems for Ces\`{a}ro summability of double integrals over $\mathbb{R}_{+}^{2}$
Gökşen Fındık, İbrahim Çanak
Embedding Besov Type spaces $\d$ into tent spaces and Volterra integral operators
Qian Ruishen
Asymptotical mean-square stability of split-step theta methods for stochastic pantograph differential equations under fully-geometric mesh
Xiaochen Yang, Yu Xiao, Zhanwen Yang, Chiping Zhang
The uniform asymptotic normality of a matrix-T distribution
mao shou
Hopkins-Levitzki theorem for Krasner hyperrings
Sohrab Ostadhadi-Dehkordi, Kar Ping Shum
Cline's Formula and Jacobson's Lemma for G-Drazin inverse
Huanyin Chen, Marjan Sheibani Abdolyousefi
Product structures and complex structures of Hom-Lie-Yamaguti algebras
lihong Dong
On the preconditioning of three-by-three block saddle point problems
Hamed Aslani, Davod Khojasteh Salkuyeh, Fatemeh Panjeh Ali Beik
Weakly S-Artinian Modules
Omid Khani-Nasab, Ahmed Hamed
The spectral norm and spread of g-circulant matrices involving generalized Tribonacci numbers
Shouqiang Shen, Weijun Liu, Lihua Feng
New Topologies From Obtained Operators via Weak Semi-Local Function, and Some Comparisons
Ferit Yalaz, Aynur Keskin Kaymakcı
POINTS OF OPENNESS OF SOME MAPPINGS
Lubica Hola
Geometric characteristics of a manifold with a symmetric-type quarter-symmetric projective conformal non-metric connection
Di Zhao, Talyun Ho, Kumhyok Kwak, CholYong Jon
Certain results of conformal and *-conformal Ricci soliton on para-cosymplectic and para-Kenmotsu manifolds
Sumanjit Sarkar, Santu Dey, Xiaomin Chen
Analysis of A Tritrophic Food Chain Model with Fear Effect Incorporating Prey Refuge
Sangeeta Saha, Guruprasad Samanta
On $\mathbb{A}$-numerical radius inequalities for $2 \times2$ operator matrices-II
Satyajit Sahoo
Szász type operators involving Charlier polynomials and approximation properties
A.A. H. Al-Abied, M. Ayman Mursaleen, M. Mursaleen

In Sung Hwang - Operator theory

A distinction of $k$-hyponormal and weakly $k$-hyponormal weighted shifts
Chunji Li, Mi Ryeong Lee, Yiping Xiao

Hemen Dutta - Nonlinear analysis, Functional equation, Summability

Certain Properties of Lupas- Kantorovich operators
Vijay Gupta
ON THE MATRIX CLASSES (c0,c0) AND (c0,c0;P) OVER COMPLETE ULTRAMETRIC FIELDS
P.N. Natarajan

Pratulananda Das - Set theory, Topology, Summability

On some enriched contractions in Banach spaces and an application
Pratikshan Mondal, Hiranmoy Garai, Lakshmi Kanta Dey