Liu, Zhi-Hong Wang, Zhi-Gang Rasila, Antti Jiang, Yue-Ping
Published in
Bulletin of the Malaysian Mathematical Sciences Society

We prove that convolutions of harmonic right half-plane mappings with harmonic vertical strip mappings are univalent and convex in the horizontal direction. The proofs of these results make use the Gauss–Lucas Theorem. Our results show that two recent conjectures, the one by Kumar, Gupta, Singh and Dorff, and the one of Liu, Jiang and Li, are true....

Suh, Young Jin Hwang, Doo Hyun
Published in
Bulletin of the Malaysian Mathematical Sciences Society

We study Ricci-commuting real hypersurfaces in the complex hyperbolic quadric Qm∗=SO2,mo/SOmSO2\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${{Q^m}^*} = SO^{o}_{2,m}/...

Kwon, Oh Sang Lecko, Adam Sim, Young Jae
Published in
Bulletin of the Malaysian Mathematical Sciences Society

In the present paper, the estimate of the third Hankel determinant H3,1(f)=a1a2a3a2a3a4a3a4a5\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\begin{aligned} \begin{alig...

Bhowmik, Bappaditya Parveen, Firdoshi
Published in
Bulletin of the Malaysian Mathematical Sciences Society

Let Vp(λ)\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\mathcal {V}}_p(\lambda )$$\end{document} be the collection of all functions f defined in the unit disc D\docu...

He, Fangyi Samet, Bessem Zhou, Yong
Published in
Bulletin of the Malaysian Mathematical Sciences Society

In this paper, we consider the Cauchy problem of a full compressible Hall-MHD system. H˙-s0

Luo, Chaoliang Guo, Shangjiang Hou, Aiyu
Published in
Bulletin of the Malaysian Mathematical Sciences Society

In this paper, we study the well-posedness of mild solutions to stochastic parabolic partial functional differential equations with space–time white noise. Firstly, we establish an existence–uniqueness theorem under the global Lipschitz condition and the linear growth condition. Secondly, we show the existence–uniqueness property under the global/l...

Henning, Michael A. Klavžar, Sandi
Published in
Bulletin of the Malaysian Mathematical Sciences Society

Let γtg(G)\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\gamma _\mathrm{tg}(G)$$\end{document} denote the game total domination number of a graph G, and let G|v mean ...

Mohamad, Ahmad Qushairi Khan, Ilyas Jiann, Lim Yeou Shafie, Sharidan Isa, Zaiton Mat Ismail, Zulkhibri
Published in
Bulletin of the Malaysian Mathematical Sciences Society

In this paper, the effects of heat and mass transfer (double convection) on unsteady magnetohydrodynamic flow of incompressible viscous fluids in a porous medium under the influence of non-coaxial rotation are analyzed. The flow is induced due to buoyancy force and oscillating bounding disk. The dimensionless governing equations for the velocity fi...

Ponnusamy, Saminathan Starkov, Victor V.
Published in
Bulletin of the Malaysian Mathematical Sciences Society

One of the aims of this article is to provide a class of polynomial mappings for which the Jacobian conjecture is true. Also, we state and prove several global univalence theorems and present a couple of applications of them.

Thomas, D. K. Abdul Halim, S.
Published in
Bulletin of the Malaysian Mathematical Sciences Society

The authors have retracted this article because the article contains major flaws in the proof of the main results. The results of the paper are invalid, since the assumption that the functionals considered are rotationally invariant is not valid. All authors have agreed to this retraction.