**Thai Journal of Mathematics (TJM)**is a peer-reviewed, open access international journal publishing original research works of high standard in all areas of pure and applied mathematics.

**Publication Frequency**

TJM publishes one volume per year. Usually a volume consists of three issues with about 200 pages each.

Appear : April, August and December. Occasionally special issues are also published. Papers are published as soon as they are accepted.

*March*,

*June*,

*September*and

*December*). All manuscripts are refereed under the same standards as those used by the finest-quality printed mathematical journals. Accepted papers will be published online in their final form as a TJM formatted PDF and will be published in four issues annually.

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**Reviewing/Indexing**

**is covered Abstracted, Reviewed and Indexeded in:**

Thai J Math.

Thai J Math.

**Mathematical Reviews**,

**MathSciNet**,

**Zentralblatt MATH Database**,

**Google Scholar**and

**Scopus [Elsevier]**

**Thomson Reuters**).

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**Call for papers**

## Special issue dedicated to Professor Suthep Suantai for his 60th birthday anniversary

A special issue of Thai Journal of Mathematics –Vol. 18 No.3/2020 – will be Dedicated to Professor Suthep Suantai for his 60th birthday anniversary. Authors of papers related to areas of expertise of Professor Suthep Suantai are invited to submit a manuscript for this special issue.

Submission

Authors should follow the usual procedure of Thai Journal of Mathematics (TJM) for the preparation as well as for the submission of their work (http://thaijmath.in.cmu.ac.th/index.php/thaijmath/index), but they have to clearly mention during the submission process that the manuscript is intended for the “Special issue: Dedicated to Prof.Suthep Suantai for his 60th birthday anniversary”, by selecting Article type accordingly.

Timeline

Submissions Due: Closed

Expected Acceptance Notification: 30 June 2020

Expected On-line / Printed Publication: 30 September 2020

Guest Editors:

Attapol Kaewkhao, Chiang Mai University

Narin Petrot, Naresuan University

Pasit Cholamjiak, University of Phayao

Poom Kumam, KMUTT

**This workshop is a celebration of the 60th birthday of Professor Dr. Suthep Suantai.**

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### Special Issue (2020): Annual Meeting in Mathematics 2019

The 24th Annual Meeting in Mathematics (AMM 2019) organized by Departments of Mathematics, Faculty of Science, Burapha University, Thailand.

### Table of Contents

#### Articles

Editorial | |

Sineenart Srimongkol |

Convergence in Hausdorff Content of Generalized Simultaneous Pade Approximants | |

Methawee Wajasat, Nattapong Bosuwan | 1-23 |

A Note on the Rate of Convergence of Poles of Generalized Hermite-Pade Approximants | |

Nattapong Bosuwan | 25-37 |

Connections of (m, n)-bi-quasi Hyperideals in Semihyperrings | |

Bundit Pibaljommee, Warud Nakkhasen | 39-48 |

On 2-absorbing Primary Ideals in Commutative Γ-semirings | |

Nuttawut Sangjaer, Sajee Pianskool | 49-60 |

Jensen’s Type Inequalities Involving Tracy-Singh Products, Khatri-Rao Products, Tracy-Singh Sums and Khatri-Rao Sums | |

Arnon Ploymukda, Pattrawut Chansangiam | 61-80 |

On ∆-Convergence Theorems in b-CAT(0) Spaces | |

Cholatis Suanoom | 81-88 |

The Rectangular Quasi-Metric Space and Common Fixed Point Theorem for ψ-Contraction and ψ-Kannan Mappings | |

Wongvisarut Khuangsatung, Saowapak Chan-iam, Patchara Muangkarn, Cholatis Suanoom | 89-101 |

Finite Integration Method via Chebyshev Polynomial Expansion for Solving 2-D Linear Time-Dependent and Linear Space-Fractional Differential Equations | |

Ratinan Boonklurb, Ampol Duangpan, Arnont Saengsiritongchai | 103-131 |

Some Forbidden Rectangular Chessboards with Generalized Knight’s Moves | |

Sirirat Singhun, Krit Karudilok, Ratinan Boonklurb | 133-145 |

Exact Solutions of the Conformable Space-Time Chiral Nonlinear Schrodinger’s Equations | |

Sekson Sirisubtawee, Nattawut Khansai, Sanoe Koonprasert, Montri Torvattanabun | 147-166 |

Some Remarks on Paramedial Semigroups and Medial Semigroups | |

Nares Sawatraksa, Chaiwat Namnak, Chaiwat Namnak | 167-176 |

Limit Distribution Functions for Sums of the Reciprocals of a Power of Tangent of Random Variables | |

Kittipong Laipaporn, Kanokwan Burimas, Petcharat Rattanawong | 177-190 |

Strong Convergence of the Shrinking Projection Method for the Split Equilibrium Problem and an Infinite Family of Relatively Nonexpansive Mappings in Banach spaces | |

Nutchari Niyamosot, Warunun Inthakon | 191-205 |

Analytical Solution for a 3D Model of the Airflow in a Human Upper Respiratory Tract | |

Chatvarin Tasawang, Supachara Kongnuan | 207-222 |

The Existence Theorem for a Coincidence Point of Some Admissible Contraction Mappings in a Generalized Metric Space | |

Anchalee Khemphet | 223-235 |

On some Algrebraic Structures of AG*-groupoids | |

Punyapat Kammoo, Chaiwat Namnak | 237-246 |

The Characterization of Caterpillars with Multidimension 3 | |

Varanoot Khemmani, Supachoke Isariyapalakul | 247-259 |

Domination Game on Powers of Cycles | |

Nattakritta Chantarachada, Chalermpong Worawannotai | 261-268 |

A Non-standard Ternary Representation of Integers | |

Wipawee Tangjai | 269-283 |

Left and Right Magnifying Elements in Certain Linear Transformation Semigroups | |

Pongsan Prakitsri | 285-291 |

Common Fixed Point Theorems for Firmly Nonspreading Mappings and Quasi-Nonexpansive Mappings in CAT(0) Spaces | |

Tanaphong Prommai, Attapol Kaewkhao, Warunun Inthakon | 293-301 |

Permanence and Global Attractivity of a HPA Axis Model Related to Depression | |

Teerarat Arunrat, Sanoe Koonprasert, Sekson Sirisubtawee | 303-323 |

Makespan Minimization for Parallel Machines Environment with Machine Dependent Processing Time by Using PBIL Combined with Local Search | |

Pensiri Sompong, Sungkom Srisomporn | 325-337 |

Automatic Defect Detection for Mango Fruit Using Non-Extensive Entropy with Gaussian Gain | |

Kotchakorn Tiemtud, Pornpimon Saprasert, Thanikarn Tormo, Saifon Chaturantabut | 339-349 |

Numerical Solutions of the Elliptic Differential and the Planetary Motion Equations by Haar Wavelet - Quasilinearization Technique | |

Rawipa Yangchareonyuanyong, Sanoe Koonprasert, Sekson Sirisubtawee | 351-370 |

A Numerical Study of Efficient Sampling Strategies for Randomized Singular Value Decomposition | |

Siriwan Intawichai, Saifon Chaturantabut | 371-385 |

Solving the Poisson Process in Conformable Fractional Calculus Sense by Homotopy Perturbation Method | |

Sirawit Makaew, Khomsan Neamprem, Sanoe Koonprasert | 387-399 |

Improved Bounds on the Size of Separating Hash Families of Short Length | |

Penying Rochanakul | 401-412 |

**The Thai Journal of Mathematics ***organized and supported by *The Mathematical Association of Thailand and Thailand Research Council and the Center for Promotion of Mathematical Research of Thailand (CEPMART).

**Copyright** 2020 by the Mathematical Association of Thailand.

All rights reserve. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, without the prior permission of the Mathematical Association of Thailand.

|ISSN 1686-0209|