## Thai Journal of Mathematics

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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.

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Call for papers
A Special Issue of Thai Journal of Mathematics: STRUCTURAL CHANGE MODELING AND OPTIMIZATION IN ECONOMETRICS
http://thaijmath.in.cmu.ac.th
This Special Issue welcomes submissions dealing with the main topic of "structural change/ change point modeling in econometrics" and related issues, including optimization, both theory and applications.

This Special Issue will appear in April, 2019.
Guest Editor: Hung T. Nguyen (hunguyen@nmsu.edu)
Instructions for submission:
Authors should submit their manuscript in PDF file (up to 20 pages),
electronically, DIRECTLY to the Guest Editor at: hunguyen@nmsu.edu
mentioning that it is for this Special Issue.
After the acceptance, authors must send their manuscript in LATEX file
(and the Signed transfer of copyright) to hunguyen@nmsu.edu
CC thaijmath@cmu.ac.th

The authors can find the "Head of LATEX form" from the Journal Website.
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Call for papers
A Special Issue on AMM2018
A Special Issue of Thai Journal of Mathematics is Proceeding of the 23rd Annal Meeting in Mathematics (AMM2018), May 3-5, 2018 organized by Departments of Mathematics, Faculty of Science, KMUTT
The schedule is as follows.Submission deadline: August 31, 2018
For manuscript format and submission on http://thaijmath.in.cmu.ac.th choose Special Issue:  AMM2018
Announcements of reviewing results: October 8, 2018
Final manuscript submission: October 30, 2018
Final versions of accepted papers should be send electronically, in both pdf and Latex files, to poom.kumam@mail.kmutt.ac.thwith the copyright transfer to the publisher.

The Special Issue will appear in December 2018
Editors: Poom Kumam and Parin Chaipunya, KMUTT
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Call for papers
A Special Issue on ACFPTO2018
A Special Issue of Thai Journal of Mathematics is Proceeding of July 16-18, 2018 organized by Departments of Mathematics, Faculty of Science, Chiang Mai University. http://www.math.science.cmu.ac.th/acfpto2018/index.html
For manuscript format and submission on http://thaijmath.in.cmu.ac.th choose Special Issue: ACFPTO2018

Announcements of reviewing results: October 30, 2018
Final manuscript submission: November 30, 2018
The Special Issue will appear in December 2018.

Final versions of accepted papers should be send electronically, in both pdf and Latex files, to poom.kumam@mail.kmutt.ac.th with the copyright transfer to the publisher.

The Special Issue will appear in December 2018
Editors: Sompong Dhompongsa, Poom Kumam and Yeol Je Cho
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Reviewing/Indexing
Thai J Math.
is covered Abstracted, Reviewed and Indexeded in:
Emerging Sources Citation Index (ESCI) [Web of Science by © 2018 Clarivate Analytics]
Mathematical ReviewsMathSciNet,
Zentralblatt MATH Database,
Scopus [Elsevier]

The SJR indicator measures the scientific influence of the average article in a journal, it expresses how central to the global scientific discussion an average article of the journal is. Cites per Doc. (2y) measures the scientific impact of an average article published in the journal, it is computed using the same formula that journal impact factor ™ (Thomson Reuters).
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### Vol 16, No 1 (2018): April

#### Articles

 An Incremental Approach to Share-Frequent Itemsets Mining PDF Chayanan Nawapornanan, Sarun Intakosum, Veera Boonjing 1-23
 Existence Results for Second Order Neutral Integrodifferential Equations of Sobolev Type in Banach Spaces PDF Bheeman Radhakrishnan 25-47
 Common Fixed Points of an Iterative Method for Berinde Nonexpansive Mappings PDF Limpapat Bussaban, Atichart Kettapun 49-60
 A Hybrid Subgradient Algorithm for Finding a Common Solution of Pseudomonotone Equilibrium Problems and Hierarchical Fixed Point Problems of Nonexpansive Mappings PDF Rattanaporn Wangkeeree, Kiattisak Rattanaseeha, Rabian Wangkeeree 61-77
 On Generalized Strong Vector Variational Inequality Problem with Fuzzy Mappings PDF S.M. Halimi, A.P. Farajzadeh, A. Kaewcharoen 79-87
 Strong Convergence for $ANI$ Mappings PDF Kamonrat Nammanee, Kornwirin Chumuang, Raweewan Gatema, Supansa Jaipanya, Rungthip Sudseangsang 89-101
 Characterizations of Fuzzy Ideals of Semigroups by Soft Sets PDF Manoj Siripitukdet 103-120
 Tripled Coincidence Point Theorems with $M$-Invariant Set for a $\alpha$-$\psi$-Contractive Mapping in Partially Metric Spaces PDF Phakdi Charoensawan 121-138
 Approximating Common Fixed Points of Two $\alpha$-Nonexpansive Mappings PDF Khanitin Muangchoo-in, Poom Kumam, Yeol Je Cho 139-145
 On Optimization via $\epsilon$-Generalized Weak Subdifferentials PDF P. Cheraghi, A.P. Farajzadeh, S. Suantai 147-164
 Regular Elements of the Variant Semigroups of Transformations Preserving Double Direction Equivalences PDF Winita Yonthanthum 165-171
 Existence of Best Proximity Points for a Class of Generalized Cyclic Contraction Mappings PDF Somboon Niyom, Pornpimon Boriwan, Narin Petrot 173-182
 Convergence Theorems of Iterative Methods for System of Strongly Nonlinear Nonconvex Variational Inequalities PDF Issara Inchan 183-194
 On the Delta-Hedging of the Option Price on Future from the Black-Scholes Equation PDF Amnuay Kananthai, Rujira Ouncharoen 195-202
 Convergence Analysis for Relaxed Extragradient Method and Variational Inequality Problem with Numerical Example PDF Keerati Siriyan, Atid Kangtunyakarn 203-218
 Some Convergence Theorems of Three-Step Iteration for $G$-Nonexpansive Mappings on Banach Spaces with Graph PDF Yaowaluk Alibaud, Sarachai Kongsiriwong, Orawan Tripak 219-228
 Some Notes on Cone Metric Spaces PDF M. Tavakoli, A.P. Farajzadeh, T. Abdeljawad, S. Suantai 229-242
 The Modified Viscosity Iteration with $m$-Generalized Hybrid Mappings and $(a,b)$-Monotone Mappings for Equilibrium Problems PDF Pichada Sadeewong, Teerapol Saleewong, Poom Kumam, Yeol Je Cho 243-265
 On the Inequalities Concerning to the Polar Derivative of a Polynomial with Restricted zeros PDF Irshad Ahmad, Abdul Liman, Wali Mohammad Shah 267-274
 Dissipative Extensions of Fourth Order Differential Operators PDF Huseyin Tuna, Bilender Pasaoglu Allahverdiev 275-285

Copyright 2018 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|