Change in Publication Schedule:

We are happy to announce that the Journal of Mathematical Extension will be published monthly from the beginning of 2022. Therefor this journal will publish 12 issues per year from now on, e.g. the publication schedule in 2022 will be Volume 16, Issues 1–12 (January–December 2022). This aligns with the journal's policy of speeding the publication process of accepted papers and decreasing the large number of papers waiting in the publishing queue.

#### Vol. 16, No. 1, (2022)

 $\alpha-$prime ideals PDF Ismael Akray, Haval Mohammed Salih
 ‎The Lengths of Conjugate Type Vectors in a Finite Group and Their Applications PDF Kayvan Moradipour
 Quasi-multipliers on group algebras related to a locally compact group PDF Mohammad Javad Mehdipour, Gholam Reza Moghimi
 Stabilized finite element method for the approximation of linearized viscoelastic fluid flow models PDF Shahid Hussain, Afshan Batool, Sajid Hussain, Vishnu Narayan Mishra
 On qualitative behaviors of nonlinear singular systems with multiple constant delays PDF Cemil Tunc, Abdullah Yiğit
 Approximate Generalized Additive-Quadratic Functional Equations on Ternary Banach Algebras PDF Sedigheh Jahedi, Vahid Keshavarz

#### Vol. 16, No. 2, (2022)

 Norm estimates of the pre--schwarzian derivatives for two certain subclasses of starlike functions PDF Hesam Mahzoon
 CHARACTERIZATION OF APPROXIMATE MONOTONE OPERATORS PDF Mahboubeh Rezaie, Zahra Sadat Mirsaney
 ‎‎Evaluating Groups of Decision Making Units in the Data Envelopment Analysis based on Cooperative ‎Games PDF Sanaz Asadi Rahmati, Reza Fallahnejad
 On the Space of Real Valued Statistically Convergent Sequences PDF Y. Sohooly, Khadijeh Jahedi, A. Alikhani-Koopaei
 Coposinormal Weighted composition operators on $H^{2}(\mathbb{D})$ PDF Prasad Thankarajan
 Developing an iterative method to solve two- and three-dimensional mixed Volterra-Fredholm integral equations PDF Jafar Khazaeian, Noradin Parandin, Farajollah Yaghobi, Nasrin Karamikabir

#### Vol. 16, No. 3, (2022)

 Domination of vague graphs by using of strong arcs PDF Sadegh Banitalebi, Rajab Ali Borzooei
 Strong Convergence of Split-Step Forward Methods for Stochastic Differential Equations Driven by SS processes PDF Bahram Tarami, Mohsen Avaji
 On Odd Duals of a Banach Algebra as a Banach Algebra PDF Mina Ettefagh
 Identifying Exact Pairs of Zero-divisors from Zero-divisor Graphs of Commutative Rings PDF Justin Hoffmeier
 A NEW APPROACH TO THE STUDY OF SOLUTIONS FOR A FRACTIONAL BOUNDARY VALUE PROBLEM IN HOLDER SPACES PDF Z. Ahmadi, Rahmatollah Lashkaripour, S. Heidartkhani
 Notes on lifting of Mannheim partner curve on tangent space TR³ PDF Haşim ÇAYIR, Rabia AKPINAR

#### Vol. 16, No. 4, (2022)

 Global behavior of a second order difference equation with two-period coefficient PDF Ali Yıldırım, Durhasan Turgut Tollu
 A NOTE ON TOPOLOGICAL COMPLEXITY OF REAL GRASSMANN MANIFOLDS PDF Fezzeh Akhtarifar, Mohammad Ali Asadi
 A New Method for Selecting the Most Appropriate Suppliers in the Supply Chain using DEA PDF Haniyeh Ghamgosar, Mohsen Rostamy-Malkhalifeh, Masoud Sanei, Farhad Hosseinzadeh-lotfi, Ghasem Tohidi
 Some fuzzy multigroups obtained from fuzzy subgroups PDF Saeed Mirvakili, Hossein Naraghi, Maryam Shirvani, Peyman Ghiasvand
 Cost Efficiency Estimation in Network DEA in the Case of Varying Input Prices PDF Masoomeh Hajiani, Reza Fallahnejad