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Turkish Journal of Mathematics

The Turkish Journal of Mathematics is an international, bi-monthly, peer-reviewed, diamond open-access journal published by the Scientific and Technological Research Council of Türkiye (TÜBİTAK). Turk J Math is devoted to all fields of mathematics. The journal is published in January, March, May, July, September, and November. The journal has been indexed in SCI-E and Scopus.

ISSN: 1300-0098

EISSN: 1303-6149

Journal Metrics

Impact Factor (2025) 1.1

5-Year Impact Factor 0.9

Category Quartile Q2

Current Issue: Volume 50, Number 5 (2026)

Cover and Contents

Research Articles

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On families of Finsler metrics
İSMAİL SAĞLAM, KEN'ICHI OHSHIKA, and ATHANASE PAPADOPOULOS
Pages 875-901

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On the generalized Cesàro sequence spaces and some of their properties
UĞUR GÖNÜLLÜ, FARUK POLAT, and MARTIN RICHARD WEBER
Pages 933-949

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A full-scale watertight workflow numerical study for a triangular fin and tube heat exchanger
HAMDİ SELÇUK ÇELİK, BAHADIR DOĞAN, and LATİFE BERRİN ERBAY
Pages 970-988

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Characterizations of bi-Riordan arrays
NAİM TUĞLU and FATMA YEŞİL BARAN
Pages 989-1007

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Exponential stability for a strongly damped wave equation with distributed internal delay
MANAL ALOTAIBI, NASSER-EDDINE TATAR, and WALED AL-KHULAIF
Pages 1008-1030

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​Compact and AM-compact orthogonally additive operators
BAHRİ TURAN and BİROL ALTIN
Pages 1067-1076

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Hyers-Ulam and Hyers-Ulam Rassias stability of Caputo fractional Hahn difference equations
KARIMA MOHAMED ORABY, ALAA E. HAMZA, and AFRAH AL-BOSSLY
Pages 1077-1094

Editors

Editor-in-Chief
Prof. Dr. Adnan TERCAN
Hacettepe University

Associate Editor-in-Chief
Prof. Dr. Aydın GEZER
Atatürk University

Editorial Board