Volume & Issue: Volume 6, Issue 28, January and February 2021 
4. Fuzzy Graph Coloring in Traffic Lights Problem

Pages 31-44

Yahya Talebi Rostami; Siyamak Firouzian; Ali Reza Moniri Hamzekolaee; Mostafa Nouri Jouybari


5. Weak amenability of Beurling algebra free products

Pages 45-56

Elham Gheisari; Akram Yousofzadeh; Mohammad Sadegh Asagri


8. A generalization of the Erdos-Serpinski conjecture

Pages 75-82

Hamid Torabi; AmirAli Fatehizadeh