Volume XXXVI: 2026

Issue 1  (July 2026)

Editors Page 04

Structural Analysis of k-Isohedral Tilings of  Convex Pentagons: The Cases k = 2 
and k = 3.

by Shintaro Sakai05
Fifty Years Anniversary of the Four-Color Theoremby Alexander Soifer24

Three Applications of Geometric Reasoning:  Why Metastasis Is Mainly Caused by 
Elongated Cancer Cells?  How Body Shape Affects Curiosity? 
Why Ring Fractures in Ice?

by Julio C. Urenda, Olga Kosheleva and Vladik Kreinovich38
Books 46

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