Full Description
This book constitutes the refereed proceedings of the 15th International Conference on the Theory and Application of Diagrams, Diagrams 2026, held in Tallinn, Estonia, during August 25-28, 2026.
The 14 full papers, 20 short papers and 9 posters included in this book were carefully reviewed and selected from 57 submissions. They were organized in topical sections as follows: Logical Diagrams; Mathematical Diagrams; Diagrams and Cognition; Diagrams and Computation; and Applications.



