2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/125073This paper is intended to help the readers to understand the article: Y. Hirashita, Least-Squares Prices of Games, Preprint (arXiv:math.OC/0703079).11 pagesOptimization and Control91B24 (Primary); 91B28 (Secondary)text