On posets of width two with positive Tits form

• Date: 2018
• Main Authors: Bondarenko, Vitalij M., Styopochkina, Marina V.
• Format: Article
• Language: English
• Published: Lugansk National Taras Shevchenko University 2018
• Subjects: minimax (semiminimax) sum; (min; max)-equivalent posets; positive form; the quadratic Tits form; 15A63; 16G20; 16G60
• Online Access: https://admjournal.luguniv.edu.ua/index.php/adm/article/view/933
• Journal Title: Algebra and Discrete Mathematics

We give a complete description of the finite posets of width two with the Tits form to be positive. This problem arises in studying the categories of representations of posets of finite type.