On posets of width two with positive Tits form

Vitalij M. Bondarenko, Marina V. Styopochkina

Abstract


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.


Keywords


minimax (semiminimax) sum, (min, max)-equivalent posets, positive form, the quadratic Tits form

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