2 papers
math.RT2026
From Pre-triangulation to Triangulation: Obstructions and Exact Lifting
Ping He, Bo Le
We give a new equivalent formulation of Verdier's octahedral axiom. An initial square in a pre-triangulated category determines an obstruction in a quotient of ordinary Hom groups.…
math.RT2025
The quiver with superpotentials of a -angulation of a marked surface
Bo Le, Bin Zhu
In this paper, we associate a quiver with superpotential to each -angulation of a (unpunctured) marked surface. We show that, under quasi-isomorphisms, the flip of a -angulat…