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math.RT2018
Reduction of exact structures
Thomas Brüstle, Souheila Hassoun, Denis Langford +1
Examples of exact categories in representation theory are given by the category of Delta-filtered modules over quasi-hereditary algebras, but also by various categories related to…
math.CO2018
Non-Leaving-Face property for marked surfaces
Thomas Brüstle, Jie Zhang
We consider the polytope arising from a marked surface by flips of triangulations. Sleator, Tarjan and Thurston studied in 1988 the diameter of the associahedron, which is the poly…