An exact structure approach to almost rigid modules over quivers of type $\mathbb{A}$

Thomas Brüstle, Eric J. Hanson, Sunny Roy +1

Let $A$ be the path algebra of a quiver of Dynkin type ${\mathbb{A}}_n$. The module category $\text{mod}A$ has a combinatorial model as the category of diagonals in a polygon $S$ w…