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math.RT2026
Indecomposable extensions of perverse sheaves over a closed stratum
Alessio Cipriani
Given a topologically stratified space , we develop a categorical framework for extensions of perverse sheaves over a closed stratum . We introduce the notion of -small ex…
math.RT2026
Faithful perversities
Alessio Cipriani, Jon Woolf
We show that the faithful highest weight hearts in an algebraic triangulated category are the serially faithful glued hearts, equivalently the hearts containing a dual pair of full…