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1 paper

math.RT2026

Homological Epimorphisms and Hochschild-Mitchell Cohomology

V. Santiago-Vargas, E. O. Velasco-Páez

In this work, we study the Hochschild-Mitchell Cohomology of triangular matrix categories. Given a triangular matrix category $Λ=\left[ \begin{smallmatrix} \mathcal{T} & 0 \\ M &…