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math.RT2019
A note on vertices of indecomposable tensor products
Markus Linckelmann
G. Navarro raised the question under what circumstancs two vertices of two indecomposable modules over a finite group algebra generate a Sylow -subgroup. The present note provid…
math.RT2019
On the Lie algebra structure of of a finite-dimensional algebra
Markus Linckelmann, Lleonard Rubio y Degrassi
Let be a split finite-dimensional associative unital algebra over a field. The first main result of this note shows that if the Ext-quiver of is a simple directed graph, th…