2 papers
math.RT2015
Module Degenerations and Finite Field Extensions
Nils Nornes
Degeneration of modules is usually defined geometrically, but due to results of Zwara and Riedtmann we can also define it in terms of exact sequences. This definition also works ov…
math.RT2014
Degenerations of submodules and composition series
Nils Nornes, Steffen Oppermann
Let and be modules over an artin algebra such that degenerates to . We show that any submodule of degenerates to a submodule of . This suggests that a composi…