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math.RT2024
Computing component groups of stabilizers of nilpotent orbit representatives
Emanuele Di Bella, Willem A. De Graaf
The theory of nilpotent orbits of simple Lie algebras has seen tremendous developments over the past decades. In this context an important role is played by the component group of…
math.RA2024
A computational approach to almost-inner derivations
Heiko Dietrich, Willem A. de Graaf
We present a computational approach to determine the space of almost-inner derivations of a finite dimensional Lie algebra given by a structure constant table. We also present an e…