The singular linear preservers of non-singular matrices

Published 8 Feb 2010 in math.RA | (1002.1732v2)

Abstract: Given an arbitrary field K, we reduce the determination of the singular endomorphisms $f$ of M_n(K) that stabilize GL_n(K) to the classification of n-dimensional division algebras over K. Our method, which is based upon Dieudonn\'e's theorem on singular subspaces of M_n(K), also yields a proof for the classical non-singular case.

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Authors (1)

Clément de Seguins Pazzis

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