The formula ABA=Tr(AB)A for matrices
Rings and Algebras
2023-06-06 v2
Authors:
Grigore Calugareanu
Abstract
We prove that this formula characterizes the square matrices over commutative rings for which all 2 x 2 minors equal zero.
Keywords
Cite
@article{arxiv.2306.00801,
title = {The formula ABA=Tr(AB)A for matrices},
author = {Grigore Calugareanu},
journal= {arXiv preprint arXiv:2306.00801},
year = {2023}
}
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