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Decomposition of a square matrix into a product of a nilpotent matrix and an involutive or idempotent matrix

open access: yes
In this note, we give a complete characterization of square matrices of size $n$ over a commutative field which can be expressed as a product of a nilpotent matrix and an involutive matrix and matrices which can be expressed as a product of a nilpotent matrix and an idempotent matrix, in terms of invariant factors.
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Tropical (0, −1) Idempotent Matrix

open access: yesJournal of Applied Mathematics and Physics
Chonghua Cheng, Dandan Su
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