Singular matrices that are products of two idempotents or products of two nilpotents

Over commutative domains we characterize the singular 2 × 2 matrices which are products of two idempotents or products of two nilpotents. The relevant casees are the matrices with zero second row and the singular matrices with only nonzero entries.

Bibliographic Details
Main Author: Călugăreanu Grigore
Format: Article
Language:English
Published: De Gruyter 2021-09-01
Series:Special Matrices
Subjects:
Online Access:https://doi.org/10.1515/spma-2021-0146