Decomposition of matrices into product of idempotents and separativity of regular rings

S. K. Jain, A. Leroy

Following O'Meara's result [Journal of Algebra and Its Applications Vol~\textbf{13}, No. 8 (2014)], it follows that the block matrix $A=\begin{pmatrix} B & 0 0 & 0 \end{pmatrix} \i…