the group involutory matrix of the combinations of two idempotent matrices
;Lingling Wu;Xiaoji Liu;Yaoming Yu
Chemico-biological interactions2012Vol. 2012pp. -
128
wu2012journalthe
Abstract
We discuss the following problem: when aP+bQ+cPQ+dQP+ePQP+fQPQ+gPQPQ of idempotent matrices P and Q, where a,b,c,d,e,f,g∈ℂ and
a≠0, b≠0, is group involutory.