On a joint $(m,(q_1,...,q_d))$-partial isometries and a joint $m$-invertible $d$-tuple of operators on a Hilbert space

Ould Ahmed Mahmoud Sid Ahmed

The aim of the present paper is, firstly we study the concepts of (m, (q_1, ..., q_d))- partial isometries on a Hilbert space, secondly, we introduce the notion of m- invertibility…