H. El-Azhar

activity

20182021

most citedThe quintic complex moment problem

3 citations · 4 across the 3 of their papers we have counts for

collaborators

3 papers

math.FA2021★ 1 cited

Square root problem and Subnormal Aluthge transforms

Hamza El Azhar, Abdelouahab Hanine, Kaissar Idrissi +1

For a non negative measure $μ$ with $p$ atoms, we study the relation between the Square Root Problem of $μ$ and the problem of subnormality of $W ~_{μ}$ the Aluthge transform…

math.FA2019★ 3 cited

The quintic complex moment problem

Hamza El Azhar, Ayoub Harrat, Kaissar Idrissi +1

Let $γ^{(m)} \equiv {γ_{ij}}_{0 \leq i + j \leq m}$ be a given complex-valued sequence. The truncated complex moment problem (TCMP in short) involves determining necessary and s…

math.FA2018

A note on weak positive matrices, finite mass measures and hyponormal weighted shifts

H. El Azhar, K. Idrissi, E. H. Zerouali

We study the class of Hankel matrices for which the $k \times k$ -block-matrices are positive semi-definite. We prove that a $k \times k$ -block-matrix has non zero determinant if and…