I. Ibragimov

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math.SP2023

Application of Structured Matrices for Solving Hartree-Fock Equations

Ilgis Ibragimov

This work was originally published by the author in 1999 in a book [1] and later became part of the author's doctoral thesis in 1999 [2]. Since the original language of these works…

math.SP2017

The Multi-Dimensional Decomposition with Constraints

Ilgis Ibragimov, Elena Ibragimova

We search for the best fit in Frobenius norm of $A \in C^{m \times n}$ by a matrix product $B C^{*}$ , where $B \in C^{m \times r}$ and $C \in {\mathbb C}^{n \time…