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The study of the properties of real and complex matrices that are more close to analysis and operator theory. For instance: the properties of positive definite matrices, matrix inequalities, perturbation analysis, matrix functions, inequalities between eigenvectors and singular values, majorization.

5 votes
2 answers
837 views

Optimization version of the Sylvester equation

The Sylvester equation is a matrix equation of the form $AX-XB=C,$ where $A,B,C$ are given matrices of dimension $m\times m,n\times n$ and $m\times n$ and $X$ is an unknown matrix of dimension $m\time …
Uday's user avatar
  • 2,239
3 votes
2 answers
185 views

Triangularizing a function matrix with smooth eigenvlaues

Given a matrix with function entries, which are smooth and homogeneous, and having smooth eigenvalues, can we find a conjugating matrix with smooth and homogeneous entries that triangularize the given …
Uday's user avatar
  • 2,239
6 votes
2 answers
418 views

Triangularizing a matrix with function entries

Hi Everybody! Given a matrix, with smooth functions as arguments is there any result which say about its triangularization? I know that, the question is in affirmative for diagonalizing a matrix whi …
Uday's user avatar
  • 2,239