AbstractA matrix is called strictly sign regular if for each k all its k×k minors are nonzero and have the same sign. We study several decompositions of strictly sign regular matrices, including QR decomposition, Schur decomposition, SVD and symmetric-triangular decomposition. Several characterizations are provided
Almost strictly sign regular matrices are sign regular matrices with a special zero pattern and whos...
Almost strictly sign regular matrices are sign regular matrices with a special zero pattern and whos...
AbstractAn m×n matrix A is sign regular if, for each k (1⩽k⩽min{m,n}), all k×k submatrices of A have...
AbstractThe class of nonsingular almost strictly totally positive matrices has been characterized [M...
AbstractAn n×n real matrix is called sign regular if, for each k (1⩽k⩽n), all its minors of order k ...
AbstractAn m×n matrix A is sign regular if, for each k (1⩽k⩽min{m,n}), all k×k submatrices of A have...
Amatrix is sign regular if all its minors of the same order are of the same sign. A very important s...
AbstractThe issue regarding Schur complements of sign regular matrices is rather subtle. It is known...
AbstractA characterization of strict sign-regular matrices is obtained. It is given in an algorithmi...
AbstractWe consider matrix intervals with respect to a certain “checkerboard” partial ordering. We s...
AbstractSeveral characterizations of Jacobi nonsingular sign regular matrices are presented. Moreove...
AbstractA characterization of strict sign-regular matrices is obtained. It is given in an algorithmi...
AbstractA square matrix A=(aij) is called m-banded if aij=0 for all |i-j|>m. Motivated by the result...
Almost strictly sign regular matrices are sign regular matrices with a special zero pattern and whos...
Almost strictly sign regular matrices are sign regular matrices with a special zero pattern and whos...
Almost strictly sign regular matrices are sign regular matrices with a special zero pattern and whos...
Almost strictly sign regular matrices are sign regular matrices with a special zero pattern and whos...
AbstractAn m×n matrix A is sign regular if, for each k (1⩽k⩽min{m,n}), all k×k submatrices of A have...
AbstractThe class of nonsingular almost strictly totally positive matrices has been characterized [M...
AbstractAn n×n real matrix is called sign regular if, for each k (1⩽k⩽n), all its minors of order k ...
AbstractAn m×n matrix A is sign regular if, for each k (1⩽k⩽min{m,n}), all k×k submatrices of A have...
Amatrix is sign regular if all its minors of the same order are of the same sign. A very important s...
AbstractThe issue regarding Schur complements of sign regular matrices is rather subtle. It is known...
AbstractA characterization of strict sign-regular matrices is obtained. It is given in an algorithmi...
AbstractWe consider matrix intervals with respect to a certain “checkerboard” partial ordering. We s...
AbstractSeveral characterizations of Jacobi nonsingular sign regular matrices are presented. Moreove...
AbstractA characterization of strict sign-regular matrices is obtained. It is given in an algorithmi...
AbstractA square matrix A=(aij) is called m-banded if aij=0 for all |i-j|>m. Motivated by the result...
Almost strictly sign regular matrices are sign regular matrices with a special zero pattern and whos...
Almost strictly sign regular matrices are sign regular matrices with a special zero pattern and whos...
Almost strictly sign regular matrices are sign regular matrices with a special zero pattern and whos...
Almost strictly sign regular matrices are sign regular matrices with a special zero pattern and whos...
AbstractAn m×n matrix A is sign regular if, for each k (1⩽k⩽min{m,n}), all k×k submatrices of A have...
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