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Published in 2017 at "Linear Algebra and its Applications"
DOI: 10.1016/j.laa.2016.12.037
Abstract: Abstract In this paper we characterize additive maps between tensor spaces that send decomposable tensors to decomposable tensors. As an application, we classify all additive maps from tensor products of spaces of rectangular matrices to…
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Keywords:
tensor products;
related results;
additive decomposability;
decomposability preservers ... See more keywords
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Published in 2021 at "Linear Algebra and its Applications"
DOI: 10.1016/j.laa.2020.10.014
Abstract: Abstract In this paper we study preserver transformations between positive definite cones in operator algebras relating the spectral geometric mean of Fiedler and Ptak. We also discuss kinds of structural similarities and dissimilarities between the…
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Keywords:
related spectral;
geometric mean;
spectral geometric;
preservers related ... See more keywords