Abstract
Let f be a function defined on the set M n×n of all real square matrices of order n. If f is SO(n)-invariant, it has a representation f on R n through the signed singular values of the matrix argument A∈M n×n. A necessary and sufficient condition for the rank 1 convexity of f in terms of f is given.
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Šilhavý, M. On SO(n)-Invariant Rank 1 Convex Functions. Journal of Elasticity 71, 235–246 (2003). https://doi.org/10.1023/B:ELAS.0000005544.24267.8d
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DOI: https://doi.org/10.1023/B:ELAS.0000005544.24267.8d