Miniversal deformations of matrices of bilinear forms |
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Authors: | Andrii R. Dmytryshyn Vyacheslav Futorny Vladimir V. Sergeichuk |
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Affiliation: | 1. Department of Computing Science and HPC2N, Umeå University, SE-901 87 Umeå, Sweden;2. Department of Mathematics, University of São Paulo, Brazil;3. Institute of Mathematics, Tereshchenkivska 3, Kiev, Ukraine |
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Abstract: | Arnold [V.I. Arnold, On matrices depending on parameters, Russian Math. Surveys 26 (2) (1971) 29–43] constructed miniversal deformations of square complex matrices under similarity; that is, a simple normal form to which not only a given square matrix A but all matrices B close to it can be reduced by similarity transformations that smoothly depend on the entries of B. We construct miniversal deformations of matrices under congruence. |
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