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Elimination-based certificates for triangular equivalence and rank profiles

Abstract : In this paper, we give novel certificates for triangular equivalence and rank profiles. These certificates enable somebody to verify the row or column rank profiles or the whole rank profile matrix faster than recomputing them, with a negligible overall overhead. We first provide quadratic time and space non-interactive certificates saving the logarithmic factors of previously known ones. Then we propose interactive certificates for the same problems whose Monte Carlo verification complexity requires a small constant number of matrix-vector multiplications, a linear space, and a linear number of extra field operations, with a linear number of interactions. As an application we also give an interactive protocol, certifying the determinant or the signature of dense matrices, faster for the Prover than the best previously known one. Finally we give linear space and constant round certificates for the row or column rank profiles.
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https://hal.archives-ouvertes.fr/hal-02191075
Contributor : Clément Pernet <>
Submitted on : Monday, September 9, 2019 - 11:52:19 AM
Last modification on : Wednesday, March 10, 2021 - 3:04:04 PM
Long-term archiving on: : Wednesday, January 8, 2020 - 8:27:23 PM

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Jean-Guillaume Dumas, Erich Kaltofen, David Lucas, Clément Pernet. Elimination-based certificates for triangular equivalence and rank profiles. Journal of Symbolic Computation, Elsevier, 2020, 98, pp.246-269. ⟨10.1016/j.jsc.2019.07.013⟩. ⟨hal-02191075⟩

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