An algebraic model for linear code equivalence is constructed using invariant rational functions on the Grassmannian under diagonal action, producing high-degree polynomials satisfied by the permutation matrix.
Springer (2008)
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Linear Code Equivalence via Pl\"ucker Coordinates
An algebraic model for linear code equivalence is constructed using invariant rational functions on the Grassmannian under diagonal action, producing high-degree polynomials satisfied by the permutation matrix.