A new rational tensor decomposition multiplies 4x4 matrices in 48 scalar multiplications, extending the record from complex to rational coefficients and to rings with 1/2.
A non-commutative algorithm for multiplying a 3 × 4 matrix by a 4 × 7 matrix using 63 non-complex multiplications
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A non-commutative algorithm for multiplying 4x4 matrices using 48 non-complex multiplications
A new rational tensor decomposition multiplies 4x4 matrices in 48 scalar multiplications, extending the record from complex to rational coefficients and to rings with 1/2.