Laderman matrix multiplication algorithm can be constructed using Strassen algorithm and related tensor's isotropies

A non-commutative algorithm for multiplying 5x5 matrices using 99 multiplications

“…Remark 1 -The free parameter ℓ used in ( 2) -(125) came from the utilisation of Winograd variant of Strassen algorithms (see [1]) as presented in [13].…”

“…The interested reader could found in [13] a brief description of the framework (trilinear form, etc.) evoked above and in [12] the complete description of the used algorithms.…”