Description of fast matrix multiplication algorithm: ⟨6×7×7:212⟩

Algorithm type

3 X^{4} Y^{4} Z^{4} + X^{6} Y^{2} Z^{2} + 3 X^{4} Y^{3} Z^{3} + 3 X^{3} Y^{3} Z^{4} + X^{2} Y^{6} Z^{2} + X^{2} Y^{4} Z^{4} + X^{2} Y^{2} Z^{6} + X^{5} Y^{2} Z^{2} + 2 X^{2} Y^{5} Z^{2} + X^{2} Y^{2} Z^{5} + X^{4} Y^{2} Z^{2} + 2 X^{3} Y^{3} Z^{2} + 2 X^{2} Y^{4} Z^{2} + 2 X^{2} Y^{3} Z^{3} + 3 X^{2} Y^{3} Z^{2} + X^{2} Y^{3} Z + 47 X^{2} Y^{2} Z^{2} + 3 X Y^{3} Z^{2} + 14 X^{3} Y Z + 11 X^{2} Y^{2} Z + 3 X^{2} Y Z^{2} + 16 X Y^{3} Z + 11 X Y^{2} Z^{2} + 13 X Y Z^{3} + 13 X^{2} Y Z + 27 X Y^{2} Z + 12 X Y Z^{2} + 14 X Y Z

Algorithm definition

The algorithm ⟨6×7×7:212⟩ is taken from:

Andrew I. Perminov. FastMatrixMultiplication, GitHub, February 2026. [ GitHub repository ]

Algorithm description

These encodings are given in compressed text format using the maple computer algebra system. In each cases, the last line could be understood as a description of the encoding with respect to classical matrix multiplication algorithm. As these outputs are structured, one can construct easily a parser to its favorite format using the maple documentation without this software.

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