Description of fast matrix multiplication algorithm: ⟨3×7×9:141⟩

Algorithm type

6⁢X2⁢Y3⁢Z2+42⁢X2⁢Y2⁢Z2+3⁢X⁢Y4⁢Z+6⁢X3⁢Y⁢Z+12⁢X2⁢Y2⁢Z+11⁢X⁢Y3⁢Z+6⁢X⁢Y⁢Z3+26⁢X2⁢Y⁢Z+25⁢X⁢Y2⁢Z+4⁢X⁢Y⁢Z6X2Y3Z242X2Y2Z23XY4Z6X3YZ12X2Y2Z11XY3Z6XYZ326X2YZ25XY2Z4XYZ6*X^2*Y^3*Z^2+42*X^2*Y^2*Z^2+3*X*Y^4*Z+6*X^3*Y*Z+12*X^2*Y^2*Z+11*X*Y^3*Z+6*X*Y*Z^3+26*X^2*Y*Z+25*X*Y^2*Z+4*X*Y*Z

Algorithm definition

The algorithm ⟨3×7×9:141⟩ 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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