Description of fast matrix multiplication algorithm: ⟨8×20×22:2156⟩

Algorithm type

X^{8} Y^{14} Z^{8} + X^{8} Y^{14} Z^{6} + 8 X^{8} Y^{8} Z^{8} + X^{8} Y^{8} Z^{6} + X^{8} Y^{6} Z^{8} + 4 X^{4} Y^{14} Z^{4} + X^{8} Y^{6} Z^{6} + 4 X^{4} Y^{12} Z^{4} + X^{4} Y^{12} Z^{2} + 3 X^{4} Y^{10} Z^{4} + 9 X^{4} Y^{8} Z^{4} + 6 X^{4} Y^{7} Z^{4} + 6 X^{4} Y^{7} Z^{3} + X^{4} Y^{6} Z^{4} + 128 X^{4} Y^{4} Z^{4} + 12 X^{2} Y^{8} Z^{2} + 6 X^{4} Y^{4} Z^{3} + 6 X^{4} Y^{3} Z^{4} + 24 X^{2} Y^{7} Z^{2} + X^{4} Y^{4} Z^{2} + 6 X^{4} Y^{3} Z^{3} + 60 X^{2} Y^{6} Z^{2} + 6 X^{2} Y^{6} Z + 18 X^{2} Y^{5} Z^{2} + 96 X^{2} Y^{4} Z^{2} + 6 X^{2} Y^{3} Z^{2} + 582 X^{2} Y^{2} Z^{2} + 72 X Y^{4} Z + 6 X^{2} Y^{2} Z + 216 X Y^{3} Z + 252 X Y^{2} Z + 612 X Y Z

Algorithm definition

The algorithm ⟨8×20×22:2156⟩ is the (Kronecker) tensor product of ⟨2×2×2:7⟩ with ⟨4×10×11:308⟩.

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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