Description of fast matrix multiplication algorithm: ⟨10×15×21:1904⟩

Algorithm type

3⁢X6⁢Y4⁢Z4+141⁢X4⁢Y4⁢Z4+9⁢X6⁢Y2⁢Z2+3⁢X4⁢Y2⁢Z4+3⁢X2⁢Y2⁢Z6+6⁢X3⁢Y4⁢Z2+27⁢X4⁢Y2⁢Z2+342⁢X2⁢Y4⁢Z2+57⁢X2⁢Y2⁢Z4+6⁢X3⁢Y2⁢Z2+2⁢X2⁢Y2⁢Z3+18⁢X3⁢Y2⁢Z+X2⁢Y3⁢Z+365⁢X2⁢Y2⁢Z2+120⁢X⁢Y4⁢Z+6⁢X⁢Y2⁢Z3+20⁢X3⁢Y⁢Z+54⁢X2⁢Y2⁢Z+10⁢X2⁢Y⁢Z2+114⁢X⁢Y2⁢Z2+8⁢X⁢Y⁢Z3+57⁢X2⁢Y⁢Z+264⁢X⁢Y2⁢Z+121⁢X⁢Y⁢Z2+147⁢X⁢Y⁢Z3X6Y4Z4141X4Y4Z49X6Y2Z23X4Y2Z43X2Y2Z66X3Y4Z227X4Y2Z2342X2Y4Z257X2Y2Z46X3Y2Z22X2Y2Z318X3Y2ZX2Y3Z365X2Y2Z2120XY4Z6XY2Z320X3YZ54X2Y2Z10X2YZ2114XY2Z28XYZ357X2YZ264XY2Z121XYZ2147XYZ3*X^6*Y^4*Z^4+141*X^4*Y^4*Z^4+9*X^6*Y^2*Z^2+3*X^4*Y^2*Z^4+3*X^2*Y^2*Z^6+6*X^3*Y^4*Z^2+27*X^4*Y^2*Z^2+342*X^2*Y^4*Z^2+57*X^2*Y^2*Z^4+6*X^3*Y^2*Z^2+2*X^2*Y^2*Z^3+18*X^3*Y^2*Z+X^2*Y^3*Z+365*X^2*Y^2*Z^2+120*X*Y^4*Z+6*X*Y^2*Z^3+20*X^3*Y*Z+54*X^2*Y^2*Z+10*X^2*Y*Z^2+114*X*Y^2*Z^2+8*X*Y*Z^3+57*X^2*Y*Z+264*X*Y^2*Z+121*X*Y*Z^2+147*X*Y*Z

Algorithm definition

The algorithm ⟨10×15×21:1904⟩ is serendipitous tensor product (⟨5×5×7:127⟩ - 2) ⊗ ⟨2×3×3:15⟩ +⟨4×3×3:29⟩.

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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