Description of fast matrix multiplication algorithm: ⟨21×21×22:5430⟩

Algorithm type

1974⁢X3⁢Y3⁢Z3+306⁢X3⁢Y2⁢Z3+726⁢X3⁢Y3⁢Z+181⁢X3⁢Y2⁢Z2+478⁢X2⁢Y3⁢Z2+172⁢X2⁢Y2⁢Z3+57⁢X3⁢Y2⁢Z+9⁢X3⁢Y⁢Z2+57⁢X2⁢Y3⁢Z+319⁢X2⁢Y2⁢Z2+18⁢X2⁢Y⁢Z3+91⁢X2⁢Y2⁢Z+23⁢X2⁢Y⁢Z2+18⁢X⁢Y3⁢Z+10⁢X⁢Y2⁢Z2+783⁢X⁢Y⁢Z3+2⁢X2⁢Y⁢Z+22⁢X⁢Y2⁢Z+97⁢X⁢Y⁢Z2+87⁢X⁢Y⁢Z1974X3Y3Z3306X3Y2Z3726X3Y3Z181X3Y2Z2478X2Y3Z2172X2Y2Z357X3Y2Z9X3YZ257X2Y3Z319X2Y2Z218X2YZ391X2Y2Z23X2YZ218XY3Z10XY2Z2783XYZ32X2YZ22XY2Z97XYZ287XYZ1974*X^3*Y^3*Z^3+306*X^3*Y^2*Z^3+726*X^3*Y^3*Z+181*X^3*Y^2*Z^2+478*X^2*Y^3*Z^2+172*X^2*Y^2*Z^3+57*X^3*Y^2*Z+9*X^3*Y*Z^2+57*X^2*Y^3*Z+319*X^2*Y^2*Z^2+18*X^2*Y*Z^3+91*X^2*Y^2*Z+23*X^2*Y*Z^2+18*X*Y^3*Z+10*X*Y^2*Z^2+783*X*Y*Z^3+2*X^2*Y*Z+22*X*Y^2*Z+97*X*Y*Z^2+87*X*Y*Z

Algorithm definition

The algorithm ⟨21×21×22:5430⟩ is the projection [[1, 2], [0]] of ⟨22×22×22:5566⟩.

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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