Description of fast matrix multiplication algorithm: ⟨2×10×12:186⟩

Algorithm type

2⁢X⁢Y9⁢Z+3⁢X⁢Y8⁢Z+2⁢X2⁢Y5⁢Z2+7⁢X⁢Y7⁢Z+6⁢X2⁢Y4⁢Z2+9⁢X⁢Y6⁢Z+16⁢X2⁢Y3⁢Z2+3⁢X⁢Y5⁢Z+30⁢X2⁢Y2⁢Z2+6⁢X⁢Y4⁢Z+11⁢X⁢Y3⁢Z+21⁢X⁢Y2⁢Z+70⁢X⁢Y⁢Z2XY9Z3XY8Z2X2Y5Z27XY7Z6X2Y4Z29XY6Z16X2Y3Z23XY5Z30X2Y2Z26XY4Z11XY3Z21XY2Z70XYZ2*X*Y^9*Z+3*X*Y^8*Z+2*X^2*Y^5*Z^2+7*X*Y^7*Z+6*X^2*Y^4*Z^2+9*X*Y^6*Z+16*X^2*Y^3*Z^2+3*X*Y^5*Z+30*X^2*Y^2*Z^2+6*X*Y^4*Z+11*X*Y^3*Z+21*X*Y^2*Z+70*X*Y*Z

Algorithm definition

The algorithm ⟨2×10×12:186⟩ is taken from:

John Edward Hopcroft and Leslie R. Kerr. On minimizing the number of multiplication necessary for matrix multiplication. SIAM Journal on Applied Mathematics, 20(1), January 1971. [DOI]

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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