Description of fast matrix multiplication algorithm: ⟨2×13×16:320⟩

Algorithm type

X⁢Y9⁢Z+9⁢X⁢Y8⁢Z+6⁢X⁢Y7⁢Z+7⁢X2⁢Y4⁢Z2+11⁢X⁢Y6⁢Z+36⁢X2⁢Y3⁢Z2+8⁢X⁢Y5⁢Z+53⁢X2⁢Y2⁢Z2+3⁢X⁢Y4⁢Z+16⁢X⁢Y3⁢Z+40⁢X⁢Y2⁢Z+130⁢X⁢Y⁢ZXY9Z9XY8Z6XY7Z7X2Y4Z211XY6Z36X2Y3Z28XY5Z53X2Y2Z23XY4Z16XY3Z40XY2Z130XYZX*Y^9*Z+9*X*Y^8*Z+6*X*Y^7*Z+7*X^2*Y^4*Z^2+11*X*Y^6*Z+36*X^2*Y^3*Z^2+8*X*Y^5*Z+53*X^2*Y^2*Z^2+3*X*Y^4*Z+16*X*Y^3*Z+40*X*Y^2*Z+130*X*Y*Z

Algorithm definition

The algorithm ⟨2×13×16:320⟩ 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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