Description of fast matrix multiplication algorithm: ⟨2×17×19:494⟩

Algorithm type

X⁢Y11⁢Z+5⁢X⁢Y10⁢Z+19⁢X⁢Y9⁢Z+5⁢X⁢Y8⁢Z+2⁢X⁢Y7⁢Z+6⁢X⁢Y6⁢Z+8⁢X2⁢Y3⁢Z2+6⁢X⁢Y5⁢Z+144⁢X2⁢Y2⁢Z2+3⁢X⁢Y4⁢Z+6⁢X⁢Y3⁢Z+20⁢X⁢Y2⁢Z+269⁢X⁢Y⁢ZXY11Z5XY10Z19XY9Z5XY8Z2XY7Z6XY6Z8X2Y3Z26XY5Z144X2Y2Z23XY4Z6XY3Z20XY2Z269XYZX*Y^11*Z+5*X*Y^10*Z+19*X*Y^9*Z+5*X*Y^8*Z+2*X*Y^7*Z+6*X*Y^6*Z+8*X^2*Y^3*Z^2+6*X*Y^5*Z+144*X^2*Y^2*Z^2+3*X*Y^4*Z+6*X*Y^3*Z+20*X*Y^2*Z+269*X*Y*Z

Algorithm definition

The algorithm ⟨2×17×19:494⟩ 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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