Description of fast matrix multiplication algorithm: ⟨4×24×28:1709⟩

Algorithm type

X2Y24Z2+XY24Z+3XY19Z+4XY18Z+8XY15Z+30X4Y8Z4+23X2Y12Z2+2X2Y11Z2+6XY13Z+24X2Y10Z2+26XY12Z+XY11Z+78X4Y4Z4+94X2Y8Z2+32XY10Z+5X2Y7Z2+13XY9Z+12X4Y2Z4+65X2Y6Z2+75XY8Z+4X2Y5Z2+2XY7Z+8X4Y2Z2+182X2Y4Z2+97XY6Z+13X2Y3Z2+45XY5Z+242X2Y2Z2+129XY4Z+20X2YZ2+106XY3Z+32X2YZ+176XY2Z+150XYZX2Y24Z2XY24Z3XY19Z4XY18Z8XY15Z30X4Y8Z423X2Y12Z22X2Y11Z26XY13Z24X2Y10Z226XY12ZXY11Z78X4Y4Z494X2Y8Z232XY10Z5X2Y7Z213XY9Z12X4Y2Z465X2Y6Z275XY8Z4X2Y5Z22XY7Z8X4Y2Z2182X2Y4Z297XY6Z13X2Y3Z245XY5Z242X2Y2Z2129XY4Z20X2YZ2106XY3Z32X2YZ176XY2Z150XYZX^2*Y^24*Z^2+X*Y^24*Z+3*X*Y^19*Z+4*X*Y^18*Z+8*X*Y^15*Z+30*X^4*Y^8*Z^4+23*X^2*Y^12*Z^2+2*X^2*Y^11*Z^2+6*X*Y^13*Z+24*X^2*Y^10*Z^2+26*X*Y^12*Z+X*Y^11*Z+78*X^4*Y^4*Z^4+94*X^2*Y^8*Z^2+32*X*Y^10*Z+5*X^2*Y^7*Z^2+13*X*Y^9*Z+12*X^4*Y^2*Z^4+65*X^2*Y^6*Z^2+75*X*Y^8*Z+4*X^2*Y^5*Z^2+2*X*Y^7*Z+8*X^4*Y^2*Z^2+182*X^2*Y^4*Z^2+97*X*Y^6*Z+13*X^2*Y^3*Z^2+45*X*Y^5*Z+242*X^2*Y^2*Z^2+129*X*Y^4*Z+20*X^2*Y*Z^2+106*X*Y^3*Z+32*X^2*Y*Z+176*X*Y^2*Z+150*X*Y*Z

Algorithm definition

The algorithm ⟨4×24×28:1709⟩ is serendipitous tensor product (⟨2×6×7:66⟩ - 8) ⊗ ⟨2×4×4:26⟩ +3⟨2×4×8:51⟩ +⟨4×4×4:48⟩.

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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