Description of fast matrix multiplication algorithm: ⟨4×28×32:2288⟩

Algorithm type

4⁢X⁢Y21⁢Z+8⁢X⁢Y18⁢Z+12⁢X2⁢Y14⁢Z2+4⁢X⁢Y15⁢Z+24⁢X2⁢Y12⁢Z2+16⁢X⁢Y14⁢Z+48⁢X4⁢Y6⁢Z4+12⁢X2⁢Y10⁢Z2+36⁢X⁢Y12⁢Z+16⁢X2⁢Y9⁢Z2+96⁢X4⁢Y4⁢Z4+12⁢X2⁢Y8⁢Z2+16⁢X⁢Y10⁢Z+20⁢X⁢Y9⁢Z+156⁢X2⁢Y6⁢Z2+16⁢X⁢Y8⁢Z+20⁢X⁢Y7⁢Z+188⁢X2⁢Y4⁢Z2+140⁢X⁢Y6⁢Z+80⁢X2⁢Y3⁢Z2+20⁢X⁢Y5⁢Z+364⁢X2⁢Y2⁢Z2+100⁢X⁢Y4⁢Z+168⁢X⁢Y3⁢Z+372⁢X⁢Y2⁢Z+340⁢X⁢Y⁢Z4XY21Z8XY18Z12X2Y14Z24XY15Z24X2Y12Z216XY14Z48X4Y6Z412X2Y10Z236XY12Z16X2Y9Z296X4Y4Z412X2Y8Z216XY10Z20XY9Z156X2Y6Z216XY8Z20XY7Z188X2Y4Z2140XY6Z80X2Y3Z220XY5Z364X2Y2Z2100XY4Z168XY3Z372XY2Z340XYZ4*X*Y^21*Z+8*X*Y^18*Z+12*X^2*Y^14*Z^2+4*X*Y^15*Z+24*X^2*Y^12*Z^2+16*X*Y^14*Z+48*X^4*Y^6*Z^4+12*X^2*Y^10*Z^2+36*X*Y^12*Z+16*X^2*Y^9*Z^2+96*X^4*Y^4*Z^4+12*X^2*Y^8*Z^2+16*X*Y^10*Z+20*X*Y^9*Z+156*X^2*Y^6*Z^2+16*X*Y^8*Z+20*X*Y^7*Z+188*X^2*Y^4*Z^2+140*X*Y^6*Z+80*X^2*Y^3*Z^2+20*X*Y^5*Z+364*X^2*Y^2*Z^2+100*X*Y^4*Z+168*X*Y^3*Z+372*X*Y^2*Z+340*X*Y*Z

Algorithm definition

The algorithm ⟨4×28×32:2288⟩ is the (Kronecker) tensor product of ⟨2×4×4:26⟩ with ⟨2×7×8:88⟩.

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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