Description of fast matrix multiplication algorithm: ⟨8×18×28:2450⟩

Algorithm type

X8⁢Y12⁢Z8+9⁢X8⁢Y8⁢Z8+4⁢X8⁢Y6⁢Z8+2⁢X4⁢Y14⁢Z4+2⁢X8⁢Y4⁢Z8+11⁢X4⁢Y12⁢Z4+4⁢X2⁢Y16⁢Z2+10⁢X4⁢Y10⁢Z4+10⁢X2⁢Y14⁢Z2+17⁢X4⁢Y8⁢Z4+24⁢X4⁢Y6⁢Z4+10⁢X2⁢Y10⁢Z2+102⁢X4⁢Y4⁢Z4+14⁢X2⁢Y8⁢Z2+24⁢X4⁢Y3⁢Z4+12⁢X2⁢Y7⁢Z2+24⁢X4⁢Y2⁢Z4+128⁢X2⁢Y6⁢Z2+24⁢X⁢Y8⁢Z+60⁢X2⁢Y5⁢Z2+60⁢X⁢Y7⁢Z+166⁢X2⁢Y4⁢Z2+108⁢X2⁢Y3⁢Z2+60⁢X⁢Y5⁢Z+340⁢X2⁢Y2⁢Z2+84⁢X⁢Y4⁢Z+72⁢X2⁢Y⁢Z2+372⁢X⁢Y3⁢Z+384⁢X⁢Y2⁢Z+312⁢X⁢Y⁢ZX8Y12Z89X8Y8Z84X8Y6Z82X4Y14Z42X8Y4Z811X4Y12Z44X2Y16Z210X4Y10Z410X2Y14Z217X4Y8Z424X4Y6Z410X2Y10Z2102X4Y4Z414X2Y8Z224X4Y3Z412X2Y7Z224X4Y2Z4128X2Y6Z224XY8Z60X2Y5Z260XY7Z166X2Y4Z2108X2Y3Z260XY5Z340X2Y2Z284XY4Z72X2YZ2372XY3Z384XY2Z312XYZX^8*Y^12*Z^8+9*X^8*Y^8*Z^8+4*X^8*Y^6*Z^8+2*X^4*Y^14*Z^4+2*X^8*Y^4*Z^8+11*X^4*Y^12*Z^4+4*X^2*Y^16*Z^2+10*X^4*Y^10*Z^4+10*X^2*Y^14*Z^2+17*X^4*Y^8*Z^4+24*X^4*Y^6*Z^4+10*X^2*Y^10*Z^2+102*X^4*Y^4*Z^4+14*X^2*Y^8*Z^2+24*X^4*Y^3*Z^4+12*X^2*Y^7*Z^2+24*X^4*Y^2*Z^4+128*X^2*Y^6*Z^2+24*X*Y^8*Z+60*X^2*Y^5*Z^2+60*X*Y^7*Z+166*X^2*Y^4*Z^2+108*X^2*Y^3*Z^2+60*X*Y^5*Z+340*X^2*Y^2*Z^2+84*X*Y^4*Z+72*X^2*Y*Z^2+372*X*Y^3*Z+384*X*Y^2*Z+312*X*Y*Z

Algorithm definition

The algorithm ⟨8×18×28:2450⟩ is the (Kronecker) tensor product of ⟨2×2×2:7⟩ with ⟨4×9×14:350⟩.

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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