Description of fast matrix multiplication algorithm: ⟨4×12×18:585⟩

Algorithm type

3⁢X4⁢Y8⁢Z4+12⁢X4⁢Y6⁢Z4+12⁢X4⁢Y4⁢Z4+18⁢X2⁢Y8⁢Z2+48⁢X2⁢Y6⁢Z2+24⁢X⁢Y8⁢Z+48⁢X2⁢Y4⁢Z2+48⁢X⁢Y6⁢Z+24⁢X2⁢Y3⁢Z2+60⁢X2⁢Y2⁢Z2+60⁢X⁢Y4⁢Z+48⁢X⁢Y3⁢Z+108⁢X⁢Y2⁢Z+72⁢X⁢Y⁢Z3X4Y8Z412X4Y6Z412X4Y4Z418X2Y8Z248X2Y6Z224XY8Z48X2Y4Z248XY6Z24X2Y3Z260X2Y2Z260XY4Z48XY3Z108XY2Z72XYZ3*X^4*Y^8*Z^4+12*X^4*Y^6*Z^4+12*X^4*Y^4*Z^4+18*X^2*Y^8*Z^2+48*X^2*Y^6*Z^2+24*X*Y^8*Z+48*X^2*Y^4*Z^2+48*X*Y^6*Z+24*X^2*Y^3*Z^2+60*X^2*Y^2*Z^2+60*X*Y^4*Z+48*X*Y^3*Z+108*X*Y^2*Z+72*X*Y*Z

Algorithm definition

The algorithm ⟨4×12×18:585⟩ is the (Kronecker) tensor product of ⟨2×3×3:15⟩ with ⟨2×4×6:39⟩.

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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