The Strassen $2\times2$ matrix multiplication algorithm arises from the volume form on the 3-dimensional quotient space of the $2\times 2$ matrices by the multiples of identity.

翻译：斯特拉森 $2\times2$ 矩阵乘法算法源于 $2\times 2$ 矩阵模去恒等矩阵倍数所构成的三维商空间上的体积形式。