4 ms·
Fascinating. Curious about matrix multiplication and a “particular square shape”. I’m interested if you would care to elaborate on the matrix relationship.
by techbio 7y ago
Fascinating. Curious about matrix multiplication and a “particular square shape”. I’m interested if you would care to elaborate on the matrix relationship.
- kragen 7y agoOh, well, I mean that if you have a 3×3 matrix and a 4×4 matrix, you can't even multiply them. So 4×4 matrices form a monoid under multiplication, as do 3×3 matrices, but matrices in general do not. It turns out that they actually form a much richer structure called a ring when you add in their addition operator as well: https://en.m.wikipedia.org/wiki/Matrix_ring https://en.m.wikipedia.org/wiki/Matrix_ring