Instead of discussing boring things like whether maths were discovered or invented, tell me something cool about maths

There are so many mathematics that I'm unaware of, tell me something

@vaporeon_ oh let me teach you an obscure determinant fact I discovered a couple years ago

@wallhackio Teach me

@vaporeon_ consider matrices that I call "checkerboard matrices". That is, if an element is in the rth row, cth column, and r + c is an even number, then the element is zero

The nonzero elements can be any number you want

Here are two examples:

@vaporeon_ if you take the determinant of a checkerboard matrix, where the matrix is n x n and n is an odd number, the determinant is always zero!