On Friday, March 15, 2019 at 10:59:06 PM UTC+1, Kwankyu Lee wrote:
>
> Hi,
>
> If the determinant is obviously zero, then you don't need to run the
> computation. If a preprocessing to check zero rows or columns is added,
> then the determinant computation would become slower for usual nontrivia
Hello,
I'm using the current developer version of sage and noticed that when
computing determinants of matrices over polynomial rings and rational
functions, cases where the determinant is easily seen to be zero due to
zero rows or columns can take an unreasonable long time to compute. I
comp
