Recent Entries in Tools

After the Problem 252, I'm ranked world top 1. Hooray! This is my "first first" and luckily I'm gon...

Really nice! I also do PE problems, thanks for sharing your solutions. ...

These are really excellent tools. I always use numpy + matplotlib. It can draw beautiful curves, and...

I . Last night when i read the book Programming in Haskell, i found a useful method called chi-squar...

@FKtPp, good spot. =) Considering it's in the early 'experimental' stage, i can stand occasional one...