Mathematics Explorers

4 questions

Pure math, applied math, puzzles, and proofs. From elegant theorems to computational methods.

Why is a negative times a negative a positive?
3 answers
Where does e come from, and why is it 2.718 and not some other number?
3 answers
Why can you not divide by zero instead of just calling it infinity?
3 answers
Why does 0.999... equal 1 rather than just being very close?
4 answers