1. Not only is math beautiful, it is $\int e^{xy}$.
2. Why did the chicken cross the Möbius Strip?
3. I find your lack of math disturbing.
4. $\sqrt{-1}$ $2^{3}$ $\sum$ $\pi$…and it was delicious.
5. Mathematical puns are the first sine of madness.
6. If I’ve told you $n$ times, I’ve told you $n+1$ times…
7. I have an imaginary friend $\sqrt{-1}$.
8. A mathematician is a machine for turning coffee into theorems. – Alfréd Rényi
9. Instant mathematician just add coffee.
10. Five out of four people don’t understand fractions.
11. Old mathematicians never die. They just lose some of their functions.
12. A topologist is a person who doesn’t know the difference between a coffee cup and a doughnut.
13. Mathematicians have problems.
16. $i^{2}$, I keep it real.
21. What is the volume of a disk with radius $z$ and height $a$? $Pi \cdot z \cdot z \cdot a$.