*draws a sphere on blackboard, adds fur, a head, tail and legs* “…Topologically, it’s a cat.”

Science and Math
Science and Math World

Some topologists refuse to work in non-Hausdorff topological spaces because they say it’s almost like being in the jungle.

I would tell you what I wrote my thesis on, but the eight people who would give a fuck aren’t in the room.

You’re bleeding? On the floor? Who told you you could bleed in my class? Are proofs by induction really that painful?

Please come to this class next week. I made a bet that this wouldn’t scare off more than half of you, and I want to win that beer!

Differential Topology TA: Did you talk about manifolds with boundary in class?

Student: No.

TA: Well, a manifold with a boundary is like a manifold, but with a boundary.