Dan Ramras's user avatar
Dan Ramras's user avatar
Dan Ramras's user avatar
Dan Ramras
  • Member for 14 years, 1 month
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126 votes

What are some examples of colorful language in serious mathematics papers?

51 votes

Ideas on how to prevent a department from being shut down.

43 votes
Accepted

Are homeomorphic representations isomorphic?

35 votes

What are your favorite instructional counterexamples?

25 votes

What is the equivariant cohomology of a group acting on itself by conjugation?

25 votes

Conceptual reason why the sign of a permutation is well-defined?

22 votes

Nontrivial theorems with trivial proofs

21 votes

Motivation for algebraic K-theory?

21 votes

Examples of common false beliefs in mathematics

20 votes

Is there an alternative characterisation of vector bundles with vanishing characteristic classes?

20 votes

Breakthroughs in mathematics in 2021

19 votes
Accepted

On a proof of the existence of tubular neighborhoods.

19 votes

Grothendieck's Tohoku Paper and Combinatorial Topology

18 votes

Never appeared forthcoming papers

18 votes
Accepted

Fibrations and Cofibrations of spectra are "the same"

15 votes

Maps from 2-Torus to SO(3)

15 votes

Ways to prove the fundamental theorem of algebra

15 votes
Accepted

Status of Quillen's conjecture on elementary abelian p-groups

15 votes

Why do wedges of spheres often appear in combinatorics?

14 votes
Accepted

Is every real vector bundle over the circle necessarily trivial?

13 votes

Are there other nice math books close to the style of Tristan Needham?

13 votes

Third differential in Atiyah Hirzebruch spectral sequence

12 votes

Mathematically mature way to think about Mayer–Vietoris

12 votes

What is your favorite isomorphism?

11 votes

How to know if somebody else is also working on your problem?

11 votes

How to prove that $w_1(E)=w_1(\det E)$?

11 votes

How should I visualise RP^n?

11 votes

Homotopy groups of Fredholm operators

10 votes

Why are spectra indexed over the natural numbers?

9 votes
Accepted

Why are connective spectra called "connective"?