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Answers
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56
Why do we teach calculus students the derivative as a limit?
24
The role of the mean value theorem (MVT) in first-year calculus.
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Is every real n-manifold isomorphic to a quotient of $\mathbb{R}^n$?
13
Can a mathematical definition be wrong?
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Categories First Or Categories Last In Basic Algebra?
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Interesting Calculus Questions/Exercises
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nontrivial theorems with trivial proofs
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Proof synopsis collection
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Why should one still teach Riemann integration?
9
Homotopic maps out of cofibration sequences
7
Computing homotopies
7
Counterexamples in algebraic topology?
7
What is the intuition behind the Freudenthal suspension theorem
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What does the adjective “natural” actually mean?
6
Why does homotopy behave well with respect to fibrations and homology with respect to cofibrations?
6
The fundamental group of space which has both an H and a co-H structure
6
Decomposing the plane into intervals
6
when cup product is a zero homomorphism
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Advantages of working with CW complexes/spaces over Kan complexes/simplicial sets?
5
Transversality in the proof of the Blakers-Massey Theorem. Is it necessary?
5
$H_2$ of a simply connected Lie group vanishes
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about relative homotopy group
4
Surprising and Useful Physical Intuition for Mathematical Objects
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Question about the fundamental group and homotopy equivalence
4
Writing papers in pre-LaTeX era?
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homotopical immersion of the wedge product of countable many circles in $R^n$
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Do Smash Products and Quotients Commute?
3
Is there a reasonable way to refer to a 23 page article with 28 authors?
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How can I prove that the derived couple of the homotopy exact couple is an invariant?
3
Deeper meanings of barycentric subdivision
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