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5
about relative homotopy group
1
Blackbox Theorems
3
Characterizing the rationalization of spaces.
1
uniqueness of $f$-localization
1
The most general context of Mather’s Cube Theorems
3
Moore path space.
1
[v_4,l_4]=?, v_4 is the Hopf map in \pi_7(S^4) and l_4 is the generator of \pi_4(S^4)
0
Limits in category theory and analysis
3
The Higman group
3
Examples where it’s useful to know that a mathematical object belongs to some family of objects
2
looking for a book on banach manifolds
9
Homotopic maps out of cofibration sequences
5
$H_2$ of a simply connected Lie group vanishes
2
Techniques for computing cup products in singular cohomology
4
Surprising and Useful Physical Intuition for Mathematical Objects
2
Is there the Whitehead theorem for cohomology theory?
7
What does the adjective “natural” actually mean?
6
The fundamental group of space which has both an H and a co-H structure
2
homotopy pushout of spaces homotopic to finite CW complexes
6
Why does homotopy behave well with respect to fibrations and homology with respect to cofibrations?
1
Lifting relative homotopies between maps $X\to Y/B$ when $B$ is contractible
7
What is the intuition behind the Freudenthal suspension theorem
7
Counterexamples in algebraic topology?
5
Transversality in the proof of the Blakers-Massey Theorem. Is it necessary?
1
vanishing of $\pi_2$ and $H_2$
12
Interesting Calculus Questions/Exercises
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Why should one still teach Riemann integration?
7
Computing homotopies
3
homotopy of sphere maps
1
notation for finite sequence with one element is removed
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