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Answers
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If you break a stick at two points chosen uniformly, the probability the three resulting sticks form a triangle is 1/4. Is there a “nice” proof of this fact?
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Colloquial catchy statements encoding serious mathematics
29
Periods and commas in mathematical writing
44
Learning Topology
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Definition of “simplicial complex”
21
Spectral sequences: opening the black box slowly with an example
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Homotopy groups of Lie groups
29
Parallelizability of the Milnor’s exotic spheres in dimension 7
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Why do finite homotopy groups imply finite homology groups?
11
Deeper meanings of barycentric subdivision
18
Fundamental group of the line with the double origin.
25
Why do wedges of spheres often appear in combinatorics?
9
CW-structures and Morse functions: a reference request
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Why do the homology groups capture holes in a space better than the homotopy groups?
8
Textbook for undergraduate course in geometry
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Simplicial complexes vs. geometric realization of abstract simplicial complexes
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Are there pairs of highly connected finite CW-complexes with the same homotopy groups?
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Calculating cup products using cellular cohomology
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Intuition behind Thom class
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Commutator subgroup of $\Gamma(2).$
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distance formula in Farey graph?
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Survey articles on homotopy groups of spheres
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Points on a sphere
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The Wedge Sum of path connected topological spaces
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Computing the structure of the group completion of an abelian monoid, how hard can it be?
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Good reference for homology of $K(\mathbb{Z}, 2n)$?
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When are the homology and cohomology Hopf algebras of topological groups equal?
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Fibers of fibrations of a 3-manifold over $S^1$
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An elementary proof that the degree of a map of spheres determines its homotopy type
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Spheres over rational numbers and other fields
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