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Mathematics
Noel Lundström's user avatar
Noel Lundström's user avatar
Noel Lundström's user avatar
Noel Lundström
  • Member for 6 years, 8 months
  • Last seen this week
  • Göteborg, Sverige
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I guess you could say I like math

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24
What exactly is an arrow in a category?
Mar 28, 2020
answer
16
What exactly is sheafification?
Feb 22, 2021
question
16
What manifolds $M$ have a $CW-$structure so that the $n-$skeleton, $M_n$, is a manifold for all $n$ aswell?
Feb 15, 2021
answer
9
Show that the orthogonal group acts transitively on the sphere $S^n.$
Mar 26, 2020
answer
8
For any ring $R$, prove that $R$-$\mathbf{Mod}$ has no subobject classifier.
Feb 2, 2020
answer
8
Is the induced map of a connected subspace on $0$th homology always injective?
May 10, 2020
question
8
Understanding suspension in the model category of chain complexes.
May 26, 2020
answer
7
Why is the collection of isomorphism classes of principal G bundles a set?
Aug 10, 2021
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7
Topology of fundamental groupoid.
Mar 7, 2021
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7
Map from sphere to torus
May 6, 2020
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For what topological groups $G$ can we take $EG \rightarrow BG$ to be of the form $S^{\infty} \rightarrow BG$?
7
Generalization of familiar theorem about singular homology to general model category