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Mathematics
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Jakobian's user avatar
Jakobian's user avatar
Jakobian
  • Member for 8 years, 1 month
  • Last seen more than a week ago
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I'm not very creative.

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49
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Top posts
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49
Are these figures homeomorphic?
Feb 14
20
Does $\sum _{n=1}^{\infty }\frac{\left|\sin\left(n\right)\right|}{n}$ converge?
Jun 2, 2018
18
Example of a point that is not the limit of any sequence in a connected topological space
Feb 15, 2024
15
Does locally compact, locally connected, connected metrizable space admit a metric with connected balls?
Aug 25, 2023
15
Is $\mathcal{A}(\mathfrak{c})$ independent of $\mathrm{ZFC}$?
May 10
15
Zero distance between a closed set and a bounded closed set which are disjoint in a metric space
Nov 2, 2023
14
Prove that $\left(1+2^{-1+b^{\left(\frac{1}{b-1}\right)}}\right)^b < 1+2^{-1+b^{\left(\frac{b}{b-1}\right)}}$ for all $b>2$.
Jul 3, 2020
13
Is every compact Hausdorff space a continuous image of $\{0,1\}^I$?
Apr 9
13
Adjunction of pointed maps is a homeomorphism?
Dec 4, 2020
11
Why is $\text{Homeo}_p(X)$ not a topological group for $X = \mathbb{R}^2$?
Jul 11, 2023
Top network posts
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22
Are $\beta \mathbb{Q}$ and $\beta(\beta\mathbb{Q}\setminus\mathbb{Q})$ homeomorphic?
13
Is "All hyperreal fields $C(\mathbb{R})/M$ are isomorphic" independent of ZFC?
11
Spaces with every compactification $0$-dimensional which aren't locally compact
9
Does cocountable topology on $\mathbb{R}$ have the $2$-Markov Menger property?
9
Are $\beta \mathbb{Q}$ and $\beta(\beta\mathbb{Q}\setminus\mathbb{Q})$ homeomorphic?