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Mathematics
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John
  • Member for 13 years, 7 months
  • Last seen more than a week ago
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question
57
Do circles divide the plane into more regions than lines?
Sep 4, 2012
answer
23
What are some examples of a mathematical result being counterintuitive?
May 4, 2012
question
19
What is the smallest cardinality of a Kuratowski 14-set?
Aug 23, 2012
question
18
Is the Euler characteristic of $\mathbb{R}^n$ $1$ or $(-1)^n$?
Sep 10, 2012
answer
15
Do circles divide the plane into more regions than lines?
Sep 4, 2012
question
13
How to find a homeomorphism $\mathbb{R}^{n}\rightarrow\mathbb{R}^{n}$ having certain properties
Sep 13, 2013
question
12
Problem 3-38 in Spivak´s Calculus on Manifolds
Nov 27, 2012
question
11
Is there a purely topological proof that a certain topological space derived from logical compactness is compact?
May 20, 2022
answer
10
What is the smallest cardinality of a Kuratowski 14-set?
Aug 24, 2012
answer
8
Closure of a certain subset in a compact topological group
Jul 26, 2013

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Should we allow ongoing journal questions?