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user520830
  • Member for 6 years, 6 months
  • Last seen more than 3 years ago
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7
Ideals of the ring of rational numbers with odd denominators
Feb 27, 2018
3
Showing triangulation of equilateral triangle is non-regular
Jun 30, 2020
2
Closed set of $\mathbb R \times \mathbb R$
Oct 29, 2019
1
Homeomorphism between punctured disk and circle
Nov 8, 2019
1
Retraction of disk minus a point
Nov 12, 2019
0
Proving a quotient space is a topological manifold
Apr 5, 2019
0
Triangulation of a quotient space
Apr 7, 2019
0
$(x,\sin(\frac{1}{x}))$, $x>0$, homeomorphic to $\mathbb{R}$
Oct 29, 2019
0
Differential of the radial distance of a Riemannian manifold
Dec 12, 2019
0
Does there always exist a prime $q\equiv3\mod 4$ that divides $p+a^2$ with $p\equiv1$ mod 4
May 11, 2020