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Mathematics
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WLOG
  • Member for 7 years, 2 months
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question
8
Compute the fundamental group of $\mathbb{C}^*/\Gamma$, where $\Gamma=\{\varphi^n:\varphi(z)=4^nz,n\in\mathbb{Z}\}$
Jul 14, 2020
question
7
Show that the restriction of a quotient map onto a saturated open subset is still a quotient map.
May 24, 2019
question
6
Prove that $(1-\sqrt{-5})\otimes(1+\sqrt{-5})\not=2\otimes 3$ in a specific tensor product.
Jan 24, 2020
question
5
Prove that $x^3+2y^3+4z^3\equiv6xyz \pmod{7} \Rightarrow x\equiv y\equiv z\equiv 0 \pmod{7}$
Oct 20, 2019
question
5
A question about the norm of an element in a field extension.
Oct 22, 2019
question
5
Find a power series that is convergent on the closed unit disk but diverges elsewhere.
Jun 19, 2020
question
5
Classifying the real irreducible representations of a compact torus
Jun 27, 2023
question
4
Is it generally true that $\langle a,b \rangle \cong \langle c,d \rangle\Rightarrow \text{ either }|a|=|c|,|b|=|d| \text{ or } |a|=|d|,|b|=|c|$?
Mar 15, 2019
question
4
Can an injective smooth map from a smooth manifold into another smooth manifold have a discontinuous inverse?
May 23, 2019
question
4
Will orientation-preserving diffeomorphisms of the plane preserve "positively oriented" domains?
Jun 9, 2020