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Mathematics
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user546106
  • Member for 6 years, 5 months
  • Last seen more than a month ago
  • Marseille, France
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question
9
Why do we require quotient to be surjective?
Mar 28, 2018
question
9
$\Bbb R^{\omega}$ in the box topology is not metrizable
Apr 15, 2018
question
3
If $p:E\to B$ is a covering map, then for each $b\in B$ the subspace $p^{-1}(b)$ of $E$ has the discrete topology
May 3, 2018
question
2
Equivalent definitions of quotient map
Mar 27, 2018
question
2
$\{A_n\}$ is a sequence of connected subspace of $X$ s.t. $A_n \cap A_{n+1} \not= \emptyset$ for all $n$. Show that $\cup A_n$ is connected
Apr 16, 2018
question
2
What is the set of homotopy classes of maps of $X$ into $Y$?
Apr 25, 2018
question
2
Is it true that $[\overline{g*\alpha}] = [\bar{g}*\bar{\alpha}]$?
May 1, 2018
question
2
An application of the first (group) isomorphism theorem
Apr 2, 2019
question
2
How to prove this set is a Cantor set?
Feb 8, 2020
question
1
Explanation of a proof of quotient map
Mar 28, 2018