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Mathematics
Almanzoris's user avatar
Almanzoris's user avatar
Almanzoris's user avatar
Almanzoris
  • Member for 1 year, 3 months
  • Last seen this week
  • Spain.
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answer
6
Example of a T2 space that is not T3.
Aug 2
answer
6
Every hereditarily Lindelöf scattered space is countable
Aug 6
question
5
Examples of spaces that are $T_5$ but aren't countably paracompact.
Aug 27
question
3
Every regular, scattered and Lindelöf space with countable pseudocharacter has countable cardinality.
Aug 4
answer
2
Open subsets of a set
Aug 1
answer
2
Is there a topology on the countable set which makes the space is not first countable but has countable pseudocharacter?
Aug 23
answer
2
Confusion about Open Sets and Closed Sets
Aug 26
answer
2
Definition clarification on topology regarding closed set
Sep 4
answer
2
Detail about an answer of Any open subset of $\mathbb{R}$ is a countable union of disjoint open intervals
Sep 12
question
1
Is the weak topology on the infinite-dimensional separable Hilbert space Hereditarily Lindelöf?
Aug 24