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location Vienna, Austria
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visits member for 3 years, 10 months
seen 17 mins ago

Random praise for me:

You might see some necro-like-bumps from me. I'm trying to slowly edit/delete all my HINT answers from the site. I am also trying to stay away from giving hint answers in the future.

The last 10 answers I've posted:

  1. Zero sets in Mrówka spaces (22-Nov-2014)
  2. Regarding functions on $\omega_1$ (10-Nov-2014)
  3. Possible behaviours of the cofinality-of-neighbourhood function for topological spaces $X$ that are connected. (6-Nov-2014)
  4. Example of a $T_1$ space that does not have the property that every compact subspace of $X$ is closed. (5-Nov-2014)
  5. Why wouldn't someone accept Gentzen's consistency proof? (15-Oct-2014)
  6. Consistency of restricted forms of Martin's Axiom with the negation of the Continuum Hypothesis (8-Oct-2014)
  7. Spaces where all compact subsets are closed (2-Oct-2014)
  8. Is there always an equivalent metric which is not complete? (24-Sep-2014)
  9. Mary Ellen Rudin's proof that all metric space are paracompact (3-Sep-2014)
  10. Operators on the family of all subsets of a topological space that maybe generates a base for these family. (28-Aug-2014)

Yes, my answer-posting rate has slowed to a crawl. But I am generally happier with the questions I've been answering (and the answers I'm giving).

(Avatar image adapted from Lun-Yi Tsai's Surprised Again on the Diagonal, as found here.)


Nov
22
answered Zero sets in Mrówka spaces
Nov
10
answered Regarding functions on $\omega_1$
Nov
6
answered Possible behaviours of the cofinality-of-neighbourhood function for topological spaces $X$ that are connected.
Nov
5
answered Example of a $T_1$ space that does not have the property that every compact subspace of $X$ is closed.
Oct
15
answered Why wouldn't someone accept Gentzen's consistency proof?
Oct
8
answered Consistency of restricted forms of Martin's Axiom with the negation of the Continuum Hypothesis
Oct
2
answered Spaces where all compact subsets are closed
Sep
24
answered Is there always an equivalent metric which is not complete?
Sep
3
answered Mary Ellen Rudin's proof that all metric space are paracompact
Aug
28
answered Operators on the family of all subsets of a topological space that maybe generates a base for these family.
Aug
26
answered A locally metrizable, Lindelöf Hausdorff space that is not metrizable
Aug
24
answered Equality of sets of local isomorphisms between relations
Aug
22
answered A countable, compact KC-subspace of a hereditarily Lindelöf minimal KC-space
Aug
20
answered The Cantor set is not strong measure zero
Aug
17
answered Countably local finiteness and a related(?) property
Aug
1
answered Can every uncountable subset of $\mathbb R$ be split up this way?
Jul
31
answered Prove that $\mathbb{R}^{n}-A$ with the standard topology is connected where $n \geq 2$ and $A \subset \mathbb{R}^{n}$ is countable.
Jul
29
answered Constructing semi-regular spaces
Jul
22
answered If $A=[0, 1] \times (0, 1)$, which is a subspace of $I^2 = [0, 1] \times [0, 1],$ how are the sets $U_x = \{x\} \times (0, 1)$ open in $A$?
Jul
21
answered Is there an uncountable scattered subset of $\mathbb R$?