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KP Hart's user avatar
KP Hart's user avatar
KP Hart
  • Member for 13 years
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I am a general topologist and occasional set theorist

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597
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78
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All Questions Answers
Score Newest
answer
30
Sets with positive Lebesgue measure boundary
May 26, 2010
answer
19
Is this question about US spaces still an open problem?
Oct 27, 2021
answer
16
Is Stone-Čech compactification of 0-dimensional space also 0-dimensional?
Apr 11, 2012
answer
14
What are examples of mathematical concepts named after the wrong people? (Stigler's law)
May 11, 2010
answer
14
Is "compact implies sequentially compact" consistent with ZF?
Jun 23, 2010
answer
13
Independent families of subsets of $\mathbb N$ of size continuum
Dec 14, 2010
answer
12
"Transitivity" of the Stone-Cech compactification
May 12, 2010
answer
12
Are k-spaces named for Kelley?
Apr 17, 2012
answer
12
Does Urysohn's Lemma imply Dependent Choice?
Jan 23
question
11
Earliest diagonal proof of the uncountability of the reals.
May 8, 2010
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6
The domain of $f(x) = \ln (x + \sqrt{1+ x^2}).$

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