Mathematics
Dan Saattrup Nielsen's user avatar
Dan Saattrup Nielsen's user avatar
Dan Saattrup Nielsen's user avatar
Dan Saattrup Nielsen
  • Member for 10 years, 6 months
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About

Senior AI Specialist at the Alexandra Institute.

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All Questions Answers
Score Newest
question
8
AC iff $P(\delta)$ can be well-ordered for all $\delta\in{\bf On}$ [duplicate]
Jul 29, 2013
question
8
What determines when an inner model is "canonical"?
Dec 26, 2013
answer
8
Fundamental group of a triangle with the three vertices identified?
Jan 15, 2017
question
6
Ordinal arithmetic exercise in Kunen
Jul 26, 2013
question
6
What is gained by internalizing LST (the language of set theory)?
Mar 7, 2014
question
5
$\sum_{\alpha<\omega_2}|\alpha|^{\aleph_0}=\aleph_2\cdot\aleph_1^{\aleph_0}$
May 17, 2013
question
3
Example of a $\kappa$-long sequence of disjoint club subsets of regular cardinal $\kappa$
May 30, 2013
question
3
Is there an alternative characterisation of countably closed cardinals?
Aug 1, 2017
answer
3
Category-theoretic properties of cardinals
Nov 10, 2016
answer
3
How much set theory does the category of sets remember?
Nov 10, 2016
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17
Why did Gödel name his constructible universe $L$?
16
What is the motivation behind inner model theory?
11
Does $\diamondsuit(\kappa)$ provably hold at Woodins or inaccessible Jónssons $\kappa$?
10
Does/can threadability imply reflection principles?
8
Showing that $\alpha$ isn't a cardinal in $J_{\alpha+1}^{\vec E}$ for a fine extender sequence $\vec E$

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