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Jing Zhang's user avatar
Jing Zhang's user avatar
Jing Zhang's user avatar
Jing Zhang
  • Member for 13 years, 11 months
  • Last seen more than 5 years ago
  • Singapore
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Top posts

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13
Borel sets preserved under open maps?
Sep 11, 2012
10
Countable support iteration of proper forcings and the tree property
Feb 15, 2018
10
Martin's Maximum implies stationary/club Chang's conjecture?
Mar 2, 2021
9
Poset dimension and width (Dilworth's theorem)
Feb 5, 2019
9
Cohesive set with degree below non-high Martin-Löf random reals
Aug 21, 2013
9
What are your favorite instructional counterexamples?
Feb 4, 2015
8
Cohesive sets with degree below some non-high 1-generic degrees?
Feb 7, 2013
8
Countable support product of Sacks forcings and selective ultrafilters
Sep 4, 2018
8
Ultrafilters preserved by $\mathbb{P}$ but not by products?
Oct 12, 2016
8
Is the fusion argument on trees of uncountable height consistent?
Jan 17, 2017

Top network posts

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15
A consequence of zero sharp (successor cardinals having countable cofinality)
10
Existence of $\{\omega, \omega+1,...\}$ via the axiom of replacement
10
An exercise in Fine Structure of constructible universe concerning projectum patterns
9
An informal description of forcing.
8
Galois group of irreducible polynomial in a field of characteristic zero in which every element is a perfect square