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QiRenrui's user avatar
QiRenrui's user avatar
QiRenrui
  • Member for 8 years, 2 months
  • Last seen more than 2 years ago
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question
10
Maximum number of triangles no two of which have a common edge
Sep 4, 2018
question
10
Examples of proofs using induction or recursion on a big recursive ordinal
Dec 8, 2019
question
8
Topological vector space textbook with enough applications
Feb 8, 2018
question
3
What is the weakest large cardinal property which is equiconsistent to weak compact cardinal?
Nov 23, 2016
question
2
How to construct "inaccessible hypernatural"?
Jun 6, 2018
question
2
Problem on reading Jech's set theory about forcing (of Lemma 15.19)
Jul 16, 2018
question
2
Continuum hypothesis in nonstandard universe
Nov 21, 2019
answer
1
Inverse Ackermann - primitive recursive or not?
May 22, 2020
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11
Infinitely many perfect squares