Mathematics
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C7X
  • Member for 1 year, 9 months
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46
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13
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56
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31
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53
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10
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Top posts
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All Questions Answers
Score Newest
answer
8
Can someone explain TREE(3) in extremely simple terms?
Aug 28
question
7
How much can $\Delta_0$-definable set functions increase rank?
Apr 27, 2022
answer
4
Is it possible to formalize all mathematics in terms of ordinals only?
Mar 3, 2022
question
3
Iterated $\Pi^1_1$-reflection and non-Gandiness underrepresented in ordinal analyses?
Mar 4, 2022
question
3
Is there a model of KP with no $\emptyset'$ ordinal notation for the Bachmann-Howard ordinal?
Aug 19
question
3
Stronger notion of ultrafinite incompleteness
Aug 22
answer
3
Are the ordinals $\alpha$ so that the stable ordinals $< \alpha$ are unbounded in $\alpha$ equivalent to the nonprojectible ordinals $\alpha$
Feb 28, 2022
answer
3
Why do we need ordinal representation systems?
Mar 9, 2022
answer
3
Does $\Sigma_1$-separation over $L_\alpha$ implies admissibility?
Sep 27, 2022
question
2
Definitions of nice recursive analogues of cofinality?
May 15, 2022
Top network posts
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7
Progress on determining which partial orders embed into the rationals
5
How closely do ordinal collapsing functions relate to Mostowski collapse?
5
Iterated $\Pi^1_1$-reflection and non-Gandiness underrepresented in ordinal analyses?
5
Smallest ordinal modelling $\aleph_1$?
5
Do all limit $\alpha \in \omega_1^L$ satisfy $L_\alpha \models V=HC$?

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