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Standard fact about iterated forcing

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#set-theory #forcing
214
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Does naturality imply independence from choice?

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#logic #reference-request #set-theory #model-theory
668
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Existence of saturated models of a theory.

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#set-theory #model-theory
173
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"Weak" Ramsey conditions for cardinals

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#set-theory #cardinals #ramsey-theory #large-cardinals
618
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How do you define ordinal exponentiation without induction?

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#set-theory #ordinals
32
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How does the Axiom of Foundation prevent an infinitely descending membership sequence?

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#set-theory
322
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Is there literature on non-computable numbers that can't be even be identified?

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#set-theory #computer-science #real-numbers #computability
165
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amenable ultrafilters

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#logic #set-theory #large-cardinals
237
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Books that summarize the classical application of Zorn’s Lemma.

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#reference-request #set-theory #order-theory #axiom-of-choice
85
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Beginning a Veblen heirarchy with $1 + x$?

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#set-theory #ordinals
81
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what is its definition mathematically of $P(u) $?

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#set-theory
829
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Why is $\omega^{\omega}$ countable?

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#set-theory
225
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$\text{Gal}(\bar{\mathbb{Q}}/\mathbb{Q})$ without choice

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#set-theory #galois-theory
142
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Natural models of Ackermann Set Theory

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#set-theory #model-theory
99
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Validity of a function $g$ such that $g(x)=\{x\}$

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#set-theory

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