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How does Borelness overlap with definability, computability, or constructiveness?

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#logic #computability #descriptive-set-theory
95
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Question about a defined function in D.Marker Model Theory book.

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#logic #model-theory #descriptive-set-theory
130
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An application of Descriptive set theory in Model theory.

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#logic #model-theory #descriptive-set-theory
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Is the product of Polish spaces Polish?

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#general-topology #descriptive-set-theory
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What is the generating set of the Vietoris topology?

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#general-topology #set-theory #descriptive-set-theory
246
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Constructing a choice function in a complete & separable metric space

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#general-topology #axiom-of-choice #descriptive-set-theory
525
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Is $A$ a Borel set?

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#reference-request #measure-theory #descriptive-set-theory
566
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From lightface $\Sigma^1_1$ to boldface $\mathbf\Delta^1_1$

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#logic #computability #descriptive-set-theory
607
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Which are "big theorems" of descriptive set theory?

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#reference-request #logic #set-theory #descriptive-set-theory #large-cardinals
168
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How to I "transfer" a topology via a bijection?

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#general-topology #descriptive-set-theory
87
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Why is this set nonempty? (Kechris, If X if comp. metriz., so is K(X))

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#general-topology #descriptive-set-theory
1.7k
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What are some good intuitions for understanding Souslin's operation $\mathcal{A}$?

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#general-topology #measure-theory #set-theory #intuition #descriptive-set-theory
4.7k
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Show that the following are Borel Sets

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#real-analysis #descriptive-set-theory
193
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Terminal Paths in Kleene's O

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#computability #descriptive-set-theory
2.7k
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R subset and Borel set

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#descriptive-set-theory

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