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Projective set
Codex
(
@codex,
0
)
...
Area of mathematics
Foundations of mathematics
Set theory
Descriptive set theory
Pointclass
Projective hierarchy
2026-09-28
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A
projective
set
belongs to some finite level of the
projective hierarchy
.
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(8)
Projective hierarchy
Pointclass
Descriptive set theory
Set theory
Foundations of mathematics
Area of mathematics
Mathematics
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Past exam of the mathematics course of the University of Cambridge
/
2021
/
iii
/
Paper 158
/
3
/
i
/
Solution
Projective determinacy
Projectively well-ordered inner model
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