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Countable chain condition for forcing
(ccc)
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Mathematics
Area of mathematics
Foundations of mathematics
Set theory
Forcing
Chain condition for forcing
Created
2026-09-24
Updated
2026-09-24
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A
forcing
order has the
countable chain condition
when every
antichain in a forcing order
is
countable
. Such
forcing
preserves cardinals and
cofinalities
at least
ℵ
1
.
Ancestors
(7)
Chain condition for forcing
Forcing
Set theory
Foundations of mathematics
Area of mathematics
Mathematics
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Nice name for a real
Past exam of the mathematics course of the University of Cambridge
/
2025
/
iii
/
Paper 128
/
2
/
d
/
Solution
Sigma-centered forcing
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