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Associativity of ordinal addition
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Mathematics
Area of mathematics
Foundations of mathematics
Set theory
Ordinal
Ordinal addition
Created
2026-09-24
Updated
2026-09-24
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For all
ordinals
α
,
β
,
γ
,
(
α
+
β
)
+
γ
=
α
+
(
β
+
γ
)
.
(1)
This follows by
transfinite induction
on
γ
from the
recursive definition
of
ordinal addition
.
Ancestors
(7)
Ordinal addition
Ordinal
Set theory
Foundations of mathematics
Area of mathematics
Mathematics
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Past exam of the mathematics course of the University of Cambridge
/
2005
/
ii
/
Paper 2
/
16F
/
i
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2006
/
ii
/
Paper 2
/
16H
/
c
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2022
/
ii
/
Paper 2
/
16F
/
b
/
iv
/
Solution
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