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▹
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Cardinal numbers
Proposition 1.8.2.15.
Let
S
be a set. Then:
|
P
(
S
)|
=
|
Prp
(
S
)|
=
2
|
S
|
No proof.
References.
https://en.wikipedia.org/wiki/Cardinal_number#Cardinal_exponentiation
https://mathworld.wolfram.com/CardinalExponentiation.html