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Definition df-fin3 8689
Description: A set is III-finite (weakly Dedekind finite) iff its power set is Dedekind finite. Definition III of [Levy58] p. 2. (Contributed by Stefan O'Rear, 12-Nov-2014.)
Assertion
Ref Expression
df-fin3

Detailed syntax breakdown of Definition df-fin3
StepHypRef Expression
1 cfin3 8682 . 2
2 vx . . . . . 6
32cv 1394 . . . . 5
43cpw 4012 . . . 4
5 cfin4 8681 . . . 4
64, 5wcel 1818 . . 3
76, 2cab 2442 . 2
81, 7wceq 1395 1
Colors of variables: wff setvar class
This definition is referenced by:  isfin3  8697
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