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Definition df-nnc 4379
Description: Define the finite cardinals. Definition from [Rosser] p. 275. (Contributed by SF, 12-Jan-2015.)
Assertion
Ref Expression
df-nnc Nn 0c 1c
Distinct variable group:   ,

Detailed syntax breakdown of Definition df-nnc
StepHypRef Expression
1 cnnc 4373 . 2 Nn
2 c0c 4374 . . . . . 6 0c
3 vb . . . . . . 7
43cv 1641 . . . . . 6
52, 4wcel 1710 . . . . 5 0c
6 vy . . . . . . . . 9
76cv 1641 . . . . . . . 8
8 c1c 4134 . . . . . . . 8 1c
97, 8cplc 4375 . . . . . . 7 1c
109, 4wcel 1710 . . . . . 6 1c
1110, 6, 4wral 2614 . . . . 5 1c
125, 11wa 358 . . . 4 0c 1c
1312, 3cab 2339 . . 3 0c 1c
1413cint 3926 . 2 0c 1c
151, 14wceq 1642 1 Nn 0c 1c
Colors of variables: wff setvar class
This definition is referenced by:  dfnnc2  4395  peano1  4402  peano2  4403  peano5  4409  dfnnc3  5885
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