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Definition df-oadd 7153
Description: Define the ordinal addition operation. (Contributed by NM, 3-May-1995.)
Assertion
Ref Expression
df-oadd
Distinct variable group:   , ,

Detailed syntax breakdown of Definition df-oadd
StepHypRef Expression
1 coa 7146 . 2
2 vx . . 3
3 vy . . 3
4 con0 4883 . . 3
53cv 1394 . . . 4
6 vz . . . . . 6
7 cvv 3109 . . . . . 6
86cv 1394 . . . . . . 7
98csuc 4885 . . . . . 6
106, 7, 9cmpt 4510 . . . . 5
112cv 1394 . . . . 5
1210, 11crdg 7094 . . . 4
135, 12cfv 5593 . . 3
142, 3, 4, 4, 13cmpt2 6298 . 2
151, 14wceq 1395 1
Colors of variables: wff setvar class
This definition is referenced by:  fnoa  7177  oav  7180
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