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Definition df-3o 8468
Description: Define the ordinal number 3. (Contributed by Mario Carneiro, 14-Jul-2013.)
Assertion
Ref Expression
df-3o 3o = suc 2o

Detailed syntax breakdown of Definition df-3o
StepHypRef Expression
1 c3o 8461 . 2 class 3o
2 c2o 8460 . . 3 class 2o
32csuc 6367 . 2 class suc 2o
41, 3wceq 1542 1 wff 3o = suc 2o
Colors of variables: wff setvar class
This definition is referenced by:  ord3  8483  3on  8484  o2p2e4  8541  3onn  8643  en3  9282  hash3  14366  finxp3o  36281  df3o2  42063  df3o3  42064  omcl3g  42084  nlim3  42195  tr3dom  42279  har2o  42297  clsk1independent  42797
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