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Definition df-3o 8467
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 8460 . 2 class 3o
2 c2o 8459 . . 3 class 2o
32csuc 6366 . 2 class suc 2o
41, 3wceq 1541 1 wff 3o = suc 2o
Colors of variables: wff setvar class
This definition is referenced by:  ord3  8482  3on  8483  o2p2e4  8540  3onn  8642  en3  9281  hash3  14365  finxp3o  36276  df3o2  42053  df3o3  42054  omcl3g  42074  nlim3  42185  tr3dom  42269  har2o  42287  clsk1independent  42787
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