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Definition df-3o 8093
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 8086 . 2 class 3o
2 c2o 8085 . . 3 class 2o
32csuc 6186 . 2 class suc 2o
41, 3wceq 1528 1 wff 3o = suc 2o
Colors of variables: wff setvar class
This definition is referenced by:  3on  8103  o2p2e4  8155  o2p2e4OLD  8156  3onn  8256  en3  8743  hash3  13755  finxp3o  34563  tr3dom  39772  df3o2  40252  df3o3  40253  clsk1independent  40274
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