Definition df-1o 4071

Description: Define the ordinal number 1.

Assertion

Ref	Expression
df-1o	|- 1o = suc (/)

Detailed syntax breakdown of Definition df-1o

Step	Hyp	Ref	Expression
1		c1o 4066	. 2 class 1o
2		c0 2251	. . 3 class (/)
3	2	csuc 2913	. 2 class suc (/)
4	1, 3	wceq 1099	1 wff 1o = suc (/)

This definition is referenced by:  1on 4076  df1o2 4078  ordgt0ge1 4082  oa1suc 4102  om1 4114  oe1 4116  oelim2 4160  nnecl 4169  1onn 4191  0sdom1dom 4456  aleph1 4794  nlt1pi 4956  indpi 4957  aleph1re 7445

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