Nearby theorems
|
|
Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
|
| Mirrors > Home > ILE Home > Th. List > df-3o | Unicode version | ||
| Description: Define the ordinal number 3. (Contributed by Mario Carneiro, 14-Jul-2013.) |
| Ref | Expression |
|---|---|
| df-3o |
     |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | c3o 6370 |
. 2
 | |
| 2 | c2o 6369 |
. . 3
| |
| 3 | 2 | csuc 4337 |
. 2
|
| 4 | 1, 3 | wceq 1342 |
1
 |
| Colors of variables: wff set class |
| This definition is referenced by: 3on 6386 3onn 6481 pw1ne3 7177 pw1nel3 7178 sucpw1nel3 7180 3nelsucpw1 7181 3nsssucpw1 7183 onntri35 7184 hash3 10715 |
| Copyright terms: Public domain | W3C validator |