Nearby theorems
|
|
Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
|
| Mirrors > Home > MPE Home > Th. List > df-3o | Structured version Visualization version GIF version | ||
| Description: Define the ordinal number 3. (Contributed by Mario Carneiro, 14-Jul-2013.) |
| Ref | Expression |
|---|---|
| df-3o | ⊢ 3o = suc 2o |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | c3o 8262 | . 2 class 3o | |
| 2 | c2o 8261 | . . 3 class 2o | |
| 3 | 2 | csuc 6253 | . 2 class suc 2o |
| 4 | 1, 3 | wceq 1539 | 1 wff 3o = suc 2o |
| Colors of variables: wff setvar class |
| This definition is referenced by: 3on 8277 o2p2e4 8333 o2p2e4OLD 8334 3onn 8434 en3 8984 hash3 14049 finxp3o 35498 tr3dom 41033 df3o2 41523 df3o3 41524 clsk1independent 41545 |
| Copyright terms: Public domain | W3C validator |