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Mirrors > Home > ILE Home > Th. List > df-oadd | Unicode version |
Description: Define the ordinal addition operation. (Contributed by NM, 3-May-1995.) |
Ref | Expression |
---|---|
df-oadd |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | coa 6389 | . 2 | |
2 | vx | . . 3 | |
3 | vy | . . 3 | |
4 | con0 4346 | . . 3 | |
5 | 3 | cv 1347 | . . . 4 |
6 | vz | . . . . . 6 | |
7 | cvv 2730 | . . . . . 6 | |
8 | 6 | cv 1347 | . . . . . . 7 |
9 | 8 | csuc 4348 | . . . . . 6 |
10 | 6, 7, 9 | cmpt 4048 | . . . . 5 |
11 | 2 | cv 1347 | . . . . 5 |
12 | 10, 11 | crdg 6345 | . . . 4 |
13 | 5, 12 | cfv 5196 | . . 3 |
14 | 2, 3, 4, 4, 13 | cmpo 5852 | . 2 |
15 | 1, 14 | wceq 1348 | 1 |
Colors of variables: wff set class |
This definition is referenced by: fnoa 6423 oaexg 6424 oav 6430 |
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