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Mirrors > Home > ILE Home > Th. List > addpiord | Unicode version |
Description: Positive integer addition in terms of ordinal addition. (Contributed by NM, 27-Aug-1995.) |
Ref | Expression |
---|---|
addpiord |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | opelxpi 4643 | . 2 | |
2 | fvres 5520 | . . 3 | |
3 | df-ov 5856 | . . . 4 | |
4 | df-pli 7267 | . . . . 5 | |
5 | 4 | fveq1i 5497 | . . . 4 |
6 | 3, 5 | eqtri 2191 | . . 3 |
7 | df-ov 5856 | . . 3 | |
8 | 2, 6, 7 | 3eqtr4g 2228 | . 2 |
9 | 1, 8 | syl 14 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 103 wceq 1348 wcel 2141 cop 3586 cxp 4609 cres 4613 cfv 5198 (class class class)co 5853 coa 6392 cnpi 7234 cpli 7235 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 704 ax-5 1440 ax-7 1441 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-8 1497 ax-10 1498 ax-11 1499 ax-i12 1500 ax-bndl 1502 ax-4 1503 ax-17 1519 ax-i9 1523 ax-ial 1527 ax-i5r 1528 ax-14 2144 ax-ext 2152 ax-sep 4107 ax-pow 4160 ax-pr 4194 |
This theorem depends on definitions: df-bi 116 df-3an 975 df-tru 1351 df-nf 1454 df-sb 1756 df-clab 2157 df-cleq 2163 df-clel 2166 df-nfc 2301 df-ral 2453 df-rex 2454 df-v 2732 df-un 3125 df-in 3127 df-ss 3134 df-pw 3568 df-sn 3589 df-pr 3590 df-op 3592 df-uni 3797 df-br 3990 df-opab 4051 df-xp 4617 df-res 4623 df-iota 5160 df-fv 5206 df-ov 5856 df-pli 7267 |
This theorem is referenced by: addclpi 7289 addcompig 7291 addasspig 7292 distrpig 7295 addcanpig 7296 addnidpig 7298 ltexpi 7299 ltapig 7300 1lt2pi 7302 indpi 7304 archnqq 7379 prarloclemarch2 7381 nqnq0a 7416 |
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