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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 4696 |
. 2
| |
| 2 | fvres 5585 |
. . 3
| |
| 3 | df-ov 5928 |
. . . 4
| |
| 4 | df-pli 7389 |
. . . . 5
| |
| 5 | 4 | fveq1i 5562 |
. . . 4
|
| 6 | 3, 5 | eqtri 2217 |
. . 3
|
| 7 | df-ov 5928 |
. . 3
| |
| 8 | 2, 6, 7 | 3eqtr4g 2254 |
. 2
|
| 9 | 1, 8 | syl 14 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-14 2170 ax-ext 2178 ax-sep 4152 ax-pow 4208 ax-pr 4243 |
| This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-nf 1475 df-sb 1777 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-ral 2480 df-rex 2481 df-v 2765 df-un 3161 df-in 3163 df-ss 3170 df-pw 3608 df-sn 3629 df-pr 3630 df-op 3632 df-uni 3841 df-br 4035 df-opab 4096 df-xp 4670 df-res 4676 df-iota 5220 df-fv 5267 df-ov 5928 df-pli 7389 |
| This theorem is referenced by: addclpi 7411 addcompig 7413 addasspig 7414 distrpig 7417 addcanpig 7418 addnidpig 7420 ltexpi 7421 ltapig 7422 1lt2pi 7424 indpi 7426 archnqq 7501 prarloclemarch2 7503 nqnq0a 7538 |
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