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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 4707 |
. 2
| |
| 2 | fvres 5600 |
. . 3
| |
| 3 | df-ov 5947 |
. . . 4
| |
| 4 | df-pli 7418 |
. . . . 5
| |
| 5 | 4 | fveq1i 5577 |
. . . 4
|
| 6 | 3, 5 | eqtri 2226 |
. . 3
|
| 7 | df-ov 5947 |
. . 3
| |
| 8 | 2, 6, 7 | 3eqtr4g 2263 |
. 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 711 ax-5 1470 ax-7 1471 ax-gen 1472 ax-ie1 1516 ax-ie2 1517 ax-8 1527 ax-10 1528 ax-11 1529 ax-i12 1530 ax-bndl 1532 ax-4 1533 ax-17 1549 ax-i9 1553 ax-ial 1557 ax-i5r 1558 ax-14 2179 ax-ext 2187 ax-sep 4162 ax-pow 4218 ax-pr 4253 |
| This theorem depends on definitions: df-bi 117 df-3an 983 df-tru 1376 df-nf 1484 df-sb 1786 df-clab 2192 df-cleq 2198 df-clel 2201 df-nfc 2337 df-ral 2489 df-rex 2490 df-v 2774 df-un 3170 df-in 3172 df-ss 3179 df-pw 3618 df-sn 3639 df-pr 3640 df-op 3642 df-uni 3851 df-br 4045 df-opab 4106 df-xp 4681 df-res 4687 df-iota 5232 df-fv 5279 df-ov 5947 df-pli 7418 |
| This theorem is referenced by: addclpi 7440 addcompig 7442 addasspig 7443 distrpig 7446 addcanpig 7447 addnidpig 7449 ltexpi 7450 ltapig 7451 1lt2pi 7453 indpi 7455 archnqq 7530 prarloclemarch2 7532 nqnq0a 7567 |
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