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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 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | opelxpi 4529 |
. 2
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2 | fvres 5397 |
. . 3
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3 | df-ov 5729 |
. . . 4
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4 | df-pli 7055 |
. . . . 5
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5 | 4 | fveq1i 5374 |
. . . 4
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6 | 3, 5 | eqtri 2133 |
. . 3
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7 | df-ov 5729 |
. . 3
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8 | 2, 6, 7 | 3eqtr4g 2170 |
. 2
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9 | 1, 8 | syl 14 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 681 ax-5 1404 ax-7 1405 ax-gen 1406 ax-ie1 1450 ax-ie2 1451 ax-8 1463 ax-10 1464 ax-11 1465 ax-i12 1466 ax-bndl 1467 ax-4 1468 ax-14 1473 ax-17 1487 ax-i9 1491 ax-ial 1495 ax-i5r 1496 ax-ext 2095 ax-sep 4004 ax-pow 4056 ax-pr 4089 |
This theorem depends on definitions: df-bi 116 df-3an 945 df-tru 1315 df-nf 1418 df-sb 1717 df-clab 2100 df-cleq 2106 df-clel 2109 df-nfc 2242 df-ral 2393 df-rex 2394 df-v 2657 df-un 3039 df-in 3041 df-ss 3048 df-pw 3476 df-sn 3497 df-pr 3498 df-op 3500 df-uni 3701 df-br 3894 df-opab 3948 df-xp 4503 df-res 4509 df-iota 5044 df-fv 5087 df-ov 5729 df-pli 7055 |
This theorem is referenced by: addclpi 7077 addcompig 7079 addasspig 7080 distrpig 7083 addcanpig 7084 addnidpig 7086 ltexpi 7087 ltapig 7088 1lt2pi 7090 indpi 7092 archnqq 7167 prarloclemarch2 7169 nqnq0a 7204 |
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