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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 4422 |
. 2
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2 | fvres 5251 |
. . 3
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3 | df-ov 5567 |
. . . 4
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4 | df-pli 6627 |
. . . . 5
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5 | 4 | fveq1i 5231 |
. . . 4
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6 | 3, 5 | eqtri 2103 |
. . 3
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7 | df-ov 5567 |
. . 3
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8 | 2, 6, 7 | 3eqtr4g 2140 |
. 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 104 ax-ia2 105 ax-ia3 106 ax-io 663 ax-5 1377 ax-7 1378 ax-gen 1379 ax-ie1 1423 ax-ie2 1424 ax-8 1436 ax-10 1437 ax-11 1438 ax-i12 1439 ax-bndl 1440 ax-4 1441 ax-14 1446 ax-17 1460 ax-i9 1464 ax-ial 1468 ax-i5r 1469 ax-ext 2065 ax-sep 3916 ax-pow 3968 ax-pr 3992 |
This theorem depends on definitions: df-bi 115 df-3an 922 df-tru 1288 df-nf 1391 df-sb 1688 df-clab 2070 df-cleq 2076 df-clel 2079 df-nfc 2212 df-ral 2358 df-rex 2359 df-v 2612 df-un 2986 df-in 2988 df-ss 2995 df-pw 3402 df-sn 3422 df-pr 3423 df-op 3425 df-uni 3622 df-br 3806 df-opab 3860 df-xp 4397 df-res 4403 df-iota 4917 df-fv 4960 df-ov 5567 df-pli 6627 |
This theorem is referenced by: addclpi 6649 addcompig 6651 addasspig 6652 distrpig 6655 addcanpig 6656 addnidpig 6658 ltexpi 6659 ltapig 6660 1lt2pi 6662 indpi 6664 archnqq 6739 prarloclemarch2 6741 nqnq0a 6776 |
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