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Mirrors > Home > ILE Home > Th. List > ltpiord | Unicode version |
Description: Positive integer 'less than' in terms of ordinal membership. (Contributed by NM, 6-Feb-1996.) (Revised by Mario Carneiro, 28-Apr-2015.) |
Ref | Expression |
---|---|
ltpiord |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-lti 7139 |
. . 3
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2 | 1 | breqi 3943 |
. 2
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3 | brinxp 4615 |
. . 3
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4 | epelg 4220 |
. . . 4
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5 | 4 | adantl 275 |
. . 3
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6 | 3, 5 | bitr3d 189 |
. 2
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7 | 2, 6 | syl5bb 191 |
1
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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 105 ax-ia2 106 ax-ia3 107 ax-io 699 ax-5 1424 ax-7 1425 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-8 1483 ax-10 1484 ax-11 1485 ax-i12 1486 ax-bndl 1487 ax-4 1488 ax-14 1493 ax-17 1507 ax-i9 1511 ax-ial 1515 ax-i5r 1516 ax-ext 2122 ax-sep 4054 ax-pow 4106 ax-pr 4139 |
This theorem depends on definitions: df-bi 116 df-3an 965 df-tru 1335 df-nf 1438 df-sb 1737 df-eu 2003 df-mo 2004 df-clab 2127 df-cleq 2133 df-clel 2136 df-nfc 2271 df-ral 2422 df-rex 2423 df-v 2691 df-un 3080 df-in 3082 df-ss 3089 df-pw 3517 df-sn 3538 df-pr 3539 df-op 3541 df-br 3938 df-opab 3998 df-eprel 4219 df-xp 4553 df-lti 7139 |
This theorem is referenced by: ltsopi 7152 pitric 7153 pitri3or 7154 ltdcpi 7155 ltexpi 7169 ltapig 7170 ltmpig 7171 1lt2pi 7172 nlt1pig 7173 archnqq 7249 prarloclemarch2 7251 prarloclemlt 7325 prarloclemn 7331 |
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