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Mirrors > Home > ILE Home > Th. List > xrltne | Unicode version |
Description: 'Less than' implies not equal for extended reals. (Contributed by NM, 20-Jan-2006.) |
Ref | Expression |
---|---|
xrltne |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | xrltnr 9709 | . . . . 5 | |
2 | breq2 3983 | . . . . . 6 | |
3 | 2 | notbid 657 | . . . . 5 |
4 | 1, 3 | syl5ibrcom 156 | . . . 4 |
5 | 4 | necon2ad 2391 | . . 3 |
6 | 5 | imp 123 | . 2 |
7 | 6 | 3adant2 1005 | 1 |
Colors of variables: wff set class |
Syntax hints: wn 3 wi 4 w3a 967 wceq 1342 wcel 2135 wne 2334 class class class wbr 3979 cxr 7926 clt 7927 |
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-in1 604 ax-in2 605 ax-io 699 ax-5 1434 ax-7 1435 ax-gen 1436 ax-ie1 1480 ax-ie2 1481 ax-8 1491 ax-10 1492 ax-11 1493 ax-i12 1494 ax-bndl 1496 ax-4 1497 ax-17 1513 ax-i9 1517 ax-ial 1521 ax-i5r 1522 ax-13 2137 ax-14 2138 ax-ext 2146 ax-sep 4097 ax-pow 4150 ax-pr 4184 ax-un 4408 ax-setind 4511 ax-cnex 7838 ax-resscn 7839 ax-pre-ltirr 7859 |
This theorem depends on definitions: df-bi 116 df-3or 968 df-3an 969 df-tru 1345 df-fal 1348 df-nf 1448 df-sb 1750 df-eu 2016 df-mo 2017 df-clab 2151 df-cleq 2157 df-clel 2160 df-nfc 2295 df-ne 2335 df-nel 2430 df-ral 2447 df-rex 2448 df-rab 2451 df-v 2726 df-dif 3116 df-un 3118 df-in 3120 df-ss 3127 df-pw 3558 df-sn 3579 df-pr 3580 df-op 3582 df-uni 3787 df-br 3980 df-opab 4041 df-xp 4607 df-pnf 7929 df-mnf 7930 df-xr 7931 df-ltxr 7932 |
This theorem is referenced by: (None) |
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