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Mirrors > Home > ILE Home > Th. List > xrre3 | Unicode version |
Description: A way of proving that an extended real is real. (Contributed by FL, 29-May-2014.) |
Ref | Expression |
---|---|
xrre3 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | mnflt 9569 | . . . . . 6 | |
2 | 1 | adantl 275 | . . . . 5 |
3 | mnfxr 7822 | . . . . . . 7 | |
4 | 3 | a1i 9 | . . . . . 6 |
5 | rexr 7811 | . . . . . . 7 | |
6 | 5 | adantl 275 | . . . . . 6 |
7 | simpl 108 | . . . . . 6 | |
8 | xrltletr 9590 | . . . . . 6 | |
9 | 4, 6, 7, 8 | syl3anc 1216 | . . . . 5 |
10 | 2, 9 | mpand 425 | . . . 4 |
11 | 10 | imp 123 | . . 3 |
12 | 11 | adantrr 470 | . 2 |
13 | simprr 521 | . 2 | |
14 | xrrebnd 9602 | . . 3 | |
15 | 14 | ad2antrr 479 | . 2 |
16 | 12, 13, 15 | mpbir2and 928 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 103 wb 104 wcel 1480 class class class wbr 3929 cr 7619 cpnf 7797 cmnf 7798 cxr 7799 clt 7800 cle 7801 |
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 603 ax-in2 604 ax-io 698 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-10 1483 ax-11 1484 ax-i12 1485 ax-bndl 1486 ax-4 1487 ax-13 1491 ax-14 1492 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2121 ax-sep 4046 ax-pow 4098 ax-pr 4131 ax-un 4355 ax-setind 4452 ax-cnex 7711 ax-resscn 7712 ax-pre-ltirr 7732 ax-pre-ltwlin 7733 ax-pre-lttrn 7734 |
This theorem depends on definitions: df-bi 116 df-3or 963 df-3an 964 df-tru 1334 df-fal 1337 df-nf 1437 df-sb 1736 df-eu 2002 df-mo 2003 df-clab 2126 df-cleq 2132 df-clel 2135 df-nfc 2270 df-ne 2309 df-nel 2404 df-ral 2421 df-rex 2422 df-rab 2425 df-v 2688 df-dif 3073 df-un 3075 df-in 3077 df-ss 3084 df-pw 3512 df-sn 3533 df-pr 3534 df-op 3536 df-uni 3737 df-br 3930 df-opab 3990 df-po 4218 df-iso 4219 df-xp 4545 df-cnv 4547 df-pnf 7802 df-mnf 7803 df-xr 7804 df-ltxr 7805 df-le 7806 |
This theorem is referenced by: (None) |
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