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Mirrors > Home > ILE Home > Th. List > negelrpd | Unicode version |
Description: The negation of a negative number is in the positive real numbers. (Contributed by Glauco Siliprandi, 26-Jun-2021.) |
Ref | Expression |
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negelrpd.1 | |
negelrpd.2 |
Ref | Expression |
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negelrpd |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | negelrpd.2 | . 2 | |
2 | negelrpd.1 | . . 3 | |
3 | negelrp 9480 | . . 3 | |
4 | 2, 3 | syl 14 | . 2 |
5 | 1, 4 | mpbird 166 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wb 104 wcel 1480 class class class wbr 3929 cr 7624 cc0 7625 clt 7805 cneg 7939 crp 9446 |
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 7716 ax-resscn 7717 ax-1cn 7718 ax-1re 7719 ax-icn 7720 ax-addcl 7721 ax-addrcl 7722 ax-mulcl 7723 ax-addcom 7725 ax-addass 7727 ax-distr 7729 ax-i2m1 7730 ax-0id 7733 ax-rnegex 7734 ax-cnre 7736 ax-pre-ltadd 7741 |
This theorem depends on definitions: df-bi 116 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-reu 2423 df-rab 2425 df-v 2688 df-sbc 2910 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-id 4215 df-xp 4545 df-rel 4546 df-cnv 4547 df-co 4548 df-dm 4549 df-iota 5088 df-fun 5125 df-fv 5131 df-riota 5730 df-ov 5777 df-oprab 5778 df-mpo 5779 df-pnf 7807 df-mnf 7808 df-ltxr 7810 df-sub 7940 df-neg 7941 df-rp 9447 |
This theorem is referenced by: mul2lt0rlt0 9551 |
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