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| Mirrors > Home > MPE Home > Th. List > neg1lt0 | Structured version Visualization version GIF version | ||
| Description: -1 is less than 0. (Contributed by David A. Wheeler, 8-Dec-2018.) |
| Ref | Expression |
|---|---|
| neg1lt0 | ⊢ -1 < 0 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 0lt1 11663 | . 2 ⊢ 0 < 1 | |
| 2 | 1re 11136 | . . 3 ⊢ 1 ∈ ℝ | |
| 3 | lt0neg2 11648 | . . 3 ⊢ (1 ∈ ℝ → (0 < 1 ↔ -1 < 0)) | |
| 4 | 2, 3 | ax-mp 5 | . 2 ⊢ (0 < 1 ↔ -1 < 0) |
| 5 | 1, 4 | mpbi 230 | 1 ⊢ -1 < 0 |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 206 ∈ wcel 2114 class class class wbr 5099 ℝcr 11029 0cc0 11030 1c1 11031 < clt 11170 -cneg 11369 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5242 ax-nul 5252 ax-pow 5311 ax-pr 5378 ax-un 7682 ax-resscn 11087 ax-1cn 11088 ax-icn 11089 ax-addcl 11090 ax-addrcl 11091 ax-mulcl 11092 ax-mulrcl 11093 ax-mulcom 11094 ax-addass 11095 ax-mulass 11096 ax-distr 11097 ax-i2m1 11098 ax-1ne0 11099 ax-1rid 11100 ax-rnegex 11101 ax-rrecex 11102 ax-cnre 11103 ax-pre-lttri 11104 ax-pre-lttrn 11105 ax-pre-ltadd 11106 ax-pre-mulgt0 11107 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3062 df-reu 3352 df-rab 3401 df-v 3443 df-sbc 3742 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4287 df-if 4481 df-pw 4557 df-sn 4582 df-pr 4584 df-op 4588 df-uni 4865 df-br 5100 df-opab 5162 df-mpt 5181 df-id 5520 df-po 5533 df-so 5534 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-iota 6449 df-fun 6495 df-fn 6496 df-f 6497 df-f1 6498 df-fo 6499 df-f1o 6500 df-fv 6501 df-riota 7317 df-ov 7363 df-oprab 7364 df-mpo 7365 df-er 8637 df-en 8888 df-dom 8889 df-sdom 8890 df-pnf 11172 df-mnf 11173 df-xr 11174 df-ltxr 11175 df-le 11176 df-sub 11370 df-neg 11371 |
| This theorem is referenced by: inelr 12139 risefall0lem 15953 binomfallfaclem2 15967 nthruz 16182 chnub 18549 psgnodpmr 21549 xrhmph 24905 vitalilem4 25572 vitali 25574 atanre 26855 lgsdir2lem3 27298 sgnnbi 32900 sgnpbi 32901 sgnsgn 32903 sgnmulsgn 32904 cos9thpiminplylem1 33920 ballotlem1c 34646 signswch 34699 fz0n 35906 bcneg1 35911 cnndvlem1 36712 irrdiff 37502 asindmre 37875 stoweidlem7 46287 stirlinglem6 46359 fouriersw 46511 dignn0flhalflem1 48897 |
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