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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 11135 | . . 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 231 | 1 ⊢ -1 < 0 |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 207 ∈ wcel 2119 class class class wbr 5072 ℝcr 11028 0cc0 11029 1c1 11030 < clt 11170 -cneg 11369 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2711 ax-sep 5218 ax-nul 5228 ax-pow 5294 ax-pr 5362 ax-un 7678 ax-resscn 11086 ax-1cn 11087 ax-icn 11088 ax-addcl 11089 ax-addrcl 11090 ax-mulcl 11091 ax-mulrcl 11092 ax-mulcom 11093 ax-addass 11094 ax-mulass 11095 ax-distr 11096 ax-i2m1 11097 ax-1ne0 11098 ax-1rid 11099 ax-rnegex 11100 ax-rrecex 11101 ax-cnre 11102 ax-pre-lttri 11103 ax-pre-lttrn 11104 ax-pre-ltadd 11105 ax-pre-mulgt0 11106 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3or 1093 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2718 df-cleq 2731 df-clel 2814 df-nfc 2888 df-ne 2935 df-nel 3039 df-ral 3054 df-rex 3064 df-reu 3345 df-rab 3392 df-v 3433 df-sbc 3724 df-csb 3832 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4262 df-if 4455 df-pw 4531 df-sn 4556 df-pr 4558 df-op 4562 df-uni 4839 df-br 5073 df-opab 5135 df-mpt 5154 df-id 5513 df-po 5526 df-so 5527 df-xp 5624 df-rel 5625 df-cnv 5626 df-co 5627 df-dm 5628 df-rn 5629 df-res 5630 df-ima 5631 df-iota 6441 df-fun 6487 df-fn 6488 df-f 6489 df-f1 6490 df-fo 6491 df-f1o 6492 df-fv 6493 df-riota 7313 df-ov 7359 df-oprab 7360 df-mpo 7361 df-er 8633 df-en 8884 df-dom 8885 df-sdom 8886 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 12140 risefall0lem 15982 binomfallfaclem2 15996 nthruz 16211 chnub 18579 psgnodpmr 21565 xrhmph 24932 vitalilem4 25596 vitali 25598 atanre 26867 lgsdir2lem3 27308 sgnnbi 32930 sgnpbi 32931 sgnsgn 32933 sgnmulsgn 32934 cos9thpiminplylem1 33966 ballotlem1c 34692 signswch 34745 fz0n 35959 bcneg1 35964 cnndvlem1 36843 irrdiff 37686 asindmre 38070 stoweidlem7 46450 stirlinglem6 46522 fouriersw 46674 dignn0flhalflem1 49106 |
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