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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 11736 | . 2 ⊢ 0 < 1 | |
| 2 | 1re 11208 | . . 3 ⊢ 1 ∈ ℝ | |
| 3 | lt0neg2 11721 | . . 3 ⊢ (1 ∈ ℝ → (0 < 1 ↔ -1 < 0)) | |
| 4 | 2, 3 | ax-mp 5 | . 2 ⊢ (0 < 1 ↔ -1 < 0) |
| 5 | 1, 4 | mpbi 233 | 1 ⊢ -1 < 0 |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 209 ∈ wcel 2149 class class class wbr 5113 ℝcr 11099 0cc0 11100 1c1 11101 < clt 11243 -cneg 11442 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-sep 5261 ax-nul 5271 ax-pow 5337 ax-pr 5405 ax-un 7733 ax-resscn 11157 ax-1cn 11158 ax-icn 11159 ax-addcl 11160 ax-addrcl 11161 ax-mulcl 11162 ax-mulrcl 11163 ax-mulcom 11164 ax-addass 11165 ax-mulass 11166 ax-distr 11167 ax-i2m1 11168 ax-1ne0 11169 ax-1rid 11170 ax-rnegex 11171 ax-rrecex 11172 ax-cnre 11173 ax-pre-lttri 11174 ax-pre-lttrn 11175 ax-pre-ltadd 11176 ax-pre-mulgt0 11177 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-nel 3071 df-ral 3086 df-rex 3096 df-reu 3377 df-rab 3424 df-v 3465 df-sbc 3754 df-csb 3862 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-nul 4295 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4877 df-br 5114 df-opab 5178 df-mpt 5197 df-id 5557 df-po 5570 df-so 5571 df-xp 5668 df-rel 5669 df-cnv 5670 df-co 5671 df-dm 5672 df-rn 5673 df-res 5674 df-ima 5675 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7368 df-ov 7414 df-oprab 7415 df-mpo 7416 df-er 8694 df-en 8944 df-dom 8945 df-sdom 8946 df-pnf 11245 df-mnf 11246 df-xr 11247 df-ltxr 11248 df-le 11249 df-sub 11443 df-neg 11444 |
| This theorem is referenced by: inelr 12208 sgnnbi 15141 sgnpbi 15142 sgnmulsgn 15146 risefall0lem 16080 binomfallfaclem2 16094 nthruz 16309 chnub 18678 psgnodpmr 21709 xrhmph 25075 vitalilem4 25739 vitali 25741 atanre 27016 lgsdir2lem3 27457 sgnsgn 33116 cos9thpiminplylem1 34117 ballotlem1c 34843 signswch 34893 fz0n 36122 bcneg1 36127 cnndvlem1 37015 irrdiff 37858 asindmre 38242 stoweidlem7 46613 stirlinglem6 46685 fouriersw 46837 dignn0flhalflem1 49280 |
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