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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 | neg0 11456 | . . 3 ⊢ -0 = 0 | |
2 | 0lt1 11686 | . . 3 ⊢ 0 < 1 | |
3 | 1, 2 | eqbrtri 5131 | . 2 ⊢ -0 < 1 |
4 | 1re 11164 | . . 3 ⊢ 1 ∈ ℝ | |
5 | 0re 11166 | . . 3 ⊢ 0 ∈ ℝ | |
6 | 4, 5 | ltnegcon1i 11715 | . 2 ⊢ (-1 < 0 ↔ -0 < 1) |
7 | 3, 6 | mpbir 230 | 1 ⊢ -1 < 0 |
Colors of variables: wff setvar class |
Syntax hints: class class class wbr 5110 0cc0 11060 1c1 11061 < clt 11198 -cneg 11395 |
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 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2702 ax-sep 5261 ax-nul 5268 ax-pow 5325 ax-pr 5389 ax-un 7677 ax-resscn 11117 ax-1cn 11118 ax-icn 11119 ax-addcl 11120 ax-addrcl 11121 ax-mulcl 11122 ax-mulrcl 11123 ax-mulcom 11124 ax-addass 11125 ax-mulass 11126 ax-distr 11127 ax-i2m1 11128 ax-1ne0 11129 ax-1rid 11130 ax-rnegex 11131 ax-rrecex 11132 ax-cnre 11133 ax-pre-lttri 11134 ax-pre-lttrn 11135 ax-pre-ltadd 11136 ax-pre-mulgt0 11137 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2533 df-eu 2562 df-clab 2709 df-cleq 2723 df-clel 2809 df-nfc 2884 df-ne 2940 df-nel 3046 df-ral 3061 df-rex 3070 df-reu 3352 df-rab 3406 df-v 3448 df-sbc 3743 df-csb 3859 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-nul 4288 df-if 4492 df-pw 4567 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4871 df-br 5111 df-opab 5173 df-mpt 5194 df-id 5536 df-po 5550 df-so 5551 df-xp 5644 df-rel 5645 df-cnv 5646 df-co 5647 df-dm 5648 df-rn 5649 df-res 5650 df-ima 5651 df-iota 6453 df-fun 6503 df-fn 6504 df-f 6505 df-f1 6506 df-fo 6507 df-f1o 6508 df-fv 6509 df-riota 7318 df-ov 7365 df-oprab 7366 df-mpo 7367 df-er 8655 df-en 8891 df-dom 8892 df-sdom 8893 df-pnf 11200 df-mnf 11201 df-xr 11202 df-ltxr 11203 df-le 11204 df-sub 11396 df-neg 11397 |
This theorem is referenced by: risefall0lem 15920 binomfallfaclem2 15934 nthruz 16146 psgnodpmr 21031 xrhmph 24347 vitalilem4 25012 vitali 25014 atanre 26272 lgsdir2lem3 26712 ballotlem1c 33196 sgnnbi 33234 sgnpbi 33235 sgnsgn 33237 sgnmulsgn 33238 signswch 33262 fz0n 34389 bcneg1 34395 cnndvlem1 35076 irrdiff 35870 asindmre 36234 stoweidlem7 44368 stirlinglem6 44440 fouriersw 44592 dignn0flhalflem1 46821 |
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