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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 10926 | . . 3 ⊢ -0 = 0 | |
2 | 0lt1 11156 | . . 3 ⊢ 0 < 1 | |
3 | 1, 2 | eqbrtri 5080 | . 2 ⊢ -0 < 1 |
4 | 1re 10635 | . . 3 ⊢ 1 ∈ ℝ | |
5 | 0re 10637 | . . 3 ⊢ 0 ∈ ℝ | |
6 | 4, 5 | ltnegcon1i 11185 | . 2 ⊢ (-1 < 0 ↔ -0 < 1) |
7 | 3, 6 | mpbir 233 | 1 ⊢ -1 < 0 |
Colors of variables: wff setvar class |
Syntax hints: class class class wbr 5059 0cc0 10531 1c1 10532 < clt 10669 -cneg 10865 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2156 ax-12 2172 ax-ext 2793 ax-sep 5196 ax-nul 5203 ax-pow 5259 ax-pr 5322 ax-un 7455 ax-resscn 10588 ax-1cn 10589 ax-icn 10590 ax-addcl 10591 ax-addrcl 10592 ax-mulcl 10593 ax-mulrcl 10594 ax-mulcom 10595 ax-addass 10596 ax-mulass 10597 ax-distr 10598 ax-i2m1 10599 ax-1ne0 10600 ax-1rid 10601 ax-rnegex 10602 ax-rrecex 10603 ax-cnre 10604 ax-pre-lttri 10605 ax-pre-lttrn 10606 ax-pre-ltadd 10607 ax-pre-mulgt0 10608 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1536 df-ex 1777 df-nf 1781 df-sb 2066 df-mo 2618 df-eu 2650 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ne 3017 df-nel 3124 df-ral 3143 df-rex 3144 df-reu 3145 df-rab 3147 df-v 3497 df-sbc 3773 df-csb 3884 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-nul 4292 df-if 4468 df-pw 4541 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4833 df-br 5060 df-opab 5122 df-mpt 5140 df-id 5455 df-po 5469 df-so 5470 df-xp 5556 df-rel 5557 df-cnv 5558 df-co 5559 df-dm 5560 df-rn 5561 df-res 5562 df-ima 5563 df-iota 6309 df-fun 6352 df-fn 6353 df-f 6354 df-f1 6355 df-fo 6356 df-f1o 6357 df-fv 6358 df-riota 7108 df-ov 7153 df-oprab 7154 df-mpo 7155 df-er 8283 df-en 8504 df-dom 8505 df-sdom 8506 df-pnf 10671 df-mnf 10672 df-xr 10673 df-ltxr 10674 df-le 10675 df-sub 10866 df-neg 10867 |
This theorem is referenced by: risefall0lem 15374 binomfallfaclem2 15388 nthruz 15600 psgnodpmr 20728 xrhmph 23545 vitalilem4 24206 vitali 24208 atanre 25457 lgsdir2lem3 25897 ballotlem1c 31760 sgnnbi 31798 sgnpbi 31799 sgnsgn 31801 sgnmulsgn 31802 signswch 31826 fz0n 32957 bcneg1 32963 cnndvlem1 33871 asindmre 34971 stoweidlem7 42285 stirlinglem6 42357 fouriersw 42509 dignn0flhalflem1 44668 |
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