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| Mirrors > Home > MPE Home > Th. List > negne0d | Structured version Visualization version GIF version | ||
| Description: The negative of a nonzero number is nonzero. (Contributed by Mario Carneiro, 27-May-2016.) |
| Ref | Expression |
|---|---|
| negidd.1 | ⊢ (𝜑 → 𝐴 ∈ ℂ) |
| negne0d.2 | ⊢ (𝜑 → 𝐴 ≠ 0) |
| Ref | Expression |
|---|---|
| negne0d | ⊢ (𝜑 → -𝐴 ≠ 0) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | negne0d.2 | . 2 ⊢ (𝜑 → 𝐴 ≠ 0) | |
| 2 | negidd.1 | . . 3 ⊢ (𝜑 → 𝐴 ∈ ℂ) | |
| 3 | 2 | negne0bd 11562 | . 2 ⊢ (𝜑 → (𝐴 ≠ 0 ↔ -𝐴 ≠ 0)) |
| 4 | 1, 3 | mpbid 235 | 1 ⊢ (𝜑 → -𝐴 ≠ 0) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2149 ≠ wne 2964 ℂcc 11098 0cc0 11100 -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 |
| 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-ltxr 11248 df-sub 11443 df-neg 11444 |
| This theorem is referenced by: mul2lt0rlt0 13120 sgn0bi 15140 cosangneg2d 26938 isosctrlem2 26950 isosctrlem3 26951 dcubic2 26975 mcubic 26978 atancj 27041 cxplim 27102 lgsneg 27451 bcm1n 33081 divnumden2 33101 constrremulcl 34102 cos9thpiminply 34123 fourierdlem43 46756 etransclem47 46887 oexpnegnz 48332 |
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