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Mirrors > Home > MPE Home > Th. List > Mathboxes > rernegcl | Structured version Visualization version GIF version |
Description: Closure law for negative reals. (Contributed by Steven Nguyen, 7-Jan-2023.) |
Ref | Expression |
---|---|
rernegcl | ⊢ (𝐴 ∈ ℝ → (0 −ℝ 𝐴) ∈ ℝ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elre0re 40212 | . . 3 ⊢ (𝐴 ∈ ℝ → 0 ∈ ℝ) | |
2 | resubval 40271 | . . 3 ⊢ ((0 ∈ ℝ ∧ 𝐴 ∈ ℝ) → (0 −ℝ 𝐴) = (℩𝑥 ∈ ℝ (𝐴 + 𝑥) = 0)) | |
3 | 1, 2 | mpancom 684 | . 2 ⊢ (𝐴 ∈ ℝ → (0 −ℝ 𝐴) = (℩𝑥 ∈ ℝ (𝐴 + 𝑥) = 0)) |
4 | renegeu 40274 | . . 3 ⊢ (𝐴 ∈ ℝ → ∃!𝑥 ∈ ℝ (𝐴 + 𝑥) = 0) | |
5 | riotacl 7230 | . . 3 ⊢ (∃!𝑥 ∈ ℝ (𝐴 + 𝑥) = 0 → (℩𝑥 ∈ ℝ (𝐴 + 𝑥) = 0) ∈ ℝ) | |
6 | 4, 5 | syl 17 | . 2 ⊢ (𝐴 ∈ ℝ → (℩𝑥 ∈ ℝ (𝐴 + 𝑥) = 0) ∈ ℝ) |
7 | 3, 6 | eqeltrd 2839 | 1 ⊢ (𝐴 ∈ ℝ → (0 −ℝ 𝐴) ∈ ℝ) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1539 ∈ wcel 2108 ∃!wreu 3065 ℩crio 7211 (class class class)co 7255 ℝcr 10801 0cc0 10802 + caddc 10805 −ℝ cresub 40269 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-resscn 10859 ax-addrcl 10863 ax-rnegex 10873 ax-pre-lttri 10876 ax-pre-lttrn 10877 ax-pre-ltadd 10878 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-reu 3070 df-rmo 3071 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4837 df-br 5071 df-opab 5133 df-mpt 5154 df-id 5480 df-po 5494 df-so 5495 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-riota 7212 df-ov 7258 df-oprab 7259 df-mpo 7260 df-er 8456 df-en 8692 df-dom 8693 df-sdom 8694 df-pnf 10942 df-mnf 10943 df-ltxr 10945 df-resub 40270 |
This theorem is referenced by: renegid 40277 reneg0addid2 40278 resubeulem1 40279 resubeulem2 40280 resubeu 40281 sn-00idlem2 40303 renegneg 40315 readdcan2 40316 renegid2 40317 sn-it0e0 40318 sn-negex12 40319 reixi 40325 rei4 40326 ipiiie0 40340 sn-0tie0 40342 mulgt0b2d 40351 sn-0lt1 40353 sn-inelr 40356 cnreeu 40359 |
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