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Mirrors > Home > MPE Home > Th. List > cnidOLD | Structured version Visualization version GIF version |
Description: Obsolete version of cnaddid 19499. The group identity element of complex number addition is zero. (Contributed by Steve Rodriguez, 3-Dec-2006.) (Revised by Mario Carneiro, 21-Dec-2013.) (New usage is discouraged.) (Proof modification is discouraged.) |
Ref | Expression |
---|---|
cnidOLD | ⊢ 0 = (GId‘ + ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cnaddabloOLD 28971 | . . . 4 ⊢ + ∈ AbelOp | |
2 | ablogrpo 28937 | . . . 4 ⊢ ( + ∈ AbelOp → + ∈ GrpOp) | |
3 | 1, 2 | ax-mp 5 | . . 3 ⊢ + ∈ GrpOp |
4 | ax-addf 10978 | . . . . . 6 ⊢ + :(ℂ × ℂ)⟶ℂ | |
5 | 4 | fdmi 6630 | . . . . 5 ⊢ dom + = (ℂ × ℂ) |
6 | 3, 5 | grporn 28911 | . . . 4 ⊢ ℂ = ran + |
7 | eqid 2733 | . . . 4 ⊢ (GId‘ + ) = (GId‘ + ) | |
8 | 6, 7 | grpoidval 28903 | . . 3 ⊢ ( + ∈ GrpOp → (GId‘ + ) = (℩𝑦 ∈ ℂ ∀𝑥 ∈ ℂ (𝑦 + 𝑥) = 𝑥)) |
9 | 3, 8 | ax-mp 5 | . 2 ⊢ (GId‘ + ) = (℩𝑦 ∈ ℂ ∀𝑥 ∈ ℂ (𝑦 + 𝑥) = 𝑥) |
10 | addid2 11186 | . . . 4 ⊢ (𝑥 ∈ ℂ → (0 + 𝑥) = 𝑥) | |
11 | 10 | rgen 3061 | . . 3 ⊢ ∀𝑥 ∈ ℂ (0 + 𝑥) = 𝑥 |
12 | 0cn 10995 | . . . 4 ⊢ 0 ∈ ℂ | |
13 | 6 | grpoideu 28899 | . . . . 5 ⊢ ( + ∈ GrpOp → ∃!𝑦 ∈ ℂ ∀𝑥 ∈ ℂ (𝑦 + 𝑥) = 𝑥) |
14 | 3, 13 | ax-mp 5 | . . . 4 ⊢ ∃!𝑦 ∈ ℂ ∀𝑥 ∈ ℂ (𝑦 + 𝑥) = 𝑥 |
15 | oveq1 7302 | . . . . . . 7 ⊢ (𝑦 = 0 → (𝑦 + 𝑥) = (0 + 𝑥)) | |
16 | 15 | eqeq1d 2735 | . . . . . 6 ⊢ (𝑦 = 0 → ((𝑦 + 𝑥) = 𝑥 ↔ (0 + 𝑥) = 𝑥)) |
17 | 16 | ralbidv 3168 | . . . . 5 ⊢ (𝑦 = 0 → (∀𝑥 ∈ ℂ (𝑦 + 𝑥) = 𝑥 ↔ ∀𝑥 ∈ ℂ (0 + 𝑥) = 𝑥)) |
18 | 17 | riota2 7278 | . . . 4 ⊢ ((0 ∈ ℂ ∧ ∃!𝑦 ∈ ℂ ∀𝑥 ∈ ℂ (𝑦 + 𝑥) = 𝑥) → (∀𝑥 ∈ ℂ (0 + 𝑥) = 𝑥 ↔ (℩𝑦 ∈ ℂ ∀𝑥 ∈ ℂ (𝑦 + 𝑥) = 𝑥) = 0)) |
19 | 12, 14, 18 | mp2an 688 | . . 3 ⊢ (∀𝑥 ∈ ℂ (0 + 𝑥) = 𝑥 ↔ (℩𝑦 ∈ ℂ ∀𝑥 ∈ ℂ (𝑦 + 𝑥) = 𝑥) = 0) |
20 | 11, 19 | mpbi 229 | . 2 ⊢ (℩𝑦 ∈ ℂ ∀𝑥 ∈ ℂ (𝑦 + 𝑥) = 𝑥) = 0 |
21 | 9, 20 | eqtr2i 2762 | 1 ⊢ 0 = (GId‘ + ) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 205 = wceq 1537 ∈ wcel 2101 ∀wral 3059 ∃!wreu 3219 × cxp 5589 ‘cfv 6447 ℩crio 7251 (class class class)co 7295 ℂcc 10897 0cc0 10899 + caddc 10902 GrpOpcgr 28879 GIdcgi 28880 AbelOpcablo 28934 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1793 ax-4 1807 ax-5 1909 ax-6 1967 ax-7 2007 ax-8 2103 ax-9 2111 ax-10 2132 ax-11 2149 ax-12 2166 ax-ext 2704 ax-rep 5212 ax-sep 5226 ax-nul 5233 ax-pow 5291 ax-pr 5355 ax-un 7608 ax-cnex 10955 ax-resscn 10956 ax-1cn 10957 ax-icn 10958 ax-addcl 10959 ax-addrcl 10960 ax-mulcl 10961 ax-mulrcl 10962 ax-mulcom 10963 ax-addass 10964 ax-mulass 10965 ax-distr 10966 ax-i2m1 10967 ax-1ne0 10968 ax-1rid 10969 ax-rnegex 10970 ax-rrecex 10971 ax-cnre 10972 ax-pre-lttri 10973 ax-pre-lttrn 10974 ax-pre-ltadd 10975 ax-addf 10978 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1540 df-fal 1550 df-ex 1778 df-nf 1782 df-sb 2063 df-mo 2535 df-eu 2564 df-clab 2711 df-cleq 2725 df-clel 2811 df-nfc 2884 df-ne 2939 df-nel 3045 df-ral 3060 df-rex 3069 df-reu 3223 df-rab 3224 df-v 3436 df-sbc 3719 df-csb 3835 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-nul 4260 df-if 4463 df-pw 4538 df-sn 4565 df-pr 4567 df-op 4571 df-uni 4842 df-iun 4929 df-br 5078 df-opab 5140 df-mpt 5161 df-id 5491 df-po 5505 df-so 5506 df-xp 5597 df-rel 5598 df-cnv 5599 df-co 5600 df-dm 5601 df-rn 5602 df-res 5603 df-ima 5604 df-iota 6399 df-fun 6449 df-fn 6450 df-f 6451 df-f1 6452 df-fo 6453 df-f1o 6454 df-fv 6455 df-riota 7252 df-ov 7298 df-oprab 7299 df-mpo 7300 df-er 8518 df-en 8754 df-dom 8755 df-sdom 8756 df-pnf 11039 df-mnf 11040 df-ltxr 11042 df-sub 11235 df-neg 11236 df-grpo 28883 df-gid 28884 df-ablo 28935 |
This theorem is referenced by: cnnv 29067 |
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