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Mirrors > Home > MPE Home > Th. List > cnaddid | Structured version Visualization version GIF version |
Description: The group identity element of complex number addition is zero. See also cnfld0 20569. (Contributed by Steve Rodriguez, 3-Dec-2006.) (Revised by AV, 26-Aug-2021.) (New usage is discouraged.) |
Ref | Expression |
---|---|
cnaddabl.g | ⊢ 𝐺 = {〈(Base‘ndx), ℂ〉, 〈(+g‘ndx), + 〉} |
Ref | Expression |
---|---|
cnaddid | ⊢ (0g‘𝐺) = 0 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 0cn 10633 | . . 3 ⊢ 0 ∈ ℂ | |
2 | cnex 10618 | . . . . 5 ⊢ ℂ ∈ V | |
3 | cnaddabl.g | . . . . . 6 ⊢ 𝐺 = {〈(Base‘ndx), ℂ〉, 〈(+g‘ndx), + 〉} | |
4 | 3 | grpbase 16610 | . . . . 5 ⊢ (ℂ ∈ V → ℂ = (Base‘𝐺)) |
5 | 2, 4 | ax-mp 5 | . . . 4 ⊢ ℂ = (Base‘𝐺) |
6 | eqid 2821 | . . . 4 ⊢ (0g‘𝐺) = (0g‘𝐺) | |
7 | addex 12388 | . . . . 5 ⊢ + ∈ V | |
8 | 3 | grpplusg 16611 | . . . . 5 ⊢ ( + ∈ V → + = (+g‘𝐺)) |
9 | 7, 8 | ax-mp 5 | . . . 4 ⊢ + = (+g‘𝐺) |
10 | id 22 | . . . 4 ⊢ (0 ∈ ℂ → 0 ∈ ℂ) | |
11 | addid2 10823 | . . . . 5 ⊢ (𝑥 ∈ ℂ → (0 + 𝑥) = 𝑥) | |
12 | 11 | adantl 484 | . . . 4 ⊢ ((0 ∈ ℂ ∧ 𝑥 ∈ ℂ) → (0 + 𝑥) = 𝑥) |
13 | addid1 10820 | . . . . 5 ⊢ (𝑥 ∈ ℂ → (𝑥 + 0) = 𝑥) | |
14 | 13 | adantl 484 | . . . 4 ⊢ ((0 ∈ ℂ ∧ 𝑥 ∈ ℂ) → (𝑥 + 0) = 𝑥) |
15 | 5, 6, 9, 10, 12, 14 | ismgmid2 17878 | . . 3 ⊢ (0 ∈ ℂ → 0 = (0g‘𝐺)) |
16 | 1, 15 | ax-mp 5 | . 2 ⊢ 0 = (0g‘𝐺) |
17 | 16 | eqcomi 2830 | 1 ⊢ (0g‘𝐺) = 0 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1537 ∈ wcel 2114 Vcvv 3494 {cpr 4569 〈cop 4573 ‘cfv 6355 (class class class)co 7156 ℂcc 10535 0cc0 10537 + caddc 10540 ndxcnx 16480 Basecbs 16483 +gcplusg 16565 0gc0g 16713 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2793 ax-sep 5203 ax-nul 5210 ax-pow 5266 ax-pr 5330 ax-un 7461 ax-cnex 10593 ax-resscn 10594 ax-1cn 10595 ax-icn 10596 ax-addcl 10597 ax-addrcl 10598 ax-mulcl 10599 ax-mulrcl 10600 ax-mulcom 10601 ax-addass 10602 ax-mulass 10603 ax-distr 10604 ax-i2m1 10605 ax-1ne0 10606 ax-1rid 10607 ax-rnegex 10608 ax-rrecex 10609 ax-cnre 10610 ax-pre-lttri 10611 ax-pre-lttrn 10612 ax-pre-ltadd 10613 ax-pre-mulgt0 10614 ax-addf 10616 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 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-rmo 3146 df-rab 3147 df-v 3496 df-sbc 3773 df-csb 3884 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-pss 3954 df-nul 4292 df-if 4468 df-pw 4541 df-sn 4568 df-pr 4570 df-tp 4572 df-op 4574 df-uni 4839 df-int 4877 df-iun 4921 df-br 5067 df-opab 5129 df-mpt 5147 df-tr 5173 df-id 5460 df-eprel 5465 df-po 5474 df-so 5475 df-fr 5514 df-we 5516 df-xp 5561 df-rel 5562 df-cnv 5563 df-co 5564 df-dm 5565 df-rn 5566 df-res 5567 df-ima 5568 df-pred 6148 df-ord 6194 df-on 6195 df-lim 6196 df-suc 6197 df-iota 6314 df-fun 6357 df-fn 6358 df-f 6359 df-f1 6360 df-fo 6361 df-f1o 6362 df-fv 6363 df-riota 7114 df-ov 7159 df-oprab 7160 df-mpo 7161 df-om 7581 df-1st 7689 df-2nd 7690 df-wrecs 7947 df-recs 8008 df-rdg 8046 df-1o 8102 df-oadd 8106 df-er 8289 df-en 8510 df-dom 8511 df-sdom 8512 df-fin 8513 df-pnf 10677 df-mnf 10678 df-xr 10679 df-ltxr 10680 df-le 10681 df-sub 10872 df-neg 10873 df-nn 11639 df-2 11701 df-n0 11899 df-z 11983 df-uz 12245 df-fz 12894 df-struct 16485 df-ndx 16486 df-slot 16487 df-base 16489 df-plusg 16578 df-0g 16715 |
This theorem is referenced by: cnaddinv 18991 |
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