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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 21423. (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 11251 | . . 3 ⊢ 0 ∈ ℂ | |
2 | cnex 11234 | . . . . 5 ⊢ ℂ ∈ V | |
3 | cnaddabl.g | . . . . . 6 ⊢ 𝐺 = {〈(Base‘ndx), ℂ〉, 〈(+g‘ndx), + 〉} | |
4 | 3 | grpbase 17332 | . . . . 5 ⊢ (ℂ ∈ V → ℂ = (Base‘𝐺)) |
5 | 2, 4 | ax-mp 5 | . . . 4 ⊢ ℂ = (Base‘𝐺) |
6 | eqid 2735 | . . . 4 ⊢ (0g‘𝐺) = (0g‘𝐺) | |
7 | addex 13029 | . . . . 5 ⊢ + ∈ V | |
8 | 3 | grpplusg 17334 | . . . . 5 ⊢ ( + ∈ V → + = (+g‘𝐺)) |
9 | 7, 8 | ax-mp 5 | . . . 4 ⊢ + = (+g‘𝐺) |
10 | id 22 | . . . 4 ⊢ (0 ∈ ℂ → 0 ∈ ℂ) | |
11 | addlid 11442 | . . . . 5 ⊢ (𝑥 ∈ ℂ → (0 + 𝑥) = 𝑥) | |
12 | 11 | adantl 481 | . . . 4 ⊢ ((0 ∈ ℂ ∧ 𝑥 ∈ ℂ) → (0 + 𝑥) = 𝑥) |
13 | addrid 11439 | . . . . 5 ⊢ (𝑥 ∈ ℂ → (𝑥 + 0) = 𝑥) | |
14 | 13 | adantl 481 | . . . 4 ⊢ ((0 ∈ ℂ ∧ 𝑥 ∈ ℂ) → (𝑥 + 0) = 𝑥) |
15 | 5, 6, 9, 10, 12, 14 | ismgmid2 18694 | . . 3 ⊢ (0 ∈ ℂ → 0 = (0g‘𝐺)) |
16 | 1, 15 | ax-mp 5 | . 2 ⊢ 0 = (0g‘𝐺) |
17 | 16 | eqcomi 2744 | 1 ⊢ (0g‘𝐺) = 0 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1537 ∈ wcel 2106 Vcvv 3478 {cpr 4633 〈cop 4637 ‘cfv 6563 (class class class)co 7431 ℂcc 11151 0cc0 11153 + caddc 11156 ndxcnx 17227 Basecbs 17245 +gcplusg 17298 0gc0g 17486 |
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 1908 ax-6 1965 ax-7 2005 ax-8 2108 ax-9 2116 ax-10 2139 ax-11 2155 ax-12 2175 ax-ext 2706 ax-sep 5302 ax-nul 5312 ax-pow 5371 ax-pr 5438 ax-un 7754 ax-cnex 11209 ax-resscn 11210 ax-1cn 11211 ax-icn 11212 ax-addcl 11213 ax-addrcl 11214 ax-mulcl 11215 ax-mulrcl 11216 ax-mulcom 11217 ax-addass 11218 ax-mulass 11219 ax-distr 11220 ax-i2m1 11221 ax-1ne0 11222 ax-1rid 11223 ax-rnegex 11224 ax-rrecex 11225 ax-cnre 11226 ax-pre-lttri 11227 ax-pre-lttrn 11228 ax-pre-ltadd 11229 ax-pre-mulgt0 11230 ax-addf 11232 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1540 df-fal 1550 df-ex 1777 df-nf 1781 df-sb 2063 df-mo 2538 df-eu 2567 df-clab 2713 df-cleq 2727 df-clel 2814 df-nfc 2890 df-ne 2939 df-nel 3045 df-ral 3060 df-rex 3069 df-rmo 3378 df-reu 3379 df-rab 3434 df-v 3480 df-sbc 3792 df-csb 3909 df-dif 3966 df-un 3968 df-in 3970 df-ss 3980 df-pss 3983 df-nul 4340 df-if 4532 df-pw 4607 df-sn 4632 df-pr 4634 df-op 4638 df-uni 4913 df-iun 4998 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5583 df-eprel 5589 df-po 5597 df-so 5598 df-fr 5641 df-we 5643 df-xp 5695 df-rel 5696 df-cnv 5697 df-co 5698 df-dm 5699 df-rn 5700 df-res 5701 df-ima 5702 df-pred 6323 df-ord 6389 df-on 6390 df-lim 6391 df-suc 6392 df-iota 6516 df-fun 6565 df-fn 6566 df-f 6567 df-f1 6568 df-fo 6569 df-f1o 6570 df-fv 6571 df-riota 7388 df-ov 7434 df-oprab 7435 df-mpo 7436 df-om 7888 df-1st 8013 df-2nd 8014 df-frecs 8305 df-wrecs 8336 df-recs 8410 df-rdg 8449 df-1o 8505 df-er 8744 df-en 8985 df-dom 8986 df-sdom 8987 df-fin 8988 df-pnf 11295 df-mnf 11296 df-xr 11297 df-ltxr 11298 df-le 11299 df-sub 11492 df-neg 11493 df-nn 12265 df-2 12327 df-n0 12525 df-z 12612 df-uz 12877 df-fz 13545 df-struct 17181 df-slot 17216 df-ndx 17228 df-base 17246 df-plusg 17311 df-0g 17488 |
This theorem is referenced by: cnaddinv 19904 |
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