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Mirrors > Home > MPE Home > Th. List > gexid | Structured version Visualization version GIF version |
Description: Any element to the power of the group exponent. (Contributed by Mario Carneiro, 24-Apr-2016.) |
Ref | Expression |
---|---|
gexcl.1 | ⊢ 𝑋 = (Base‘𝐺) |
gexcl.2 | ⊢ 𝐸 = (gEx‘𝐺) |
gexid.3 | ⊢ · = (.g‘𝐺) |
gexid.4 | ⊢ 0 = (0g‘𝐺) |
Ref | Expression |
---|---|
gexid | ⊢ (𝐴 ∈ 𝑋 → (𝐸 · 𝐴) = 0 ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | oveq1 7262 | . . . 4 ⊢ (𝐸 = 0 → (𝐸 · 𝐴) = (0 · 𝐴)) | |
2 | gexcl.1 | . . . . 5 ⊢ 𝑋 = (Base‘𝐺) | |
3 | gexid.4 | . . . . 5 ⊢ 0 = (0g‘𝐺) | |
4 | gexid.3 | . . . . 5 ⊢ · = (.g‘𝐺) | |
5 | 2, 3, 4 | mulg0 18622 | . . . 4 ⊢ (𝐴 ∈ 𝑋 → (0 · 𝐴) = 0 ) |
6 | 1, 5 | sylan9eqr 2801 | . . 3 ⊢ ((𝐴 ∈ 𝑋 ∧ 𝐸 = 0) → (𝐸 · 𝐴) = 0 ) |
7 | 6 | adantrr 713 | . 2 ⊢ ((𝐴 ∈ 𝑋 ∧ (𝐸 = 0 ∧ {𝑦 ∈ ℕ ∣ ∀𝑥 ∈ 𝑋 (𝑦 · 𝑥) = 0 } = ∅)) → (𝐸 · 𝐴) = 0 ) |
8 | oveq1 7262 | . . . . . . 7 ⊢ (𝑦 = 𝐸 → (𝑦 · 𝑥) = (𝐸 · 𝑥)) | |
9 | 8 | eqeq1d 2740 | . . . . . 6 ⊢ (𝑦 = 𝐸 → ((𝑦 · 𝑥) = 0 ↔ (𝐸 · 𝑥) = 0 )) |
10 | 9 | ralbidv 3120 | . . . . 5 ⊢ (𝑦 = 𝐸 → (∀𝑥 ∈ 𝑋 (𝑦 · 𝑥) = 0 ↔ ∀𝑥 ∈ 𝑋 (𝐸 · 𝑥) = 0 )) |
11 | 10 | elrab 3617 | . . . 4 ⊢ (𝐸 ∈ {𝑦 ∈ ℕ ∣ ∀𝑥 ∈ 𝑋 (𝑦 · 𝑥) = 0 } ↔ (𝐸 ∈ ℕ ∧ ∀𝑥 ∈ 𝑋 (𝐸 · 𝑥) = 0 )) |
12 | 11 | simprbi 496 | . . 3 ⊢ (𝐸 ∈ {𝑦 ∈ ℕ ∣ ∀𝑥 ∈ 𝑋 (𝑦 · 𝑥) = 0 } → ∀𝑥 ∈ 𝑋 (𝐸 · 𝑥) = 0 ) |
13 | oveq2 7263 | . . . . 5 ⊢ (𝑥 = 𝐴 → (𝐸 · 𝑥) = (𝐸 · 𝐴)) | |
14 | 13 | eqeq1d 2740 | . . . 4 ⊢ (𝑥 = 𝐴 → ((𝐸 · 𝑥) = 0 ↔ (𝐸 · 𝐴) = 0 )) |
15 | 14 | rspcva 3550 | . . 3 ⊢ ((𝐴 ∈ 𝑋 ∧ ∀𝑥 ∈ 𝑋 (𝐸 · 𝑥) = 0 ) → (𝐸 · 𝐴) = 0 ) |
16 | 12, 15 | sylan2 592 | . 2 ⊢ ((𝐴 ∈ 𝑋 ∧ 𝐸 ∈ {𝑦 ∈ ℕ ∣ ∀𝑥 ∈ 𝑋 (𝑦 · 𝑥) = 0 }) → (𝐸 · 𝐴) = 0 ) |
17 | elfvex 6789 | . . . 4 ⊢ (𝐴 ∈ (Base‘𝐺) → 𝐺 ∈ V) | |
18 | 17, 2 | eleq2s 2857 | . . 3 ⊢ (𝐴 ∈ 𝑋 → 𝐺 ∈ V) |
19 | gexcl.2 | . . . 4 ⊢ 𝐸 = (gEx‘𝐺) | |
20 | eqid 2738 | . . . 4 ⊢ {𝑦 ∈ ℕ ∣ ∀𝑥 ∈ 𝑋 (𝑦 · 𝑥) = 0 } = {𝑦 ∈ ℕ ∣ ∀𝑥 ∈ 𝑋 (𝑦 · 𝑥) = 0 } | |
21 | 2, 4, 3, 19, 20 | gexlem1 19099 | . . 3 ⊢ (𝐺 ∈ V → ((𝐸 = 0 ∧ {𝑦 ∈ ℕ ∣ ∀𝑥 ∈ 𝑋 (𝑦 · 𝑥) = 0 } = ∅) ∨ 𝐸 ∈ {𝑦 ∈ ℕ ∣ ∀𝑥 ∈ 𝑋 (𝑦 · 𝑥) = 0 })) |
22 | 18, 21 | syl 17 | . 2 ⊢ (𝐴 ∈ 𝑋 → ((𝐸 = 0 ∧ {𝑦 ∈ ℕ ∣ ∀𝑥 ∈ 𝑋 (𝑦 · 𝑥) = 0 } = ∅) ∨ 𝐸 ∈ {𝑦 ∈ ℕ ∣ ∀𝑥 ∈ 𝑋 (𝑦 · 𝑥) = 0 })) |
23 | 7, 16, 22 | mpjaodan 955 | 1 ⊢ (𝐴 ∈ 𝑋 → (𝐸 · 𝐴) = 0 ) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 395 ∨ wo 843 = wceq 1539 ∈ wcel 2108 ∀wral 3063 {crab 3067 Vcvv 3422 ∅c0 4253 ‘cfv 6418 (class class class)co 7255 0cc0 10802 ℕcn 11903 Basecbs 16840 0gc0g 17067 .gcmg 18615 gExcgex 19048 |
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-cnex 10858 ax-resscn 10859 ax-1cn 10860 ax-icn 10861 ax-addcl 10862 ax-addrcl 10863 ax-mulcl 10864 ax-mulrcl 10865 ax-mulcom 10866 ax-addass 10867 ax-mulass 10868 ax-distr 10869 ax-i2m1 10870 ax-1ne0 10871 ax-1rid 10872 ax-rnegex 10873 ax-rrecex 10874 ax-cnre 10875 ax-pre-lttri 10876 ax-pre-lttrn 10877 ax-pre-ltadd 10878 ax-pre-mulgt0 10879 |
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-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-we 5537 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-pred 6191 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 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-om 7688 df-1st 7804 df-2nd 7805 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-er 8456 df-en 8692 df-dom 8693 df-sdom 8694 df-sup 9131 df-inf 9132 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 df-sub 11137 df-neg 11138 df-nn 11904 df-n0 12164 df-z 12250 df-uz 12512 df-seq 13650 df-mulg 18616 df-gex 19052 |
This theorem is referenced by: gexdvdsi 19103 gexod 19106 gex1 19111 pgpfac1lem3a 19594 |
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