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Mirrors > Home > MPE Home > Th. List > cntzcmn | Structured version Visualization version GIF version |
Description: The centralizer of any subset in a commutative monoid is the whole monoid. (Contributed by Mario Carneiro, 3-Oct-2015.) |
Ref | Expression |
---|---|
cntzcmn.b | ⊢ 𝐵 = (Base‘𝐺) |
cntzcmn.z | ⊢ 𝑍 = (Cntz‘𝐺) |
Ref | Expression |
---|---|
cntzcmn | ⊢ ((𝐺 ∈ CMnd ∧ 𝑆 ⊆ 𝐵) → (𝑍‘𝑆) = 𝐵) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cntzcmn.b | . . . 4 ⊢ 𝐵 = (Base‘𝐺) | |
2 | cntzcmn.z | . . . 4 ⊢ 𝑍 = (Cntz‘𝐺) | |
3 | 1, 2 | cntzssv 18934 | . . 3 ⊢ (𝑍‘𝑆) ⊆ 𝐵 |
4 | 3 | a1i 11 | . 2 ⊢ ((𝐺 ∈ CMnd ∧ 𝑆 ⊆ 𝐵) → (𝑍‘𝑆) ⊆ 𝐵) |
5 | simpl1 1190 | . . . . . . 7 ⊢ (((𝐺 ∈ CMnd ∧ 𝑆 ⊆ 𝐵 ∧ 𝑥 ∈ 𝐵) ∧ 𝑦 ∈ 𝑆) → 𝐺 ∈ CMnd) | |
6 | simpl3 1192 | . . . . . . 7 ⊢ (((𝐺 ∈ CMnd ∧ 𝑆 ⊆ 𝐵 ∧ 𝑥 ∈ 𝐵) ∧ 𝑦 ∈ 𝑆) → 𝑥 ∈ 𝐵) | |
7 | simp2 1136 | . . . . . . . 8 ⊢ ((𝐺 ∈ CMnd ∧ 𝑆 ⊆ 𝐵 ∧ 𝑥 ∈ 𝐵) → 𝑆 ⊆ 𝐵) | |
8 | 7 | sselda 3921 | . . . . . . 7 ⊢ (((𝐺 ∈ CMnd ∧ 𝑆 ⊆ 𝐵 ∧ 𝑥 ∈ 𝐵) ∧ 𝑦 ∈ 𝑆) → 𝑦 ∈ 𝐵) |
9 | eqid 2738 | . . . . . . . 8 ⊢ (+g‘𝐺) = (+g‘𝐺) | |
10 | 1, 9 | cmncom 19403 | . . . . . . 7 ⊢ ((𝐺 ∈ CMnd ∧ 𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵) → (𝑥(+g‘𝐺)𝑦) = (𝑦(+g‘𝐺)𝑥)) |
11 | 5, 6, 8, 10 | syl3anc 1370 | . . . . . 6 ⊢ (((𝐺 ∈ CMnd ∧ 𝑆 ⊆ 𝐵 ∧ 𝑥 ∈ 𝐵) ∧ 𝑦 ∈ 𝑆) → (𝑥(+g‘𝐺)𝑦) = (𝑦(+g‘𝐺)𝑥)) |
12 | 11 | ralrimiva 3103 | . . . . 5 ⊢ ((𝐺 ∈ CMnd ∧ 𝑆 ⊆ 𝐵 ∧ 𝑥 ∈ 𝐵) → ∀𝑦 ∈ 𝑆 (𝑥(+g‘𝐺)𝑦) = (𝑦(+g‘𝐺)𝑥)) |
13 | 1, 9, 2 | cntzel 18929 | . . . . . 6 ⊢ ((𝑆 ⊆ 𝐵 ∧ 𝑥 ∈ 𝐵) → (𝑥 ∈ (𝑍‘𝑆) ↔ ∀𝑦 ∈ 𝑆 (𝑥(+g‘𝐺)𝑦) = (𝑦(+g‘𝐺)𝑥))) |
14 | 13 | 3adant1 1129 | . . . . 5 ⊢ ((𝐺 ∈ CMnd ∧ 𝑆 ⊆ 𝐵 ∧ 𝑥 ∈ 𝐵) → (𝑥 ∈ (𝑍‘𝑆) ↔ ∀𝑦 ∈ 𝑆 (𝑥(+g‘𝐺)𝑦) = (𝑦(+g‘𝐺)𝑥))) |
15 | 12, 14 | mpbird 256 | . . . 4 ⊢ ((𝐺 ∈ CMnd ∧ 𝑆 ⊆ 𝐵 ∧ 𝑥 ∈ 𝐵) → 𝑥 ∈ (𝑍‘𝑆)) |
16 | 15 | 3expia 1120 | . . 3 ⊢ ((𝐺 ∈ CMnd ∧ 𝑆 ⊆ 𝐵) → (𝑥 ∈ 𝐵 → 𝑥 ∈ (𝑍‘𝑆))) |
17 | 16 | ssrdv 3927 | . 2 ⊢ ((𝐺 ∈ CMnd ∧ 𝑆 ⊆ 𝐵) → 𝐵 ⊆ (𝑍‘𝑆)) |
18 | 4, 17 | eqssd 3938 | 1 ⊢ ((𝐺 ∈ CMnd ∧ 𝑆 ⊆ 𝐵) → (𝑍‘𝑆) = 𝐵) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 396 ∧ w3a 1086 = wceq 1539 ∈ wcel 2106 ∀wral 3064 ⊆ wss 3887 ‘cfv 6433 (class class class)co 7275 Basecbs 16912 +gcplusg 16962 Cntzccntz 18921 CMndccmn 19386 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-rep 5209 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-ral 3069 df-rex 3070 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-iun 4926 df-br 5075 df-opab 5137 df-mpt 5158 df-id 5489 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-ov 7278 df-cntz 18923 df-cmn 19388 |
This theorem is referenced by: cntzcmnss 19442 cntzcmnf 19446 ablcntzd 19458 gsumadd 19524 |
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