Theorem cntzsgrpcl 19365

Description: Centralizers are closed under the semigroup operation. (Contributed by AV, 17-Feb-2025.)

Hypotheses

Ref	Expression
cntzsgrpcl.b	⊢ 𝐵 = (Base‘𝑀)
cntzsgrpcl.z	⊢ 𝑍 = (Cntz‘𝑀)
cntzsgrpcl.c	⊢ 𝐶 = (𝑍‘𝑆)

Assertion

Ref	Expression
cntzsgrpcl	⊢ ((𝑀 ∈ Smgrp ∧ 𝑆 ⊆ 𝐵) → ∀𝑦 ∈ 𝐶 ∀𝑧 ∈ 𝐶 (𝑦(+g‘𝑀)𝑧) ∈ 𝐶)

Distinct variable groups:   𝑦,𝐵,𝑧   𝑦,𝐶,𝑧   𝑦,𝑀,𝑧   𝑦,𝑆,𝑧   𝑦,𝑍,𝑧

Proof of Theorem cntzsgrpcl

Dummy variable 𝑥 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		simpll 767	. . . 4 ⊢ (((𝑀 ∈ Smgrp ∧ 𝑆 ⊆ 𝐵) ∧ (𝑦 ∈ 𝐶 ∧ 𝑧 ∈ 𝐶)) → 𝑀 ∈ Smgrp)
2		cntzsgrpcl.c	. . . . . 6 ⊢ 𝐶 = (𝑍‘𝑆)
3		cntzsgrpcl.b	. . . . . . 7 ⊢ 𝐵 = (Base‘𝑀)
4		cntzsgrpcl.z	. . . . . . 7 ⊢ 𝑍 = (Cntz‘𝑀)
5	3, 4	cntzssv 19359	. . . . . 6 ⊢ (𝑍‘𝑆) ⊆ 𝐵
6	2, 5	eqsstri 4030	. . . . 5 ⊢ 𝐶 ⊆ 𝐵
7		simprl 771	. . . . 5 ⊢ (((𝑀 ∈ Smgrp ∧ 𝑆 ⊆ 𝐵) ∧ (𝑦 ∈ 𝐶 ∧ 𝑧 ∈ 𝐶)) → 𝑦 ∈ 𝐶)
8	6, 7	sselid 3993	. . . 4 ⊢ (((𝑀 ∈ Smgrp ∧ 𝑆 ⊆ 𝐵) ∧ (𝑦 ∈ 𝐶 ∧ 𝑧 ∈ 𝐶)) → 𝑦 ∈ 𝐵)
9		simprr 773	. . . . 5 ⊢ (((𝑀 ∈ Smgrp ∧ 𝑆 ⊆ 𝐵) ∧ (𝑦 ∈ 𝐶 ∧ 𝑧 ∈ 𝐶)) → 𝑧 ∈ 𝐶)
10	6, 9	sselid 3993	. . . 4 ⊢ (((𝑀 ∈ Smgrp ∧ 𝑆 ⊆ 𝐵) ∧ (𝑦 ∈ 𝐶 ∧ 𝑧 ∈ 𝐶)) → 𝑧 ∈ 𝐵)
11		eqid 2735	. . . . 5 ⊢ (+g‘𝑀) = (+g‘𝑀)
12	3, 11	sgrpcl 18752	. . . 4 ⊢ ((𝑀 ∈ Smgrp ∧ 𝑦 ∈ 𝐵 ∧ 𝑧 ∈ 𝐵) → (𝑦(+g‘𝑀)𝑧) ∈ 𝐵)
13	1, 8, 10, 12	syl3anc 1370	. . 3 ⊢ (((𝑀 ∈ Smgrp ∧ 𝑆 ⊆ 𝐵) ∧ (𝑦 ∈ 𝐶 ∧ 𝑧 ∈ 𝐶)) → (𝑦(+g‘𝑀)𝑧) ∈ 𝐵)
14	1	adantr 480	. . . . . 6 ⊢ ((((𝑀 ∈ Smgrp ∧ 𝑆 ⊆ 𝐵) ∧ (𝑦 ∈ 𝐶 ∧ 𝑧 ∈ 𝐶)) ∧ 𝑥 ∈ 𝑆) → 𝑀 ∈ Smgrp)
15	8	adantr 480	. . . . . 6 ⊢ ((((𝑀 ∈ Smgrp ∧ 𝑆 ⊆ 𝐵) ∧ (𝑦 ∈ 𝐶 ∧ 𝑧 ∈ 𝐶)) ∧ 𝑥 ∈ 𝑆) → 𝑦 ∈ 𝐵)
16	10	adantr 480	. . . . . 6 ⊢ ((((𝑀 ∈ Smgrp ∧ 𝑆 ⊆ 𝐵) ∧ (𝑦 ∈ 𝐶 ∧ 𝑧 ∈ 𝐶)) ∧ 𝑥 ∈ 𝑆) → 𝑧 ∈ 𝐵)
17		simpr 484	. . . . . . . 8 ⊢ ((𝑀 ∈ Smgrp ∧ 𝑆 ⊆ 𝐵) → 𝑆 ⊆ 𝐵)
18	17	sselda 3995	. . . . . . 7 ⊢ (((𝑀 ∈ Smgrp ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ 𝑆) → 𝑥 ∈ 𝐵)
19	18	adantlr 715	. . . . . 6 ⊢ ((((𝑀 ∈ Smgrp ∧ 𝑆 ⊆ 𝐵) ∧ (𝑦 ∈ 𝐶 ∧ 𝑧 ∈ 𝐶)) ∧ 𝑥 ∈ 𝑆) → 𝑥 ∈ 𝐵)
20	3, 11	sgrpass 18751	. . . . . 6 ⊢ ((𝑀 ∈ Smgrp ∧ (𝑦 ∈ 𝐵 ∧ 𝑧 ∈ 𝐵 ∧ 𝑥 ∈ 𝐵)) → ((𝑦(+g‘𝑀)𝑧)(+g‘𝑀)𝑥) = (𝑦(+g‘𝑀)(𝑧(+g‘𝑀)𝑥)))
21	14, 15, 16, 19, 20	syl13anc 1371	. . . . 5 ⊢ ((((𝑀 ∈ Smgrp ∧ 𝑆 ⊆ 𝐵) ∧ (𝑦 ∈ 𝐶 ∧ 𝑧 ∈ 𝐶)) ∧ 𝑥 ∈ 𝑆) → ((𝑦(+g‘𝑀)𝑧)(+g‘𝑀)𝑥) = (𝑦(+g‘𝑀)(𝑧(+g‘𝑀)𝑥)))
22	2	eleq2i 2831	. . . . . . . . 9 ⊢ (𝑧 ∈ 𝐶 ↔ 𝑧 ∈ (𝑍‘𝑆))
23	11, 4	cntzi 19360	. . . . . . . . 9 ⊢ ((𝑧 ∈ (𝑍‘𝑆) ∧ 𝑥 ∈ 𝑆) → (𝑧(+g‘𝑀)𝑥) = (𝑥(+g‘𝑀)𝑧))
24	22, 23	sylanb 581	. . . . . . . 8 ⊢ ((𝑧 ∈ 𝐶 ∧ 𝑥 ∈ 𝑆) → (𝑧(+g‘𝑀)𝑥) = (𝑥(+g‘𝑀)𝑧))
25	9, 24	sylan 580	. . . . . . 7 ⊢ ((((𝑀 ∈ Smgrp ∧ 𝑆 ⊆ 𝐵) ∧ (𝑦 ∈ 𝐶 ∧ 𝑧 ∈ 𝐶)) ∧ 𝑥 ∈ 𝑆) → (𝑧(+g‘𝑀)𝑥) = (𝑥(+g‘𝑀)𝑧))
26	25	oveq2d 7447	. . . . . 6 ⊢ ((((𝑀 ∈ Smgrp ∧ 𝑆 ⊆ 𝐵) ∧ (𝑦 ∈ 𝐶 ∧ 𝑧 ∈ 𝐶)) ∧ 𝑥 ∈ 𝑆) → (𝑦(+g‘𝑀)(𝑧(+g‘𝑀)𝑥)) = (𝑦(+g‘𝑀)(𝑥(+g‘𝑀)𝑧)))
27	3, 11	sgrpass 18751	. . . . . . 7 ⊢ ((𝑀 ∈ Smgrp ∧ (𝑦 ∈ 𝐵 ∧ 𝑥 ∈ 𝐵 ∧ 𝑧 ∈ 𝐵)) → ((𝑦(+g‘𝑀)𝑥)(+g‘𝑀)𝑧) = (𝑦(+g‘𝑀)(𝑥(+g‘𝑀)𝑧)))
28	14, 15, 19, 16, 27	syl13anc 1371	. . . . . 6 ⊢ ((((𝑀 ∈ Smgrp ∧ 𝑆 ⊆ 𝐵) ∧ (𝑦 ∈ 𝐶 ∧ 𝑧 ∈ 𝐶)) ∧ 𝑥 ∈ 𝑆) → ((𝑦(+g‘𝑀)𝑥)(+g‘𝑀)𝑧) = (𝑦(+g‘𝑀)(𝑥(+g‘𝑀)𝑧)))
29	2	eleq2i 2831	. . . . . . . . 9 ⊢ (𝑦 ∈ 𝐶 ↔ 𝑦 ∈ (𝑍‘𝑆))
30	11, 4	cntzi 19360	. . . . . . . . 9 ⊢ ((𝑦 ∈ (𝑍‘𝑆) ∧ 𝑥 ∈ 𝑆) → (𝑦(+g‘𝑀)𝑥) = (𝑥(+g‘𝑀)𝑦))
31	29, 30	sylanb 581	. . . . . . . 8 ⊢ ((𝑦 ∈ 𝐶 ∧ 𝑥 ∈ 𝑆) → (𝑦(+g‘𝑀)𝑥) = (𝑥(+g‘𝑀)𝑦))
32	7, 31	sylan 580	. . . . . . 7 ⊢ ((((𝑀 ∈ Smgrp ∧ 𝑆 ⊆ 𝐵) ∧ (𝑦 ∈ 𝐶 ∧ 𝑧 ∈ 𝐶)) ∧ 𝑥 ∈ 𝑆) → (𝑦(+g‘𝑀)𝑥) = (𝑥(+g‘𝑀)𝑦))
33	32	oveq1d 7446	. . . . . 6 ⊢ ((((𝑀 ∈ Smgrp ∧ 𝑆 ⊆ 𝐵) ∧ (𝑦 ∈ 𝐶 ∧ 𝑧 ∈ 𝐶)) ∧ 𝑥 ∈ 𝑆) → ((𝑦(+g‘𝑀)𝑥)(+g‘𝑀)𝑧) = ((𝑥(+g‘𝑀)𝑦)(+g‘𝑀)𝑧))
34	26, 28, 33	3eqtr2d 2781	. . . . 5 ⊢ ((((𝑀 ∈ Smgrp ∧ 𝑆 ⊆ 𝐵) ∧ (𝑦 ∈ 𝐶 ∧ 𝑧 ∈ 𝐶)) ∧ 𝑥 ∈ 𝑆) → (𝑦(+g‘𝑀)(𝑧(+g‘𝑀)𝑥)) = ((𝑥(+g‘𝑀)𝑦)(+g‘𝑀)𝑧))
35	3, 11	sgrpass 18751	. . . . . 6 ⊢ ((𝑀 ∈ Smgrp ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵 ∧ 𝑧 ∈ 𝐵)) → ((𝑥(+g‘𝑀)𝑦)(+g‘𝑀)𝑧) = (𝑥(+g‘𝑀)(𝑦(+g‘𝑀)𝑧)))
36	14, 19, 15, 16, 35	syl13anc 1371	. . . . 5 ⊢ ((((𝑀 ∈ Smgrp ∧ 𝑆 ⊆ 𝐵) ∧ (𝑦 ∈ 𝐶 ∧ 𝑧 ∈ 𝐶)) ∧ 𝑥 ∈ 𝑆) → ((𝑥(+g‘𝑀)𝑦)(+g‘𝑀)𝑧) = (𝑥(+g‘𝑀)(𝑦(+g‘𝑀)𝑧)))
37	21, 34, 36	3eqtrd 2779	. . . 4 ⊢ ((((𝑀 ∈ Smgrp ∧ 𝑆 ⊆ 𝐵) ∧ (𝑦 ∈ 𝐶 ∧ 𝑧 ∈ 𝐶)) ∧ 𝑥 ∈ 𝑆) → ((𝑦(+g‘𝑀)𝑧)(+g‘𝑀)𝑥) = (𝑥(+g‘𝑀)(𝑦(+g‘𝑀)𝑧)))
38	37	ralrimiva 3144	. . 3 ⊢ (((𝑀 ∈ Smgrp ∧ 𝑆 ⊆ 𝐵) ∧ (𝑦 ∈ 𝐶 ∧ 𝑧 ∈ 𝐶)) → ∀𝑥 ∈ 𝑆 ((𝑦(+g‘𝑀)𝑧)(+g‘𝑀)𝑥) = (𝑥(+g‘𝑀)(𝑦(+g‘𝑀)𝑧)))
39	2	eleq2i 2831	. . . . 5 ⊢ ((𝑦(+g‘𝑀)𝑧) ∈ 𝐶 ↔ (𝑦(+g‘𝑀)𝑧) ∈ (𝑍‘𝑆))
40	3, 11, 4	elcntz 19353	. . . . 5 ⊢ (𝑆 ⊆ 𝐵 → ((𝑦(+g‘𝑀)𝑧) ∈ (𝑍‘𝑆) ↔ ((𝑦(+g‘𝑀)𝑧) ∈ 𝐵 ∧ ∀𝑥 ∈ 𝑆 ((𝑦(+g‘𝑀)𝑧)(+g‘𝑀)𝑥) = (𝑥(+g‘𝑀)(𝑦(+g‘𝑀)𝑧)))))
41	39, 40	bitrid 283	. . . 4 ⊢ (𝑆 ⊆ 𝐵 → ((𝑦(+g‘𝑀)𝑧) ∈ 𝐶 ↔ ((𝑦(+g‘𝑀)𝑧) ∈ 𝐵 ∧ ∀𝑥 ∈ 𝑆 ((𝑦(+g‘𝑀)𝑧)(+g‘𝑀)𝑥) = (𝑥(+g‘𝑀)(𝑦(+g‘𝑀)𝑧)))))
42	41	ad2antlr 727	. . 3 ⊢ (((𝑀 ∈ Smgrp ∧ 𝑆 ⊆ 𝐵) ∧ (𝑦 ∈ 𝐶 ∧ 𝑧 ∈ 𝐶)) → ((𝑦(+g‘𝑀)𝑧) ∈ 𝐶 ↔ ((𝑦(+g‘𝑀)𝑧) ∈ 𝐵 ∧ ∀𝑥 ∈ 𝑆 ((𝑦(+g‘𝑀)𝑧)(+g‘𝑀)𝑥) = (𝑥(+g‘𝑀)(𝑦(+g‘𝑀)𝑧)))))
43	13, 38, 42	mpbir2and 713	. 2 ⊢ (((𝑀 ∈ Smgrp ∧ 𝑆 ⊆ 𝐵) ∧ (𝑦 ∈ 𝐶 ∧ 𝑧 ∈ 𝐶)) → (𝑦(+g‘𝑀)𝑧) ∈ 𝐶)
44	43	ralrimivva 3200	1 ⊢ ((𝑀 ∈ Smgrp ∧ 𝑆 ⊆ 𝐵) → ∀𝑦 ∈ 𝐶 ∀𝑧 ∈ 𝐶 (𝑦(+g‘𝑀)𝑧) ∈ 𝐶)

Syntax hints:   → wi 4   ↔ wb 206   ∧ wa 395   = wceq 1537   ∈ wcel 2106  ∀wral 3059   ⊆ wss 3963  ‘cfv 6563  (class class class)co 7431  Basecbs 17245  +_gcplusg 17298  Smgrpcsgrp 18744  Cntzccntz 19346

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-rep 5285  ax-sep 5302  ax-nul 5312  ax-pow 5371  ax-pr 5438

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  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-ral 3060  df-rex 3069  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-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-id 5583  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-iota 6516  df-fun 6565  df-fn 6566  df-f 6567  df-f1 6568  df-fo 6569  df-f1o 6570  df-fv 6571  df-ov 7434  df-mgm 18666  df-sgrp 18745  df-cntz 19348

This theorem is referenced by:  cntzsubrng  20584