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| Mirrors > Home > MPE Home > Th. List > cntrcmnd | Structured version Visualization version GIF version | ||
| Description: The center of a monoid is a commutative submonoid. (Contributed by Thierry Arnoux, 21-Aug-2023.) |
| Ref | Expression |
|---|---|
| cntrcmnd.z | ⊢ 𝑍 = (𝑀 ↾s (Cntr‘𝑀)) |
| Ref | Expression |
|---|---|
| cntrcmnd | ⊢ (𝑀 ∈ Mnd → 𝑍 ∈ CMnd) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2760 | . . . 4 ⊢ (Base‘𝑀) = (Base‘𝑀) | |
| 2 | 1 | cntrss 19461 | . . 3 ⊢ (Cntr‘𝑀) ⊆ (Base‘𝑀) |
| 3 | cntrcmnd.z | . . . 4 ⊢ 𝑍 = (𝑀 ↾s (Cntr‘𝑀)) | |
| 4 | 3, 1 | ressbas2 17333 | . . 3 ⊢ ((Cntr‘𝑀) ⊆ (Base‘𝑀) → (Cntr‘𝑀) = (Base‘𝑍)) |
| 5 | 2, 4 | mp1i 14 | . 2 ⊢ (𝑀 ∈ Mnd → (Cntr‘𝑀) = (Base‘𝑍)) |
| 6 | fvex 6892 | . . 3 ⊢ (Cntr‘𝑀) ∈ V | |
| 7 | eqid 2760 | . . . 4 ⊢ (+g‘𝑀) = (+g‘𝑀) | |
| 8 | 3, 7 | ressplusg 17379 | . . 3 ⊢ ((Cntr‘𝑀) ∈ V → (+g‘𝑀) = (+g‘𝑍)) |
| 9 | 6, 8 | mp1i 14 | . 2 ⊢ (𝑀 ∈ Mnd → (+g‘𝑀) = (+g‘𝑍)) |
| 10 | eqid 2760 | . . . . 5 ⊢ (Cntz‘𝑀) = (Cntz‘𝑀) | |
| 11 | 1, 10 | cntrval 19449 | . . . 4 ⊢ ((Cntz‘𝑀)‘(Base‘𝑀)) = (Cntr‘𝑀) |
| 12 | ssid 3953 | . . . . 5 ⊢ (Base‘𝑀) ⊆ (Base‘𝑀) | |
| 13 | 1, 10 | cntzsubm 19468 | . . . . 5 ⊢ ((𝑀 ∈ Mnd ∧ (Base‘𝑀) ⊆ (Base‘𝑀)) → ((Cntz‘𝑀)‘(Base‘𝑀)) ∈ (SubMnd‘𝑀)) |
| 14 | 12, 13 | mpan2 704 | . . . 4 ⊢ (𝑀 ∈ Mnd → ((Cntz‘𝑀)‘(Base‘𝑀)) ∈ (SubMnd‘𝑀)) |
| 15 | 11, 14 | eqeltrrid 2865 | . . 3 ⊢ (𝑀 ∈ Mnd → (Cntr‘𝑀) ∈ (SubMnd‘𝑀)) |
| 16 | 3 | submmnd 18925 | . . 3 ⊢ ((Cntr‘𝑀) ∈ (SubMnd‘𝑀) → 𝑍 ∈ Mnd) |
| 17 | 15, 16 | syl 18 | . 2 ⊢ (𝑀 ∈ Mnd → 𝑍 ∈ Mnd) |
| 18 | simp2 1155 | . . 3 ⊢ ((𝑀 ∈ Mnd ∧ 𝑥 ∈ (Cntr‘𝑀) ∧ 𝑦 ∈ (Cntr‘𝑀)) → 𝑥 ∈ (Cntr‘𝑀)) | |
| 19 | simp3 1156 | . . . 4 ⊢ ((𝑀 ∈ Mnd ∧ 𝑥 ∈ (Cntr‘𝑀) ∧ 𝑦 ∈ (Cntr‘𝑀)) → 𝑦 ∈ (Cntr‘𝑀)) | |
| 20 | 2, 19 | sselid 3929 | . . 3 ⊢ ((𝑀 ∈ Mnd ∧ 𝑥 ∈ (Cntr‘𝑀) ∧ 𝑦 ∈ (Cntr‘𝑀)) → 𝑦 ∈ (Base‘𝑀)) |
| 21 | eqid 2760 | . . . 4 ⊢ (Cntr‘𝑀) = (Cntr‘𝑀) | |
| 22 | 1, 7, 21 | cntri 19462 | . . 3 ⊢ ((𝑥 ∈ (Cntr‘𝑀) ∧ 𝑦 ∈ (Base‘𝑀)) → (𝑥(+g‘𝑀)𝑦) = (𝑦(+g‘𝑀)𝑥)) |
| 23 | 18, 20, 22 | syl2anc 596 | . 2 ⊢ ((𝑀 ∈ Mnd ∧ 𝑥 ∈ (Cntr‘𝑀) ∧ 𝑦 ∈ (Cntr‘𝑀)) → (𝑥(+g‘𝑀)𝑦) = (𝑦(+g‘𝑀)𝑥)) |
| 24 | 5, 9, 17, 23 | iscmnd 19924 | 1 ⊢ (𝑀 ∈ Mnd → 𝑍 ∈ CMnd) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ w3a 1103 = wceq 1570 ∈ wcel 2145 Vcvv 3450 ⊆ wss 3899 ‘cfv 6533 (class class class)co 7414 Basecbs 17304 ↾s cress 17325 +gcplusg 17345 Mndcmnd 18839 SubMndcsubmnd 18893 Cntzccntz 19445 Cntrccntr 19446 CMndccmn 19910 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-rep 5232 ax-sep 5251 ax-nul 5263 ax-pow 5330 ax-pr 5398 ax-un 7737 ax-cnex 11183 ax-resscn 11184 ax-1cn 11185 ax-icn 11186 ax-addcl 11187 ax-addrcl 11188 ax-mulcl 11189 ax-mulrcl 11190 ax-mulcom 11191 ax-addass 11192 ax-mulass 11193 ax-distr 11194 ax-i2m1 11195 ax-1ne0 11196 ax-1rid 11197 ax-rnegex 11198 ax-rrecex 11199 ax-cnre 11200 ax-pre-lttri 11201 ax-pre-lttrn 11202 ax-pre-ltadd 11203 ax-pre-mulgt0 11204 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5550 df-eprel 5555 df-po 5563 df-so 5564 df-fr 5608 df-we 5610 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-pred 6299 df-ord 6360 df-on 6361 df-lim 6362 df-suc 6363 df-iota 6489 df-fun 6535 df-fn 6536 df-f 6537 df-f1 6538 df-fo 6539 df-f1o 6540 df-fv 6541 df-riota 7371 df-ov 7417 df-oprab 7418 df-mpo 7419 df-om 7864 df-2nd 7988 df-frecs 8281 df-wrecs 8312 df-recs 8361 df-rdg 8400 df-er 8699 df-en 8956 df-dom 8957 df-sdom 8958 df-pnf 11272 df-mnf 11273 df-xr 11274 df-ltxr 11275 df-le 11276 df-sub 11470 df-neg 11471 df-nn 12261 df-2 12330 df-sets 17259 df-slot 17277 df-ndx 17289 df-base 17305 df-ress 17326 df-plusg 17358 df-0g 17529 df-mgm 18733 df-sgrp 18824 df-mnd 18840 df-submnd 18895 df-cntz 19447 df-cntr 19448 df-cmn 19912 |
| This theorem is used by: cntrabl 19973 cntrcrng 33524 |
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