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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 2762 | . . . 4 ⊢ (Base‘𝑀) = (Base‘𝑀) | |
| 2 | 1 | cntrss 19459 | . . 3 ⊢ (Cntr‘𝑀) ⊆ (Base‘𝑀) |
| 3 | cntrcmnd.z | . . . 4 ⊢ 𝑍 = (𝑀 ↾s (Cntr‘𝑀)) | |
| 4 | 3, 1 | ressbas2 17334 | . . 3 ⊢ ((Cntr‘𝑀) ⊆ (Base‘𝑀) → (Cntr‘𝑀) = (Base‘𝑍)) |
| 5 | 2, 4 | mp1i 14 | . 2 ⊢ (𝑀 ∈ Mnd → (Cntr‘𝑀) = (Base‘𝑍)) |
| 6 | fvex 6895 | . . 3 ⊢ (Cntr‘𝑀) ∈ V | |
| 7 | eqid 2762 | . . . 4 ⊢ (+g‘𝑀) = (+g‘𝑀) | |
| 8 | 3, 7 | ressplusg 17380 | . . 3 ⊢ ((Cntr‘𝑀) ∈ V → (+g‘𝑀) = (+g‘𝑍)) |
| 9 | 6, 8 | mp1i 14 | . 2 ⊢ (𝑀 ∈ Mnd → (+g‘𝑀) = (+g‘𝑍)) |
| 10 | eqid 2762 | . . . . 5 ⊢ (Cntz‘𝑀) = (Cntz‘𝑀) | |
| 11 | 1, 10 | cntrval 19447 | . . . 4 ⊢ ((Cntz‘𝑀)‘(Base‘𝑀)) = (Cntr‘𝑀) |
| 12 | ssid 3956 | . . . . 5 ⊢ (Base‘𝑀) ⊆ (Base‘𝑀) | |
| 13 | 1, 10 | cntzsubm 19466 | . . . . 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 2867 | . . 3 ⊢ (𝑀 ∈ Mnd → (Cntr‘𝑀) ∈ (SubMnd‘𝑀)) |
| 16 | 3 | submmnd 18923 | . . 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 3932 | . . 3 ⊢ ((𝑀 ∈ Mnd ∧ 𝑥 ∈ (Cntr‘𝑀) ∧ 𝑦 ∈ (Cntr‘𝑀)) → 𝑦 ∈ (Base‘𝑀)) |
| 21 | eqid 2762 | . . . 4 ⊢ (Cntr‘𝑀) = (Cntr‘𝑀) | |
| 22 | 1, 7, 21 | cntri 19460 | . . 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 19922 | 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 3453 ⊆ wss 3902 ‘cfv 6537 (class class class)co 7416 Basecbs 17305 ↾s cress 17326 +gcplusg 17346 Mndcmnd 18838 SubMndcsubmnd 18891 Cntzccntz 19443 Cntrccntr 19444 CMndccmn 19908 |
| 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 2215 ax-ext 2734 ax-rep 5236 ax-sep 5255 ax-nul 5267 ax-pow 5334 ax-pr 5402 ax-un 7739 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 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3064 df-ral 3079 df-rex 3089 df-rmo 3367 df-reu 3368 df-rab 3415 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4283 df-if 4486 df-pw 4562 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-iun 4956 df-br 5108 df-opab 5172 df-mpt 5191 df-tr 5217 df-id 5554 df-eprel 5559 df-po 5567 df-so 5568 df-fr 5612 df-we 5614 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-pred 6303 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7373 df-ov 7419 df-oprab 7420 df-mpo 7421 df-om 7866 df-2nd 7990 df-frecs 8283 df-wrecs 8314 df-recs 8363 df-rdg 8402 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 17260 df-slot 17278 df-ndx 17290 df-base 17306 df-ress 17327 df-plusg 17359 df-0g 17530 df-mgm 18734 df-sgrp 18823 df-mnd 18839 df-submnd 18893 df-cntz 19445 df-cntr 19446 df-cmn 19910 |
| This theorem is used by: cntrabl 19971 cntrcrng 33508 |
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