| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > crngcom | Structured version Visualization version GIF version | ||
| Description: A commutative ring's multiplication operation is commutative. (Contributed by Mario Carneiro, 7-Jan-2015.) |
| Ref | Expression |
|---|---|
| ringcl.b | ⊢ 𝐵 = (Base‘𝑅) |
| ringcl.t | ⊢ · = (.r‘𝑅) |
| Ref | Expression |
|---|---|
| crngcom | ⊢ ((𝑅 ∈ CRing ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑋 · 𝑌) = (𝑌 · 𝑋)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2765 | . . 3 ⊢ (mulGrp‘𝑅) = (mulGrp‘𝑅) | |
| 2 | 1 | crngmgp 20367 | . 2 ⊢ (𝑅 ∈ CRing → (mulGrp‘𝑅) ∈ CMnd) |
| 3 | ringcl.b | . . . 4 ⊢ 𝐵 = (Base‘𝑅) | |
| 4 | 1, 3 | mgpbas 20265 | . . 3 ⊢ 𝐵 = (Base‘(mulGrp‘𝑅)) |
| 5 | ringcl.t | . . . 4 ⊢ · = (.r‘𝑅) | |
| 6 | 1, 5 | mgpplusg 20264 | . . 3 ⊢ · = (+g‘(mulGrp‘𝑅)) |
| 7 | 4, 6 | cmncom 19912 | . 2 ⊢ (((mulGrp‘𝑅) ∈ CMnd ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑋 · 𝑌) = (𝑌 · 𝑋)) |
| 8 | 2, 7 | syl3an1 1181 | 1 ⊢ ((𝑅 ∈ CRing ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑋 · 𝑌) = (𝑌 · 𝑋)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ w3a 1103 = wceq 1570 ∈ wcel 2146 ‘cfv 6540 (class class class)co 7419 Basecbs 17291 .rcmulr 17333 CMndccmn 19894 mulGrpcmgp 20260 CRingccrg 20360 |
| 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 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2737 ax-sep 5259 ax-nul 5271 ax-pow 5338 ax-pr 5406 ax-un 7742 ax-cnex 11171 ax-resscn 11172 ax-1cn 11173 ax-icn 11174 ax-addcl 11175 ax-addrcl 11176 ax-mulcl 11177 ax-mulrcl 11178 ax-mulcom 11179 ax-addass 11180 ax-mulass 11181 ax-distr 11182 ax-i2m1 11183 ax-1ne0 11184 ax-1rid 11185 ax-rnegex 11186 ax-rrecex 11187 ax-cnre 11188 ax-pre-lttri 11189 ax-pre-lttrn 11190 ax-pre-ltadd 11191 ax-pre-mulgt0 11192 |
| 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 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-nel 3067 df-ral 3082 df-rex 3092 df-reu 3372 df-rab 3419 df-v 3459 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4287 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-iun 4960 df-br 5112 df-opab 5176 df-mpt 5195 df-tr 5221 df-id 5558 df-eprel 5563 df-po 5571 df-so 5572 df-fr 5616 df-we 5618 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-pred 6306 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6496 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-riota 7376 df-ov 7422 df-oprab 7423 df-mpo 7424 df-om 7869 df-2nd 7993 df-frecs 8284 df-wrecs 8315 df-recs 8364 df-rdg 8403 df-er 8700 df-en 8950 df-dom 8951 df-sdom 8952 df-pnf 11260 df-mnf 11261 df-xr 11262 df-ltxr 11263 df-le 11264 df-sub 11458 df-neg 11459 df-nn 12249 df-2 12318 df-sets 17246 df-slot 17264 df-ndx 17276 df-base 17292 df-plusg 17345 df-cmn 19896 df-mgp 20261 df-cring 20362 |
| This theorem is used by: crngcomd 20381 crngoppr 20469 unitmulclb 20509 rdivmuldivd 20541 crngrhmfo 20624 idsrngd 21009 rmodislmodlem 21100 lmhmvsca 21216 quscrng 21473 frlmphl 21981 psrcom 22167 psrass23 22168 mplcoe2 22242 mamutpos 22665 mat1dimcrng 22684 dmatcrng 22709 scmatcrng 22728 mdetrsca 22810 mdetmul 22830 cramerimp 22893 fta1glem1 26376 ringlsmss1 33771 mxidlprm 33817 extdg1id 34120 minplyirred 34165 mdetlap 34286 imacrhmcl 43346 idomcanr 49170 |
| Copyright terms: Public domain | W3C validator |