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| Mirrors > Home > ILE Home > Th. List > subcmnd | GIF version | ||
| Description: A submonoid of a commutative monoid is also commutative. (Contributed by Mario Carneiro, 10-Jan-2015.) |
| Ref | Expression |
|---|---|
| subcmnd.h | ⊢ (𝜑 → 𝐻 = (𝐺 ↾s 𝑆)) |
| subcmnd.g | ⊢ (𝜑 → 𝐺 ∈ CMnd) |
| subcmnd.m | ⊢ (𝜑 → 𝐻 ∈ Mnd) |
| subcmnd.s | ⊢ (𝜑 → 𝑆 ∈ 𝑉) |
| Ref | Expression |
|---|---|
| subcmnd | ⊢ (𝜑 → 𝐻 ∈ CMnd) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqidd 2232 | . 2 ⊢ (𝜑 → (Base‘𝐻) = (Base‘𝐻)) | |
| 2 | subcmnd.h | . . 3 ⊢ (𝜑 → 𝐻 = (𝐺 ↾s 𝑆)) | |
| 3 | eqidd 2232 | . . 3 ⊢ (𝜑 → (+g‘𝐺) = (+g‘𝐺)) | |
| 4 | subcmnd.s | . . 3 ⊢ (𝜑 → 𝑆 ∈ 𝑉) | |
| 5 | subcmnd.g | . . 3 ⊢ (𝜑 → 𝐺 ∈ CMnd) | |
| 6 | 2, 3, 4, 5 | ressplusgd 13273 | . 2 ⊢ (𝜑 → (+g‘𝐺) = (+g‘𝐻)) |
| 7 | subcmnd.m | . 2 ⊢ (𝜑 → 𝐻 ∈ Mnd) | |
| 8 | 5 | 3ad2ant1 1045 | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ (Base‘𝐻) ∧ 𝑦 ∈ (Base‘𝐻)) → 𝐺 ∈ CMnd) |
| 9 | eqidd 2232 | . . . . . 6 ⊢ (𝜑 → (Base‘𝐺) = (Base‘𝐺)) | |
| 10 | 2, 9, 5, 4 | ressbasssd 13213 | . . . . 5 ⊢ (𝜑 → (Base‘𝐻) ⊆ (Base‘𝐺)) |
| 11 | 10 | sselda 3228 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ (Base‘𝐻)) → 𝑥 ∈ (Base‘𝐺)) |
| 12 | 11 | 3adant3 1044 | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ (Base‘𝐻) ∧ 𝑦 ∈ (Base‘𝐻)) → 𝑥 ∈ (Base‘𝐺)) |
| 13 | 10 | sselda 3228 | . . . 4 ⊢ ((𝜑 ∧ 𝑦 ∈ (Base‘𝐻)) → 𝑦 ∈ (Base‘𝐺)) |
| 14 | 13 | 3adant2 1043 | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ (Base‘𝐻) ∧ 𝑦 ∈ (Base‘𝐻)) → 𝑦 ∈ (Base‘𝐺)) |
| 15 | eqid 2231 | . . . 4 ⊢ (Base‘𝐺) = (Base‘𝐺) | |
| 16 | eqid 2231 | . . . 4 ⊢ (+g‘𝐺) = (+g‘𝐺) | |
| 17 | 15, 16 | cmncom 13950 | . . 3 ⊢ ((𝐺 ∈ CMnd ∧ 𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺)) → (𝑥(+g‘𝐺)𝑦) = (𝑦(+g‘𝐺)𝑥)) |
| 18 | 8, 12, 14, 17 | syl3anc 1274 | . 2 ⊢ ((𝜑 ∧ 𝑥 ∈ (Base‘𝐻) ∧ 𝑦 ∈ (Base‘𝐻)) → (𝑥(+g‘𝐺)𝑦) = (𝑦(+g‘𝐺)𝑥)) |
| 19 | 1, 6, 7, 18 | iscmnd 13946 | 1 ⊢ (𝜑 → 𝐻 ∈ CMnd) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ w3a 1005 = wceq 1398 ∈ wcel 2202 ‘cfv 5333 (class class class)co 6028 Basecbs 13143 ↾s cress 13144 +gcplusg 13221 Mndcmnd 13560 CMndccmn 13932 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2204 ax-14 2205 ax-ext 2213 ax-sep 4212 ax-pow 4270 ax-pr 4305 ax-un 4536 ax-setind 4641 ax-cnex 8166 ax-resscn 8167 ax-1cn 8168 ax-1re 8169 ax-icn 8170 ax-addcl 8171 ax-addrcl 8172 ax-mulcl 8173 ax-addcom 8175 ax-addass 8177 ax-i2m1 8180 ax-0lt1 8181 ax-0id 8183 ax-rnegex 8184 ax-pre-ltirr 8187 ax-pre-ltadd 8191 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ne 2404 df-nel 2499 df-ral 2516 df-rex 2517 df-rab 2520 df-v 2805 df-sbc 3033 df-dif 3203 df-un 3205 df-in 3207 df-ss 3214 df-nul 3497 df-pw 3658 df-sn 3679 df-pr 3680 df-op 3682 df-uni 3899 df-int 3934 df-br 4094 df-opab 4156 df-mpt 4157 df-id 4396 df-xp 4737 df-rel 4738 df-cnv 4739 df-co 4740 df-dm 4741 df-rn 4742 df-res 4743 df-iota 5293 df-fun 5335 df-fv 5341 df-ov 6031 df-oprab 6032 df-mpo 6033 df-pnf 8259 df-mnf 8260 df-ltxr 8262 df-inn 9187 df-2 9245 df-ndx 13146 df-slot 13147 df-base 13149 df-sets 13150 df-iress 13151 df-plusg 13234 df-cmn 13934 |
| This theorem is referenced by: unitabl 14193 subrgcrng 14301 |
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