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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 2235 | . 2 ⊢ (𝜑 → (Base‘𝐻) = (Base‘𝐻)) | |
| 2 | subcmnd.h | . . 3 ⊢ (𝜑 → 𝐻 = (𝐺 ↾s 𝑆)) | |
| 3 | eqidd 2235 | . . 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 13426 | . 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 2235 | . . . . . 6 ⊢ (𝜑 → (Base‘𝐺) = (Base‘𝐺)) | |
| 10 | 2, 9, 5, 4 | ressbasssd 13366 | . . . . 5 ⊢ (𝜑 → (Base‘𝐻) ⊆ (Base‘𝐺)) |
| 11 | 10 | sselda 3242 | . . . 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 3242 | . . . 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 2234 | . . . 4 ⊢ (Base‘𝐺) = (Base‘𝐺) | |
| 16 | eqid 2234 | . . . 4 ⊢ (+g‘𝐺) = (+g‘𝐺) | |
| 17 | 15, 16 | cmncom 14103 | . . 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 14099 | 1 ⊢ (𝜑 → 𝐻 ∈ CMnd) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ w3a 1005 = wceq 1398 ∈ wcel 2205 ‘cfv 5357 (class class class)co 6058 Basecbs 13296 ↾s cress 13297 +gcplusg 13374 Mndcmnd 13713 CMndccmn 14085 |
| 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 2207 ax-14 2208 ax-ext 2216 ax-sep 4233 ax-pow 4292 ax-pr 4327 ax-un 4559 ax-setind 4664 ax-cnex 8234 ax-resscn 8235 ax-1cn 8236 ax-1re 8237 ax-icn 8238 ax-addcl 8239 ax-addrcl 8240 ax-mulcl 8241 ax-addcom 8243 ax-addass 8245 ax-i2m1 8248 ax-0lt1 8249 ax-0id 8251 ax-rnegex 8252 ax-pre-ltirr 8255 ax-pre-ltadd 8259 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ne 2415 df-nel 2510 df-ral 2527 df-rex 2528 df-rab 2531 df-v 2817 df-sbc 3046 df-dif 3216 df-un 3218 df-in 3220 df-ss 3227 df-nul 3513 df-pw 3676 df-sn 3700 df-pr 3701 df-op 3703 df-uni 3920 df-int 3955 df-br 4115 df-opab 4177 df-mpt 4178 df-id 4419 df-xp 4760 df-rel 4761 df-cnv 4762 df-co 4763 df-dm 4764 df-rn 4765 df-res 4766 df-iota 5317 df-fun 5359 df-fv 5365 df-ov 6061 df-oprab 6062 df-mpo 6063 df-pnf 8326 df-mnf 8327 df-ltxr 8329 df-inn 9255 df-2 9313 df-ndx 13299 df-slot 13300 df-base 13302 df-sets 13303 df-iress 13304 df-plusg 13387 df-cmn 14087 |
| This theorem is referenced by: unitabl 14347 subrgcrng 14456 |
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