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| Mirrors > Home > MPE Home > Th. List > prdsgrpd | Structured version Visualization version GIF version | ||
| Description: The product of a family of groups is a group. (Contributed by Stefan O'Rear, 10-Jan-2015.) |
| Ref | Expression |
|---|---|
| prdsgrpd.y | ⊢ 𝑌 = (𝑆Xs𝑅) |
| prdsgrpd.i | ⊢ (𝜑 → 𝐼 ∈ 𝑊) |
| prdsgrpd.s | ⊢ (𝜑 → 𝑆 ∈ 𝑉) |
| prdsgrpd.r | ⊢ (𝜑 → 𝑅:𝐼⟶Grp) |
| Ref | Expression |
|---|---|
| prdsgrpd | ⊢ (𝜑 → 𝑌 ∈ Grp) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqidd 2764 | . 2 ⊢ (𝜑 → (Base‘𝑌) = (Base‘𝑌)) | |
| 2 | eqidd 2764 | . 2 ⊢ (𝜑 → (+g‘𝑌) = (+g‘𝑌)) | |
| 3 | prdsgrpd.y | . . 3 ⊢ 𝑌 = (𝑆Xs𝑅) | |
| 4 | prdsgrpd.i | . . 3 ⊢ (𝜑 → 𝐼 ∈ 𝑊) | |
| 5 | prdsgrpd.s | . . 3 ⊢ (𝜑 → 𝑆 ∈ 𝑉) | |
| 6 | prdsgrpd.r | . . . 4 ⊢ (𝜑 → 𝑅:𝐼⟶Grp) | |
| 7 | grpmnd 19201 | . . . . 5 ⊢ (𝑎 ∈ Grp → 𝑎 ∈ Mnd) | |
| 8 | 7 | ssriv 3917 | . . . 4 ⊢ Grp ⊆ Mnd |
| 9 | fss 6756 | . . . 4 ⊢ ((𝑅:𝐼⟶Grp ∧ Grp ⊆ Mnd) → 𝑅:𝐼⟶Mnd) | |
| 10 | 6, 8, 9 | sylancl 598 | . . 3 ⊢ (𝜑 → 𝑅:𝐼⟶Mnd) |
| 11 | 3, 4, 5, 10 | prds0g 19015 | . 2 ⊢ (𝜑 → (0g ∘ 𝑅) = (0g‘𝑌)) |
| 12 | 3, 4, 5, 10 | prdsmndd 19014 | . 2 ⊢ (𝜑 → 𝑌 ∈ Mnd) |
| 13 | eqid 2763 | . . . 4 ⊢ (Base‘𝑌) = (Base‘𝑌) | |
| 14 | eqid 2763 | . . . 4 ⊢ (+g‘𝑌) = (+g‘𝑌) | |
| 15 | 5 | elexd 3477 | . . . . 5 ⊢ (𝜑 → 𝑆 ∈ V) |
| 16 | 15 | adantr 486 | . . . 4 ⊢ ((𝜑 ∧ 𝑎 ∈ (Base‘𝑌)) → 𝑆 ∈ V) |
| 17 | 4 | elexd 3477 | . . . . 5 ⊢ (𝜑 → 𝐼 ∈ V) |
| 18 | 17 | adantr 486 | . . . 4 ⊢ ((𝜑 ∧ 𝑎 ∈ (Base‘𝑌)) → 𝐼 ∈ V) |
| 19 | 6 | adantr 486 | . . . 4 ⊢ ((𝜑 ∧ 𝑎 ∈ (Base‘𝑌)) → 𝑅:𝐼⟶Grp) |
| 20 | simpr 490 | . . . 4 ⊢ ((𝜑 ∧ 𝑎 ∈ (Base‘𝑌)) → 𝑎 ∈ (Base‘𝑌)) | |
| 21 | eqid 2763 | . . . 4 ⊢ (0g ∘ 𝑅) = (0g ∘ 𝑅) | |
| 22 | eqid 2763 | . . . 4 ⊢ (𝑏 ∈ 𝐼 ↦ ((invg‘(𝑅‘𝑏))‘(𝑎‘𝑏))) = (𝑏 ∈ 𝐼 ↦ ((invg‘(𝑅‘𝑏))‘(𝑎‘𝑏))) | |
| 23 | 3, 13, 14, 16, 18, 19, 20, 21, 22 | prdsinvlem 19309 | . . 3 ⊢ ((𝜑 ∧ 𝑎 ∈ (Base‘𝑌)) → ((𝑏 ∈ 𝐼 ↦ ((invg‘(𝑅‘𝑏))‘(𝑎‘𝑏))) ∈ (Base‘𝑌) ∧ ((𝑏 ∈ 𝐼 ↦ ((invg‘(𝑅‘𝑏))‘(𝑎‘𝑏)))(+g‘𝑌)𝑎) = (0g ∘ 𝑅))) |
| 24 | 23 | simpld 500 | . 2 ⊢ ((𝜑 ∧ 𝑎 ∈ (Base‘𝑌)) → (𝑏 ∈ 𝐼 ↦ ((invg‘(𝑅‘𝑏))‘(𝑎‘𝑏))) ∈ (Base‘𝑌)) |
| 25 | 23 | simprd 501 | . 2 ⊢ ((𝜑 ∧ 𝑎 ∈ (Base‘𝑌)) → ((𝑏 ∈ 𝐼 ↦ ((invg‘(𝑅‘𝑏))‘(𝑎‘𝑏)))(+g‘𝑌)𝑎) = (0g ∘ 𝑅)) |
| 26 | 1, 2, 11, 12, 24, 25 | isgrpd2 19217 | 1 ⊢ (𝜑 → 𝑌 ∈ Grp) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2147 Vcvv 3454 ⊆ wss 3900 ↦ cmpt 5192 ∘ ccom 5662 ⟶wf 6562 ‘cfv 6566 (class class class)co 7451 Basecbs 17431 +gcplusg 17472 0gc0g 17660 Xscprds 17666 Mndcmnd 18973 Grpcgrp 19194 invgcminusg 19195 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-rep 5238 ax-sep 5255 ax-nul 5266 ax-pow 5334 ax-pr 5398 ax-un 7783 ax-cnex 11295 ax-resscn 11296 ax-1cn 11297 ax-icn 11298 ax-addcl 11299 ax-addrcl 11300 ax-mulcl 11301 ax-mulrcl 11302 ax-mulcom 11303 ax-addass 11304 ax-mulass 11305 ax-distr 11306 ax-i2m1 11307 ax-1ne0 11308 ax-1rid 11309 ax-rnegex 11310 ax-rrecex 11311 ax-cnre 11312 ax-pre-lttri 11313 ax-pre-lttrn 11314 ax-pre-ltadd 11315 ax-pre-mulgt0 11316 |
| 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 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-tp 4593 df-op 4841 df-uni 4873 df-iun 4958 df-br 5109 df-opab 5174 df-mpt 5193 df-tr 5219 df-id 5553 df-eprel 5558 df-po 5566 df-so 5567 df-fr 5611 df-we 5613 df-xp 5664 df-rel 5665 df-cnv 5666 df-co 5667 df-dm 5668 df-rn 5669 df-res 5670 df-ima 5671 df-pred 6330 df-ord 6391 df-on 6392 df-lim 6393 df-suc 6394 df-iota 6520 df-fun 6568 df-fn 6569 df-f 6570 df-f1 6571 df-fo 6572 df-f1o 6573 df-fv 6574 df-riota 7408 df-ov 7454 df-oprab 7455 df-mpo 7456 df-om 7912 df-1st 8035 df-2nd 8036 df-frecs 8337 df-wrecs 8368 df-recs 8417 df-rdg 8456 df-1o 8514 df-er 8755 df-map 8887 df-ixp 8964 df-en 9012 df-dom 9013 df-sdom 9014 df-fin 9015 df-sup 9471 df-pnf 11384 df-mnf 11385 df-xr 11386 df-ltxr 11387 df-le 11388 df-sub 11582 df-neg 11583 df-nn 12376 df-2 12445 df-3 12446 df-4 12447 df-5 12448 df-6 12449 df-7 12450 df-8 12451 df-9 12452 df-n0 12647 df-z 12734 df-dec 12855 df-uz 13006 df-fz 13680 df-struct 17369 df-slot 17404 df-ndx 17416 df-base 17432 df-plusg 17486 df-mulr 17487 df-sca 17489 df-vsca 17490 df-ip 17491 df-tset 17492 df-ple 17493 df-ds 17495 df-hom 17497 df-cco 17498 df-0g 17662 df-prds 17668 df-mgm 18866 df-sgrp 18958 df-mnd 18974 df-grp 19197 df-minusg 19198 |
| This theorem is used by: prdsinvgd 19311 pwsgrp 19312 xpsgrp 19319 prdsabld 20127 prdsringd 20601 prdslmodd 21295 dsmmsubg 22104 prdstgpd 24499 |
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