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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 2766 | . 2 ⊢ (𝜑 → (Base‘𝑌) = (Base‘𝑌)) | |
| 2 | eqidd 2766 | . 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 19051 | . . . . 5 ⊢ (𝑎 ∈ Grp → 𝑎 ∈ Mnd) | |
| 8 | 7 | ssriv 3942 | . . . 4 ⊢ Grp ⊆ Mnd |
| 9 | fss 6726 | . . . 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 18866 | . 2 ⊢ (𝜑 → (0g ∘ 𝑅) = (0g‘𝑌)) |
| 12 | 3, 4, 5, 10 | prdsmndd 18865 | . 2 ⊢ (𝜑 → 𝑌 ∈ Mnd) |
| 13 | eqid 2765 | . . . 4 ⊢ (Base‘𝑌) = (Base‘𝑌) | |
| 14 | eqid 2765 | . . . 4 ⊢ (+g‘𝑌) = (+g‘𝑌) | |
| 15 | 5 | elexd 3480 | . . . . 5 ⊢ (𝜑 → 𝑆 ∈ V) |
| 16 | 15 | adantr 486 | . . . 4 ⊢ ((𝜑 ∧ 𝑎 ∈ (Base‘𝑌)) → 𝑆 ∈ V) |
| 17 | 4 | elexd 3480 | . . . . 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 2765 | . . . 4 ⊢ (0g ∘ 𝑅) = (0g ∘ 𝑅) | |
| 22 | eqid 2765 | . . . 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 19159 | . . 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 19067 | 1 ⊢ (𝜑 → 𝑌 ∈ Grp) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2146 Vcvv 3457 ⊆ wss 3906 ↦ cmpt 5194 ∘ ccom 5667 ⟶wf 6536 ‘cfv 6540 (class class class)co 7419 Basecbs 17291 +gcplusg 17332 0gc0g 17514 Xscprds 17520 Mndcmnd 18824 Grpcgrp 19044 invgcminusg 19045 |
| 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-rep 5240 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-rmo 3371 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-tp 4596 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-1st 7992 df-2nd 7993 df-frecs 8284 df-wrecs 8315 df-recs 8364 df-rdg 8403 df-1o 8459 df-er 8700 df-map 8832 df-ixp 8902 df-en 8950 df-dom 8951 df-sdom 8952 df-fin 8953 df-sup 9409 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-3 12319 df-4 12320 df-5 12321 df-6 12322 df-7 12323 df-8 12324 df-9 12325 df-n0 12520 df-z 12607 df-dec 12728 df-uz 12879 df-fz 13552 df-struct 17229 df-slot 17264 df-ndx 17276 df-base 17292 df-plusg 17345 df-mulr 17346 df-sca 17348 df-vsca 17349 df-ip 17350 df-tset 17351 df-ple 17352 df-ds 17354 df-hom 17356 df-cco 17357 df-0g 17516 df-prds 17522 df-mgm 18720 df-sgrp 18809 df-mnd 18825 df-grp 19047 df-minusg 19048 |
| This theorem is used by: prdsinvgd 19161 pwsgrp 19162 xpsgrp 19169 prdsabld 19976 prdsringd 20448 prdslmodd 21140 dsmmsubg 21943 prdstgpd 24333 |
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