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Mirrors > Home > MPE Home > Th. List > dprdff | Structured version Visualization version GIF version |
Description: A finitely supported function in 𝑆 is a function into the base. (Contributed by Mario Carneiro, 25-Apr-2016.) (Revised by AV, 11-Jul-2019.) |
Ref | Expression |
---|---|
dprdff.w | ⊢ 𝑊 = {ℎ ∈ X𝑖 ∈ 𝐼 (𝑆‘𝑖) ∣ ℎ finSupp 0 } |
dprdff.1 | ⊢ (𝜑 → 𝐺dom DProd 𝑆) |
dprdff.2 | ⊢ (𝜑 → dom 𝑆 = 𝐼) |
dprdff.3 | ⊢ (𝜑 → 𝐹 ∈ 𝑊) |
dprdff.b | ⊢ 𝐵 = (Base‘𝐺) |
Ref | Expression |
---|---|
dprdff | ⊢ (𝜑 → 𝐹:𝐼⟶𝐵) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dprdff.3 | . . . 4 ⊢ (𝜑 → 𝐹 ∈ 𝑊) | |
2 | dprdff.w | . . . . 5 ⊢ 𝑊 = {ℎ ∈ X𝑖 ∈ 𝐼 (𝑆‘𝑖) ∣ ℎ finSupp 0 } | |
3 | dprdff.1 | . . . . 5 ⊢ (𝜑 → 𝐺dom DProd 𝑆) | |
4 | dprdff.2 | . . . . 5 ⊢ (𝜑 → dom 𝑆 = 𝐼) | |
5 | 2, 3, 4 | dprdw 19528 | . . . 4 ⊢ (𝜑 → (𝐹 ∈ 𝑊 ↔ (𝐹 Fn 𝐼 ∧ ∀𝑥 ∈ 𝐼 (𝐹‘𝑥) ∈ (𝑆‘𝑥) ∧ 𝐹 finSupp 0 ))) |
6 | 1, 5 | mpbid 231 | . . 3 ⊢ (𝜑 → (𝐹 Fn 𝐼 ∧ ∀𝑥 ∈ 𝐼 (𝐹‘𝑥) ∈ (𝑆‘𝑥) ∧ 𝐹 finSupp 0 )) |
7 | 6 | simp1d 1140 | . 2 ⊢ (𝜑 → 𝐹 Fn 𝐼) |
8 | 6 | simp2d 1141 | . . 3 ⊢ (𝜑 → ∀𝑥 ∈ 𝐼 (𝐹‘𝑥) ∈ (𝑆‘𝑥)) |
9 | 3, 4 | dprdf2 19525 | . . . . . . 7 ⊢ (𝜑 → 𝑆:𝐼⟶(SubGrp‘𝐺)) |
10 | 9 | ffvelrnda 6943 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐼) → (𝑆‘𝑥) ∈ (SubGrp‘𝐺)) |
11 | dprdff.b | . . . . . . 7 ⊢ 𝐵 = (Base‘𝐺) | |
12 | 11 | subgss 18671 | . . . . . 6 ⊢ ((𝑆‘𝑥) ∈ (SubGrp‘𝐺) → (𝑆‘𝑥) ⊆ 𝐵) |
13 | 10, 12 | syl 17 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐼) → (𝑆‘𝑥) ⊆ 𝐵) |
14 | 13 | sseld 3916 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐼) → ((𝐹‘𝑥) ∈ (𝑆‘𝑥) → (𝐹‘𝑥) ∈ 𝐵)) |
15 | 14 | ralimdva 3102 | . . 3 ⊢ (𝜑 → (∀𝑥 ∈ 𝐼 (𝐹‘𝑥) ∈ (𝑆‘𝑥) → ∀𝑥 ∈ 𝐼 (𝐹‘𝑥) ∈ 𝐵)) |
16 | 8, 15 | mpd 15 | . 2 ⊢ (𝜑 → ∀𝑥 ∈ 𝐼 (𝐹‘𝑥) ∈ 𝐵) |
17 | ffnfv 6974 | . 2 ⊢ (𝐹:𝐼⟶𝐵 ↔ (𝐹 Fn 𝐼 ∧ ∀𝑥 ∈ 𝐼 (𝐹‘𝑥) ∈ 𝐵)) | |
18 | 7, 16, 17 | sylanbrc 582 | 1 ⊢ (𝜑 → 𝐹:𝐼⟶𝐵) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 395 ∧ w3a 1085 = wceq 1539 ∈ wcel 2108 ∀wral 3063 {crab 3067 ⊆ wss 3883 class class class wbr 5070 dom cdm 5580 Fn wfn 6413 ⟶wf 6414 ‘cfv 6418 Xcixp 8643 finSupp cfsupp 9058 Basecbs 16840 SubGrpcsubg 18664 DProd cdprd 19511 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-rep 5205 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-reu 3070 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4837 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-id 5480 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-ov 7258 df-oprab 7259 df-mpo 7260 df-1st 7804 df-2nd 7805 df-ixp 8644 df-subg 18667 df-dprd 19513 |
This theorem is referenced by: dprdfcntz 19533 dprdssv 19534 dprdfid 19535 dprdfinv 19537 dprdfadd 19538 dprdfsub 19539 dprdfeq0 19540 dprdf11 19541 dprdlub 19544 dmdprdsplitlem 19555 dprddisj2 19557 dpjidcl 19576 |
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