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Mirrors > Home > MPE Home > Th. List > lindfres | Structured version Visualization version GIF version |
Description: Any restriction of an independent family is independent. (Contributed by Stefan O'Rear, 24-Feb-2015.) |
Ref | Expression |
---|---|
lindfres | ⊢ ((𝑊 ∈ LMod ∧ 𝐹 LIndF 𝑊) → (𝐹 ↾ 𝑋) LIndF 𝑊) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | coires1 6157 | . . 3 ⊢ (𝐹 ∘ ( I ↾ dom (𝐹 ↾ 𝑋))) = (𝐹 ↾ dom (𝐹 ↾ 𝑋)) | |
2 | resdmres 6124 | . . 3 ⊢ (𝐹 ↾ dom (𝐹 ↾ 𝑋)) = (𝐹 ↾ 𝑋) | |
3 | 1, 2 | eqtri 2766 | . 2 ⊢ (𝐹 ∘ ( I ↾ dom (𝐹 ↾ 𝑋))) = (𝐹 ↾ 𝑋) |
4 | f1oi 6737 | . . . . 5 ⊢ ( I ↾ dom (𝐹 ↾ 𝑋)):dom (𝐹 ↾ 𝑋)–1-1-onto→dom (𝐹 ↾ 𝑋) | |
5 | f1of1 6699 | . . . . 5 ⊢ (( I ↾ dom (𝐹 ↾ 𝑋)):dom (𝐹 ↾ 𝑋)–1-1-onto→dom (𝐹 ↾ 𝑋) → ( I ↾ dom (𝐹 ↾ 𝑋)):dom (𝐹 ↾ 𝑋)–1-1→dom (𝐹 ↾ 𝑋)) | |
6 | 4, 5 | ax-mp 5 | . . . 4 ⊢ ( I ↾ dom (𝐹 ↾ 𝑋)):dom (𝐹 ↾ 𝑋)–1-1→dom (𝐹 ↾ 𝑋) |
7 | resss 5905 | . . . . 5 ⊢ (𝐹 ↾ 𝑋) ⊆ 𝐹 | |
8 | dmss 5800 | . . . . 5 ⊢ ((𝐹 ↾ 𝑋) ⊆ 𝐹 → dom (𝐹 ↾ 𝑋) ⊆ dom 𝐹) | |
9 | 7, 8 | ax-mp 5 | . . . 4 ⊢ dom (𝐹 ↾ 𝑋) ⊆ dom 𝐹 |
10 | f1ss 6660 | . . . 4 ⊢ ((( I ↾ dom (𝐹 ↾ 𝑋)):dom (𝐹 ↾ 𝑋)–1-1→dom (𝐹 ↾ 𝑋) ∧ dom (𝐹 ↾ 𝑋) ⊆ dom 𝐹) → ( I ↾ dom (𝐹 ↾ 𝑋)):dom (𝐹 ↾ 𝑋)–1-1→dom 𝐹) | |
11 | 6, 9, 10 | mp2an 688 | . . 3 ⊢ ( I ↾ dom (𝐹 ↾ 𝑋)):dom (𝐹 ↾ 𝑋)–1-1→dom 𝐹 |
12 | f1lindf 20939 | . . 3 ⊢ ((𝑊 ∈ LMod ∧ 𝐹 LIndF 𝑊 ∧ ( I ↾ dom (𝐹 ↾ 𝑋)):dom (𝐹 ↾ 𝑋)–1-1→dom 𝐹) → (𝐹 ∘ ( I ↾ dom (𝐹 ↾ 𝑋))) LIndF 𝑊) | |
13 | 11, 12 | mp3an3 1448 | . 2 ⊢ ((𝑊 ∈ LMod ∧ 𝐹 LIndF 𝑊) → (𝐹 ∘ ( I ↾ dom (𝐹 ↾ 𝑋))) LIndF 𝑊) |
14 | 3, 13 | eqbrtrrid 5106 | 1 ⊢ ((𝑊 ∈ LMod ∧ 𝐹 LIndF 𝑊) → (𝐹 ↾ 𝑋) LIndF 𝑊) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 395 ∈ wcel 2108 ⊆ wss 3883 class class class wbr 5070 I cid 5479 dom cdm 5580 ↾ cres 5582 ∘ ccom 5584 –1-1→wf1 6415 –1-1-onto→wf1o 6417 LModclmod 20038 LIndF clindf 20921 |
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 ax-cnex 10858 ax-1cn 10860 ax-addcl 10862 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 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-ral 3068 df-rex 3069 df-reu 3070 df-rmo 3071 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-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-int 4877 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-we 5537 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-pred 6191 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 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-riota 7212 df-ov 7258 df-om 7688 df-2nd 7805 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-nn 11904 df-slot 16811 df-ndx 16823 df-base 16841 df-0g 17069 df-mgm 18241 df-sgrp 18290 df-mnd 18301 df-grp 18495 df-lmod 20040 df-lss 20109 df-lsp 20149 df-lindf 20923 |
This theorem is referenced by: lindsss 20941 |
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