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Mirrors > Home > MPE Home > Th. List > lindsss | Structured version Visualization version GIF version |
Description: Any subset of an independent set is independent. (Contributed by Stefan O'Rear, 24-Feb-2015.) |
Ref | Expression |
---|---|
lindsss | ⊢ ((𝑊 ∈ LMod ∧ 𝐹 ∈ (LIndS‘𝑊) ∧ 𝐺 ⊆ 𝐹) → 𝐺 ∈ (LIndS‘𝑊)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqid 2736 | . . . . . 6 ⊢ (Base‘𝑊) = (Base‘𝑊) | |
2 | 1 | linds1 20726 | . . . . 5 ⊢ (𝐹 ∈ (LIndS‘𝑊) → 𝐹 ⊆ (Base‘𝑊)) |
3 | 2 | adantl 485 | . . . 4 ⊢ ((𝑊 ∈ LMod ∧ 𝐹 ∈ (LIndS‘𝑊)) → 𝐹 ⊆ (Base‘𝑊)) |
4 | sstr2 3894 | . . . 4 ⊢ (𝐺 ⊆ 𝐹 → (𝐹 ⊆ (Base‘𝑊) → 𝐺 ⊆ (Base‘𝑊))) | |
5 | 3, 4 | syl5com 31 | . . 3 ⊢ ((𝑊 ∈ LMod ∧ 𝐹 ∈ (LIndS‘𝑊)) → (𝐺 ⊆ 𝐹 → 𝐺 ⊆ (Base‘𝑊))) |
6 | 5 | 3impia 1119 | . 2 ⊢ ((𝑊 ∈ LMod ∧ 𝐹 ∈ (LIndS‘𝑊) ∧ 𝐺 ⊆ 𝐹) → 𝐺 ⊆ (Base‘𝑊)) |
7 | simp1 1138 | . . . 4 ⊢ ((𝑊 ∈ LMod ∧ 𝐹 ∈ (LIndS‘𝑊) ∧ 𝐺 ⊆ 𝐹) → 𝑊 ∈ LMod) | |
8 | linds2 20727 | . . . . 5 ⊢ (𝐹 ∈ (LIndS‘𝑊) → ( I ↾ 𝐹) LIndF 𝑊) | |
9 | 8 | 3ad2ant2 1136 | . . . 4 ⊢ ((𝑊 ∈ LMod ∧ 𝐹 ∈ (LIndS‘𝑊) ∧ 𝐺 ⊆ 𝐹) → ( I ↾ 𝐹) LIndF 𝑊) |
10 | lindfres 20739 | . . . 4 ⊢ ((𝑊 ∈ LMod ∧ ( I ↾ 𝐹) LIndF 𝑊) → (( I ↾ 𝐹) ↾ 𝐺) LIndF 𝑊) | |
11 | 7, 9, 10 | syl2anc 587 | . . 3 ⊢ ((𝑊 ∈ LMod ∧ 𝐹 ∈ (LIndS‘𝑊) ∧ 𝐺 ⊆ 𝐹) → (( I ↾ 𝐹) ↾ 𝐺) LIndF 𝑊) |
12 | resabs1 5866 | . . . . 5 ⊢ (𝐺 ⊆ 𝐹 → (( I ↾ 𝐹) ↾ 𝐺) = ( I ↾ 𝐺)) | |
13 | 12 | breq1d 5049 | . . . 4 ⊢ (𝐺 ⊆ 𝐹 → ((( I ↾ 𝐹) ↾ 𝐺) LIndF 𝑊 ↔ ( I ↾ 𝐺) LIndF 𝑊)) |
14 | 13 | 3ad2ant3 1137 | . . 3 ⊢ ((𝑊 ∈ LMod ∧ 𝐹 ∈ (LIndS‘𝑊) ∧ 𝐺 ⊆ 𝐹) → ((( I ↾ 𝐹) ↾ 𝐺) LIndF 𝑊 ↔ ( I ↾ 𝐺) LIndF 𝑊)) |
15 | 11, 14 | mpbid 235 | . 2 ⊢ ((𝑊 ∈ LMod ∧ 𝐹 ∈ (LIndS‘𝑊) ∧ 𝐺 ⊆ 𝐹) → ( I ↾ 𝐺) LIndF 𝑊) |
16 | 1 | islinds 20725 | . . 3 ⊢ (𝑊 ∈ LMod → (𝐺 ∈ (LIndS‘𝑊) ↔ (𝐺 ⊆ (Base‘𝑊) ∧ ( I ↾ 𝐺) LIndF 𝑊))) |
17 | 16 | 3ad2ant1 1135 | . 2 ⊢ ((𝑊 ∈ LMod ∧ 𝐹 ∈ (LIndS‘𝑊) ∧ 𝐺 ⊆ 𝐹) → (𝐺 ∈ (LIndS‘𝑊) ↔ (𝐺 ⊆ (Base‘𝑊) ∧ ( I ↾ 𝐺) LIndF 𝑊))) |
18 | 6, 15, 17 | mpbir2and 713 | 1 ⊢ ((𝑊 ∈ LMod ∧ 𝐹 ∈ (LIndS‘𝑊) ∧ 𝐺 ⊆ 𝐹) → 𝐺 ∈ (LIndS‘𝑊)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 209 ∧ wa 399 ∧ w3a 1089 ∈ wcel 2112 ⊆ wss 3853 class class class wbr 5039 I cid 5439 ↾ cres 5538 ‘cfv 6358 Basecbs 16666 LModclmod 19853 LIndF clindf 20720 LIndSclinds 20721 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2018 ax-8 2114 ax-9 2122 ax-10 2143 ax-11 2160 ax-12 2177 ax-ext 2708 ax-rep 5164 ax-sep 5177 ax-nul 5184 ax-pow 5243 ax-pr 5307 ax-un 7501 ax-cnex 10750 ax-1cn 10752 ax-addcl 10754 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-3or 1090 df-3an 1091 df-tru 1546 df-fal 1556 df-ex 1788 df-nf 1792 df-sb 2073 df-mo 2539 df-eu 2568 df-clab 2715 df-cleq 2728 df-clel 2809 df-nfc 2879 df-ne 2933 df-ral 3056 df-rex 3057 df-reu 3058 df-rmo 3059 df-rab 3060 df-v 3400 df-sbc 3684 df-csb 3799 df-dif 3856 df-un 3858 df-in 3860 df-ss 3870 df-pss 3872 df-nul 4224 df-if 4426 df-pw 4501 df-sn 4528 df-pr 4530 df-tp 4532 df-op 4534 df-uni 4806 df-int 4846 df-iun 4892 df-br 5040 df-opab 5102 df-mpt 5121 df-tr 5147 df-id 5440 df-eprel 5445 df-po 5453 df-so 5454 df-fr 5494 df-we 5496 df-xp 5542 df-rel 5543 df-cnv 5544 df-co 5545 df-dm 5546 df-rn 5547 df-res 5548 df-ima 5549 df-pred 6140 df-ord 6194 df-on 6195 df-lim 6196 df-suc 6197 df-iota 6316 df-fun 6360 df-fn 6361 df-f 6362 df-f1 6363 df-fo 6364 df-f1o 6365 df-fv 6366 df-riota 7148 df-ov 7194 df-om 7623 df-wrecs 8025 df-recs 8086 df-rdg 8124 df-nn 11796 df-ndx 16669 df-slot 16670 df-base 16672 df-0g 16900 df-mgm 18068 df-sgrp 18117 df-mnd 18128 df-grp 18322 df-lmod 19855 df-lss 19923 df-lsp 19963 df-lindf 20722 df-linds 20723 |
This theorem is referenced by: islinds4 20751 linds2eq 31243 dimkerim 31376 |
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