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| Mirrors > Home > MPE Home > Th. List > f1linds | Structured version Visualization version GIF version | ||
| Description: A family constructed from non-repeated elements of an independent set is independent. (Contributed by Stefan O'Rear, 26-Feb-2015.) |
| Ref | Expression |
|---|---|
| f1linds | ⊢ ((𝑊 ∈ LMod ∧ 𝑆 ∈ (LIndS‘𝑊) ∧ 𝐹:𝐷⟶1-1𝑆) → 𝐹 LIndF 𝑊) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | f1f 6808 | . . . 4 ⊢ (𝐹:𝐷⟶1-1𝑆 → 𝐹:𝐷⟶𝑆) | |
| 2 | fcoi2 6787 | . . . 4 ⊢ (𝐹:𝐷⟶𝑆 → (( I ↾ 𝑆) ∘ 𝐹) = 𝐹) | |
| 3 | 1, 2 | syl 18 | . . 3 ⊢ (𝐹:𝐷⟶1-1𝑆 → (( I ↾ 𝑆) ∘ 𝐹) = 𝐹) |
| 4 | 3 | 3ad2ant3 1153 | . 2 ⊢ ((𝑊 ∈ LMod ∧ 𝑆 ∈ (LIndS‘𝑊) ∧ 𝐹:𝐷⟶1-1𝑆) → (( I ↾ 𝑆) ∘ 𝐹) = 𝐹) |
| 5 | simp1 1154 | . . 3 ⊢ ((𝑊 ∈ LMod ∧ 𝑆 ∈ (LIndS‘𝑊) ∧ 𝐹:𝐷⟶1-1𝑆) → 𝑊 ∈ LMod) | |
| 6 | linds2 22172 | . . . 4 ⊢ (𝑆 ∈ (LIndS‘𝑊) → ( I ↾ 𝑆) LIndF 𝑊) | |
| 7 | 6 | 3ad2ant2 1152 | . . 3 ⊢ ((𝑊 ∈ LMod ∧ 𝑆 ∈ (LIndS‘𝑊) ∧ 𝐹:𝐷⟶1-1𝑆) → ( I ↾ 𝑆) LIndF 𝑊) |
| 8 | dmresi 6062 | . . . . . 6 ⊢ dom ( I ↾ 𝑆) = 𝑆 | |
| 9 | f1eq3 6805 | . . . . . 6 ⊢ (dom ( I ↾ 𝑆) = 𝑆 → (𝐹:𝐷⟶1-1dom ( I ↾ 𝑆) ↔ 𝐹:𝐷⟶1-1𝑆)) | |
| 10 | 8, 9 | ax-mp 5 | . . . . 5 ⊢ (𝐹:𝐷⟶1-1dom ( I ↾ 𝑆) ↔ 𝐹:𝐷⟶1-1𝑆) |
| 11 | 10 | biimpri 231 | . . . 4 ⊢ (𝐹:𝐷⟶1-1𝑆 → 𝐹:𝐷⟶1-1dom ( I ↾ 𝑆)) |
| 12 | 11 | 3ad2ant3 1153 | . . 3 ⊢ ((𝑊 ∈ LMod ∧ 𝑆 ∈ (LIndS‘𝑊) ∧ 𝐹:𝐷⟶1-1𝑆) → 𝐹:𝐷⟶1-1dom ( I ↾ 𝑆)) |
| 13 | f1lindf 22183 | . . 3 ⊢ ((𝑊 ∈ LMod ∧ ( I ↾ 𝑆) LIndF 𝑊 ∧ 𝐹:𝐷⟶1-1dom ( I ↾ 𝑆)) → (( I ↾ 𝑆) ∘ 𝐹) LIndF 𝑊) | |
| 14 | 5, 7, 12, 13 | syl3anc 1399 | . 2 ⊢ ((𝑊 ∈ LMod ∧ 𝑆 ∈ (LIndS‘𝑊) ∧ 𝐹:𝐷⟶1-1𝑆) → (( I ↾ 𝑆) ∘ 𝐹) LIndF 𝑊) |
| 15 | 4, 14 | eqbrtrrd 5135 | 1 ⊢ ((𝑊 ∈ LMod ∧ 𝑆 ∈ (LIndS‘𝑊) ∧ 𝐹:𝐷⟶1-1𝑆) → 𝐹 LIndF 𝑊) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ w3a 1103 = wceq 1570 ∈ wcel 2147 class class class wbr 5108 I cid 5552 dom cdm 5658 ↾ cres 5660 ∘ ccom 5662 ⟶wf 6562 ⟶1-1wf1 6563 ‘cfv 6566 LModclmod 21186 LIndF clindf 22165 LIndSclinds 22166 |
| 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-1cn 11297 ax-addcl 11299 |
| 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-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-op 4841 df-uni 4873 df-int 4913 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-om 7912 df-2nd 8036 df-frecs 8337 df-wrecs 8368 df-recs 8417 df-rdg 8456 df-nn 12376 df-slot 17404 df-ndx 17416 df-base 17432 df-0g 17662 df-mgm 18866 df-sgrp 18958 df-mnd 18974 df-grp 19197 df-lmod 21188 df-lss 21258 df-lsp 21298 df-lindf 22167 df-linds 22168 |
| This theorem is used by: islindf3 22187 lindsmm 22189 lbslcic 22202 |
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