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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–1-1→𝑆) → 𝐹 LIndF 𝑊) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | f1f 6727 | . . . 4 ⊢ (𝐹:𝐷–1-1→𝑆 → 𝐹:𝐷⟶𝑆) | |
| 2 | fcoi2 6706 | . . . 4 ⊢ (𝐹:𝐷⟶𝑆 → (( I ↾ 𝑆) ∘ 𝐹) = 𝐹) | |
| 3 | 1, 2 | syl 17 | . . 3 ⊢ (𝐹:𝐷–1-1→𝑆 → (( I ↾ 𝑆) ∘ 𝐹) = 𝐹) |
| 4 | 3 | 3ad2ant3 1142 | . 2 ⊢ ((𝑊 ∈ LMod ∧ 𝑆 ∈ (LIndS‘𝑊) ∧ 𝐹:𝐷–1-1→𝑆) → (( I ↾ 𝑆) ∘ 𝐹) = 𝐹) |
| 5 | simp1 1143 | . . 3 ⊢ ((𝑊 ∈ LMod ∧ 𝑆 ∈ (LIndS‘𝑊) ∧ 𝐹:𝐷–1-1→𝑆) → 𝑊 ∈ LMod) | |
| 6 | linds2 21790 | . . . 4 ⊢ (𝑆 ∈ (LIndS‘𝑊) → ( I ↾ 𝑆) LIndF 𝑊) | |
| 7 | 6 | 3ad2ant2 1141 | . . 3 ⊢ ((𝑊 ∈ LMod ∧ 𝑆 ∈ (LIndS‘𝑊) ∧ 𝐹:𝐷–1-1→𝑆) → ( I ↾ 𝑆) LIndF 𝑊) |
| 8 | dmresi 6011 | . . . . . 6 ⊢ dom ( I ↾ 𝑆) = 𝑆 | |
| 9 | f1eq3 6724 | . . . . . 6 ⊢ (dom ( I ↾ 𝑆) = 𝑆 → (𝐹:𝐷–1-1→dom ( I ↾ 𝑆) ↔ 𝐹:𝐷–1-1→𝑆)) | |
| 10 | 8, 9 | ax-mp 5 | . . . . 5 ⊢ (𝐹:𝐷–1-1→dom ( I ↾ 𝑆) ↔ 𝐹:𝐷–1-1→𝑆) |
| 11 | 10 | biimpri 230 | . . . 4 ⊢ (𝐹:𝐷–1-1→𝑆 → 𝐹:𝐷–1-1→dom ( I ↾ 𝑆)) |
| 12 | 11 | 3ad2ant3 1142 | . . 3 ⊢ ((𝑊 ∈ LMod ∧ 𝑆 ∈ (LIndS‘𝑊) ∧ 𝐹:𝐷–1-1→𝑆) → 𝐹:𝐷–1-1→dom ( I ↾ 𝑆)) |
| 13 | f1lindf 21801 | . . 3 ⊢ ((𝑊 ∈ LMod ∧ ( I ↾ 𝑆) LIndF 𝑊 ∧ 𝐹:𝐷–1-1→dom ( I ↾ 𝑆)) → (( I ↾ 𝑆) ∘ 𝐹) LIndF 𝑊) | |
| 14 | 5, 7, 12, 13 | syl3anc 1380 | . 2 ⊢ ((𝑊 ∈ LMod ∧ 𝑆 ∈ (LIndS‘𝑊) ∧ 𝐹:𝐷–1-1→𝑆) → (( I ↾ 𝑆) ∘ 𝐹) LIndF 𝑊) |
| 15 | 4, 14 | eqbrtrrd 5099 | 1 ⊢ ((𝑊 ∈ LMod ∧ 𝑆 ∈ (LIndS‘𝑊) ∧ 𝐹:𝐷–1-1→𝑆) → 𝐹 LIndF 𝑊) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 208 ∧ w3a 1093 = wceq 1548 ∈ wcel 2121 class class class wbr 5075 I cid 5515 dom cdm 5621 ↾ cres 5623 ∘ ccom 5625 ⟶wf 6485 –1-1→wf1 6486 ‘cfv 6489 LModclmod 20854 LIndF clindf 21783 LIndSclinds 21784 |
| 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 1975 ax-7 2016 ax-8 2123 ax-9 2131 ax-10 2154 ax-11 2170 ax-12 2191 ax-ext 2713 ax-rep 5202 ax-sep 5221 ax-nul 5231 ax-pow 5297 ax-pr 5365 ax-un 7682 ax-cnex 11089 ax-1cn 11091 ax-addcl 11093 |
| This theorem depends on definitions: df-bi 209 df-an 398 df-or 855 df-3or 1094 df-3an 1095 df-tru 1551 df-fal 1561 df-ex 1788 df-nf 1792 df-sb 2075 df-mo 2545 df-eu 2575 df-clab 2720 df-cleq 2733 df-clel 2816 df-nfc 2890 df-ne 2937 df-ral 3056 df-rex 3066 df-rmo 3346 df-reu 3347 df-rab 3394 df-v 3435 df-sbc 3726 df-csb 3834 df-dif 3888 df-un 3890 df-in 3892 df-ss 3902 df-pss 3905 df-nul 4265 df-if 4458 df-pw 4534 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4842 df-int 4881 df-iun 4926 df-br 5076 df-opab 5138 df-mpt 5157 df-tr 5183 df-id 5516 df-eprel 5521 df-po 5529 df-so 5530 df-fr 5574 df-we 5576 df-xp 5627 df-rel 5628 df-cnv 5629 df-co 5630 df-dm 5631 df-rn 5632 df-res 5633 df-ima 5634 df-pred 6256 df-ord 6317 df-on 6318 df-lim 6319 df-suc 6320 df-iota 6445 df-fun 6491 df-fn 6492 df-f 6493 df-f1 6494 df-fo 6495 df-f1o 6496 df-fv 6497 df-riota 7317 df-ov 7363 df-om 7811 df-2nd 7936 df-frecs 8225 df-wrecs 8256 df-recs 8305 df-rdg 8343 df-nn 12170 df-slot 17147 df-ndx 17159 df-base 17175 df-0g 17399 df-mgm 18603 df-sgrp 18682 df-mnd 18698 df-grp 18907 df-lmod 20856 df-lss 20926 df-lsp 20966 df-lindf 21785 df-linds 21786 |
| This theorem is referenced by: islindf3 21805 lindsmm 21807 lbslcic 21820 |
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