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Mirrors > Home > MPE Home > Th. List > lmisfree | Structured version Visualization version GIF version |
Description: A module has a basis iff it is isomorphic to a free module. In settings where isomorphic objects are not distinguished, it is common to define "free module" as any module with a basis; thus for instance lbsex 20427 might be described as "every vector space is free". (Contributed by Stefan O'Rear, 26-Feb-2015.) |
Ref | Expression |
---|---|
lmisfree.j | ⊢ 𝐽 = (LBasis‘𝑊) |
lmisfree.f | ⊢ 𝐹 = (Scalar‘𝑊) |
Ref | Expression |
---|---|
lmisfree | ⊢ (𝑊 ∈ LMod → (𝐽 ≠ ∅ ↔ ∃𝑘 𝑊 ≃𝑚 (𝐹 freeLMod 𝑘))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | n0 4280 | . . 3 ⊢ (𝐽 ≠ ∅ ↔ ∃𝑗 𝑗 ∈ 𝐽) | |
2 | vex 3436 | . . . . . . . 8 ⊢ 𝑗 ∈ V | |
3 | 2 | enref 8773 | . . . . . . 7 ⊢ 𝑗 ≈ 𝑗 |
4 | lmisfree.f | . . . . . . . 8 ⊢ 𝐹 = (Scalar‘𝑊) | |
5 | lmisfree.j | . . . . . . . 8 ⊢ 𝐽 = (LBasis‘𝑊) | |
6 | 4, 5 | lbslcic 21048 | . . . . . . 7 ⊢ ((𝑊 ∈ LMod ∧ 𝑗 ∈ 𝐽 ∧ 𝑗 ≈ 𝑗) → 𝑊 ≃𝑚 (𝐹 freeLMod 𝑗)) |
7 | 3, 6 | mp3an3 1449 | . . . . . 6 ⊢ ((𝑊 ∈ LMod ∧ 𝑗 ∈ 𝐽) → 𝑊 ≃𝑚 (𝐹 freeLMod 𝑗)) |
8 | oveq2 7283 | . . . . . . . 8 ⊢ (𝑘 = 𝑗 → (𝐹 freeLMod 𝑘) = (𝐹 freeLMod 𝑗)) | |
9 | 8 | breq2d 5086 | . . . . . . 7 ⊢ (𝑘 = 𝑗 → (𝑊 ≃𝑚 (𝐹 freeLMod 𝑘) ↔ 𝑊 ≃𝑚 (𝐹 freeLMod 𝑗))) |
10 | 2, 9 | spcev 3545 | . . . . . 6 ⊢ (𝑊 ≃𝑚 (𝐹 freeLMod 𝑗) → ∃𝑘 𝑊 ≃𝑚 (𝐹 freeLMod 𝑘)) |
11 | 7, 10 | syl 17 | . . . . 5 ⊢ ((𝑊 ∈ LMod ∧ 𝑗 ∈ 𝐽) → ∃𝑘 𝑊 ≃𝑚 (𝐹 freeLMod 𝑘)) |
12 | 11 | ex 413 | . . . 4 ⊢ (𝑊 ∈ LMod → (𝑗 ∈ 𝐽 → ∃𝑘 𝑊 ≃𝑚 (𝐹 freeLMod 𝑘))) |
13 | 12 | exlimdv 1936 | . . 3 ⊢ (𝑊 ∈ LMod → (∃𝑗 𝑗 ∈ 𝐽 → ∃𝑘 𝑊 ≃𝑚 (𝐹 freeLMod 𝑘))) |
14 | 1, 13 | syl5bi 241 | . 2 ⊢ (𝑊 ∈ LMod → (𝐽 ≠ ∅ → ∃𝑘 𝑊 ≃𝑚 (𝐹 freeLMod 𝑘))) |
15 | lmicsym 20334 | . . . 4 ⊢ (𝑊 ≃𝑚 (𝐹 freeLMod 𝑘) → (𝐹 freeLMod 𝑘) ≃𝑚 𝑊) | |
16 | lmiclcl 20332 | . . . . 5 ⊢ (𝑊 ≃𝑚 (𝐹 freeLMod 𝑘) → 𝑊 ∈ LMod) | |
17 | 4 | lmodring 20131 | . . . . . . 7 ⊢ (𝑊 ∈ LMod → 𝐹 ∈ Ring) |
18 | vex 3436 | . . . . . . 7 ⊢ 𝑘 ∈ V | |
19 | eqid 2738 | . . . . . . . 8 ⊢ (𝐹 freeLMod 𝑘) = (𝐹 freeLMod 𝑘) | |
20 | eqid 2738 | . . . . . . . 8 ⊢ (𝐹 unitVec 𝑘) = (𝐹 unitVec 𝑘) | |
21 | eqid 2738 | . . . . . . . 8 ⊢ (LBasis‘(𝐹 freeLMod 𝑘)) = (LBasis‘(𝐹 freeLMod 𝑘)) | |
22 | 19, 20, 21 | frlmlbs 21004 | . . . . . . 7 ⊢ ((𝐹 ∈ Ring ∧ 𝑘 ∈ V) → ran (𝐹 unitVec 𝑘) ∈ (LBasis‘(𝐹 freeLMod 𝑘))) |
23 | 17, 18, 22 | sylancl 586 | . . . . . 6 ⊢ (𝑊 ∈ LMod → ran (𝐹 unitVec 𝑘) ∈ (LBasis‘(𝐹 freeLMod 𝑘))) |
24 | 23 | ne0d 4269 | . . . . 5 ⊢ (𝑊 ∈ LMod → (LBasis‘(𝐹 freeLMod 𝑘)) ≠ ∅) |
25 | 16, 24 | syl 17 | . . . 4 ⊢ (𝑊 ≃𝑚 (𝐹 freeLMod 𝑘) → (LBasis‘(𝐹 freeLMod 𝑘)) ≠ ∅) |
26 | 21, 5 | lmiclbs 21044 | . . . 4 ⊢ ((𝐹 freeLMod 𝑘) ≃𝑚 𝑊 → ((LBasis‘(𝐹 freeLMod 𝑘)) ≠ ∅ → 𝐽 ≠ ∅)) |
27 | 15, 25, 26 | sylc 65 | . . 3 ⊢ (𝑊 ≃𝑚 (𝐹 freeLMod 𝑘) → 𝐽 ≠ ∅) |
28 | 27 | exlimiv 1933 | . 2 ⊢ (∃𝑘 𝑊 ≃𝑚 (𝐹 freeLMod 𝑘) → 𝐽 ≠ ∅) |
29 | 14, 28 | impbid1 224 | 1 ⊢ (𝑊 ∈ LMod → (𝐽 ≠ ∅ ↔ ∃𝑘 𝑊 ≃𝑚 (𝐹 freeLMod 𝑘))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 396 = wceq 1539 ∃wex 1782 ∈ wcel 2106 ≠ wne 2943 Vcvv 3432 ∅c0 4256 class class class wbr 5074 ran crn 5590 ‘cfv 6433 (class class class)co 7275 ≈ cen 8730 Scalarcsca 16965 Ringcrg 19783 LModclmod 20123 ≃𝑚 clmic 20283 LBasisclbs 20336 freeLMod cfrlm 20953 unitVec cuvc 20989 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-rep 5209 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 ax-cnex 10927 ax-resscn 10928 ax-1cn 10929 ax-icn 10930 ax-addcl 10931 ax-addrcl 10932 ax-mulcl 10933 ax-mulrcl 10934 ax-mulcom 10935 ax-addass 10936 ax-mulass 10937 ax-distr 10938 ax-i2m1 10939 ax-1ne0 10940 ax-1rid 10941 ax-rnegex 10942 ax-rrecex 10943 ax-cnre 10944 ax-pre-lttri 10945 ax-pre-lttrn 10946 ax-pre-ltadd 10947 ax-pre-mulgt0 10948 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-nel 3050 df-ral 3069 df-rex 3070 df-rmo 3071 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-pss 3906 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-tp 4566 df-op 4568 df-uni 4840 df-int 4880 df-iun 4926 df-iin 4927 df-br 5075 df-opab 5137 df-mpt 5158 df-tr 5192 df-id 5489 df-eprel 5495 df-po 5503 df-so 5504 df-fr 5544 df-se 5545 df-we 5546 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-pred 6202 df-ord 6269 df-on 6270 df-lim 6271 df-suc 6272 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-isom 6442 df-riota 7232 df-ov 7278 df-oprab 7279 df-mpo 7280 df-of 7533 df-om 7713 df-1st 7831 df-2nd 7832 df-supp 7978 df-frecs 8097 df-wrecs 8128 df-recs 8202 df-rdg 8241 df-1o 8297 df-er 8498 df-map 8617 df-ixp 8686 df-en 8734 df-dom 8735 df-sdom 8736 df-fin 8737 df-fsupp 9129 df-sup 9201 df-oi 9269 df-card 9697 df-pnf 11011 df-mnf 11012 df-xr 11013 df-ltxr 11014 df-le 11015 df-sub 11207 df-neg 11208 df-nn 11974 df-2 12036 df-3 12037 df-4 12038 df-5 12039 df-6 12040 df-7 12041 df-8 12042 df-9 12043 df-n0 12234 df-z 12320 df-dec 12438 df-uz 12583 df-fz 13240 df-fzo 13383 df-seq 13722 df-hash 14045 df-struct 16848 df-sets 16865 df-slot 16883 df-ndx 16895 df-base 16913 df-ress 16942 df-plusg 16975 df-mulr 16976 df-sca 16978 df-vsca 16979 df-ip 16980 df-tset 16981 df-ple 16982 df-ds 16984 df-hom 16986 df-cco 16987 df-0g 17152 df-gsum 17153 df-prds 17158 df-pws 17160 df-mre 17295 df-mrc 17296 df-acs 17298 df-mgm 18326 df-sgrp 18375 df-mnd 18386 df-mhm 18430 df-submnd 18431 df-grp 18580 df-minusg 18581 df-sbg 18582 df-mulg 18701 df-subg 18752 df-ghm 18832 df-cntz 18923 df-cmn 19388 df-abl 19389 df-mgp 19721 df-ur 19738 df-ring 19785 df-subrg 20022 df-lmod 20125 df-lss 20194 df-lsp 20234 df-lmhm 20284 df-lmim 20285 df-lmic 20286 df-lbs 20337 df-sra 20434 df-rgmod 20435 df-nzr 20529 df-dsmm 20939 df-frlm 20954 df-uvc 20990 df-lindf 21013 df-linds 21014 |
This theorem is referenced by: lvecisfrlm 21050 |
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