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Mirrors > Home > MPE Home > Th. List > Mathboxes > lkr0f | Structured version Visualization version GIF version |
Description: The kernel of the zero functional is the set of all vectors. (Contributed by NM, 17-Apr-2014.) |
Ref | Expression |
---|---|
lkr0f.d | ⊢ 𝐷 = (Scalar‘𝑊) |
lkr0f.o | ⊢ 0 = (0g‘𝐷) |
lkr0f.v | ⊢ 𝑉 = (Base‘𝑊) |
lkr0f.f | ⊢ 𝐹 = (LFnl‘𝑊) |
lkr0f.k | ⊢ 𝐾 = (LKer‘𝑊) |
Ref | Expression |
---|---|
lkr0f | ⊢ ((𝑊 ∈ LMod ∧ 𝐺 ∈ 𝐹) → ((𝐾‘𝐺) = 𝑉 ↔ 𝐺 = (𝑉 × { 0 }))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | lkr0f.d | . . . . . . 7 ⊢ 𝐷 = (Scalar‘𝑊) | |
2 | eqid 2739 | . . . . . . 7 ⊢ (Base‘𝐷) = (Base‘𝐷) | |
3 | lkr0f.v | . . . . . . 7 ⊢ 𝑉 = (Base‘𝑊) | |
4 | lkr0f.f | . . . . . . 7 ⊢ 𝐹 = (LFnl‘𝑊) | |
5 | 1, 2, 3, 4 | lflf 37056 | . . . . . 6 ⊢ ((𝑊 ∈ LMod ∧ 𝐺 ∈ 𝐹) → 𝐺:𝑉⟶(Base‘𝐷)) |
6 | 5 | ffnd 6597 | . . . . 5 ⊢ ((𝑊 ∈ LMod ∧ 𝐺 ∈ 𝐹) → 𝐺 Fn 𝑉) |
7 | 6 | adantr 480 | . . . 4 ⊢ (((𝑊 ∈ LMod ∧ 𝐺 ∈ 𝐹) ∧ (𝐾‘𝐺) = 𝑉) → 𝐺 Fn 𝑉) |
8 | lkr0f.o | . . . . . . 7 ⊢ 0 = (0g‘𝐷) | |
9 | lkr0f.k | . . . . . . 7 ⊢ 𝐾 = (LKer‘𝑊) | |
10 | 1, 8, 4, 9 | lkrval 37081 | . . . . . 6 ⊢ ((𝑊 ∈ LMod ∧ 𝐺 ∈ 𝐹) → (𝐾‘𝐺) = (◡𝐺 “ { 0 })) |
11 | 10 | eqeq1d 2741 | . . . . 5 ⊢ ((𝑊 ∈ LMod ∧ 𝐺 ∈ 𝐹) → ((𝐾‘𝐺) = 𝑉 ↔ (◡𝐺 “ { 0 }) = 𝑉)) |
12 | 11 | biimpa 476 | . . . 4 ⊢ (((𝑊 ∈ LMod ∧ 𝐺 ∈ 𝐹) ∧ (𝐾‘𝐺) = 𝑉) → (◡𝐺 “ { 0 }) = 𝑉) |
13 | 8 | fvexi 6782 | . . . . . 6 ⊢ 0 ∈ V |
14 | 13 | fconst2 7074 | . . . . 5 ⊢ (𝐺:𝑉⟶{ 0 } ↔ 𝐺 = (𝑉 × { 0 })) |
15 | fconst4 7084 | . . . . 5 ⊢ (𝐺:𝑉⟶{ 0 } ↔ (𝐺 Fn 𝑉 ∧ (◡𝐺 “ { 0 }) = 𝑉)) | |
16 | 14, 15 | bitr3i 276 | . . . 4 ⊢ (𝐺 = (𝑉 × { 0 }) ↔ (𝐺 Fn 𝑉 ∧ (◡𝐺 “ { 0 }) = 𝑉)) |
17 | 7, 12, 16 | sylanbrc 582 | . . 3 ⊢ (((𝑊 ∈ LMod ∧ 𝐺 ∈ 𝐹) ∧ (𝐾‘𝐺) = 𝑉) → 𝐺 = (𝑉 × { 0 })) |
18 | 17 | ex 412 | . 2 ⊢ ((𝑊 ∈ LMod ∧ 𝐺 ∈ 𝐹) → ((𝐾‘𝐺) = 𝑉 → 𝐺 = (𝑉 × { 0 }))) |
19 | 16 | biimpi 215 | . . . . . 6 ⊢ (𝐺 = (𝑉 × { 0 }) → (𝐺 Fn 𝑉 ∧ (◡𝐺 “ { 0 }) = 𝑉)) |
20 | 19 | adantl 481 | . . . . 5 ⊢ ((𝑊 ∈ LMod ∧ 𝐺 = (𝑉 × { 0 })) → (𝐺 Fn 𝑉 ∧ (◡𝐺 “ { 0 }) = 𝑉)) |
21 | simpr 484 | . . . . . . . . 9 ⊢ ((𝑊 ∈ LMod ∧ 𝐺 = (𝑉 × { 0 })) → 𝐺 = (𝑉 × { 0 })) | |
22 | eqid 2739 | . . . . . . . . . . 11 ⊢ (LFnl‘𝑊) = (LFnl‘𝑊) | |
23 | 1, 8, 3, 22 | lfl0f 37062 | . . . . . . . . . 10 ⊢ (𝑊 ∈ LMod → (𝑉 × { 0 }) ∈ (LFnl‘𝑊)) |
24 | 23 | adantr 480 | . . . . . . . . 9 ⊢ ((𝑊 ∈ LMod ∧ 𝐺 = (𝑉 × { 0 })) → (𝑉 × { 0 }) ∈ (LFnl‘𝑊)) |
25 | 21, 24 | eqeltrd 2840 | . . . . . . . 8 ⊢ ((𝑊 ∈ LMod ∧ 𝐺 = (𝑉 × { 0 })) → 𝐺 ∈ (LFnl‘𝑊)) |
26 | 1, 8, 22, 9 | lkrval 37081 | . . . . . . . 8 ⊢ ((𝑊 ∈ LMod ∧ 𝐺 ∈ (LFnl‘𝑊)) → (𝐾‘𝐺) = (◡𝐺 “ { 0 })) |
27 | 25, 26 | syldan 590 | . . . . . . 7 ⊢ ((𝑊 ∈ LMod ∧ 𝐺 = (𝑉 × { 0 })) → (𝐾‘𝐺) = (◡𝐺 “ { 0 })) |
28 | 27 | eqeq1d 2741 | . . . . . 6 ⊢ ((𝑊 ∈ LMod ∧ 𝐺 = (𝑉 × { 0 })) → ((𝐾‘𝐺) = 𝑉 ↔ (◡𝐺 “ { 0 }) = 𝑉)) |
29 | ffn 6596 | . . . . . . . . 9 ⊢ (𝐺:𝑉⟶{ 0 } → 𝐺 Fn 𝑉) | |
30 | 14, 29 | sylbir 234 | . . . . . . . 8 ⊢ (𝐺 = (𝑉 × { 0 }) → 𝐺 Fn 𝑉) |
31 | 30 | adantl 481 | . . . . . . 7 ⊢ ((𝑊 ∈ LMod ∧ 𝐺 = (𝑉 × { 0 })) → 𝐺 Fn 𝑉) |
32 | 31 | biantrurd 532 | . . . . . 6 ⊢ ((𝑊 ∈ LMod ∧ 𝐺 = (𝑉 × { 0 })) → ((◡𝐺 “ { 0 }) = 𝑉 ↔ (𝐺 Fn 𝑉 ∧ (◡𝐺 “ { 0 }) = 𝑉))) |
33 | 28, 32 | bitrd 278 | . . . . 5 ⊢ ((𝑊 ∈ LMod ∧ 𝐺 = (𝑉 × { 0 })) → ((𝐾‘𝐺) = 𝑉 ↔ (𝐺 Fn 𝑉 ∧ (◡𝐺 “ { 0 }) = 𝑉))) |
34 | 20, 33 | mpbird 256 | . . . 4 ⊢ ((𝑊 ∈ LMod ∧ 𝐺 = (𝑉 × { 0 })) → (𝐾‘𝐺) = 𝑉) |
35 | 34 | ex 412 | . . 3 ⊢ (𝑊 ∈ LMod → (𝐺 = (𝑉 × { 0 }) → (𝐾‘𝐺) = 𝑉)) |
36 | 35 | adantr 480 | . 2 ⊢ ((𝑊 ∈ LMod ∧ 𝐺 ∈ 𝐹) → (𝐺 = (𝑉 × { 0 }) → (𝐾‘𝐺) = 𝑉)) |
37 | 18, 36 | impbid 211 | 1 ⊢ ((𝑊 ∈ LMod ∧ 𝐺 ∈ 𝐹) → ((𝐾‘𝐺) = 𝑉 ↔ 𝐺 = (𝑉 × { 0 }))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 395 = wceq 1541 ∈ wcel 2109 {csn 4566 × cxp 5586 ◡ccnv 5587 “ cima 5591 Fn wfn 6425 ⟶wf 6426 ‘cfv 6430 Basecbs 16893 Scalarcsca 16946 0gc0g 17131 LModclmod 20104 LFnlclfn 37050 LKerclk 37078 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1801 ax-4 1815 ax-5 1916 ax-6 1974 ax-7 2014 ax-8 2111 ax-9 2119 ax-10 2140 ax-11 2157 ax-12 2174 ax-ext 2710 ax-rep 5213 ax-sep 5226 ax-nul 5233 ax-pow 5291 ax-pr 5355 ax-un 7579 ax-cnex 10911 ax-resscn 10912 ax-1cn 10913 ax-icn 10914 ax-addcl 10915 ax-addrcl 10916 ax-mulcl 10917 ax-mulrcl 10918 ax-mulcom 10919 ax-addass 10920 ax-mulass 10921 ax-distr 10922 ax-i2m1 10923 ax-1ne0 10924 ax-1rid 10925 ax-rnegex 10926 ax-rrecex 10927 ax-cnre 10928 ax-pre-lttri 10929 ax-pre-lttrn 10930 ax-pre-ltadd 10931 ax-pre-mulgt0 10932 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1544 df-fal 1554 df-ex 1786 df-nf 1790 df-sb 2071 df-mo 2541 df-eu 2570 df-clab 2717 df-cleq 2731 df-clel 2817 df-nfc 2890 df-ne 2945 df-nel 3051 df-ral 3070 df-rex 3071 df-reu 3072 df-rmo 3073 df-rab 3074 df-v 3432 df-sbc 3720 df-csb 3837 df-dif 3894 df-un 3896 df-in 3898 df-ss 3908 df-pss 3910 df-nul 4262 df-if 4465 df-pw 4540 df-sn 4567 df-pr 4569 df-tp 4571 df-op 4573 df-uni 4845 df-iun 4931 df-br 5079 df-opab 5141 df-mpt 5162 df-tr 5196 df-id 5488 df-eprel 5494 df-po 5502 df-so 5503 df-fr 5543 df-we 5545 df-xp 5594 df-rel 5595 df-cnv 5596 df-co 5597 df-dm 5598 df-rn 5599 df-res 5600 df-ima 5601 df-pred 6199 df-ord 6266 df-on 6267 df-lim 6268 df-suc 6269 df-iota 6388 df-fun 6432 df-fn 6433 df-f 6434 df-f1 6435 df-fo 6436 df-f1o 6437 df-fv 6438 df-riota 7225 df-ov 7271 df-oprab 7272 df-mpo 7273 df-om 7701 df-2nd 7818 df-frecs 8081 df-wrecs 8112 df-recs 8186 df-rdg 8225 df-er 8472 df-map 8591 df-en 8708 df-dom 8709 df-sdom 8710 df-pnf 10995 df-mnf 10996 df-xr 10997 df-ltxr 10998 df-le 10999 df-sub 11190 df-neg 11191 df-nn 11957 df-2 12019 df-sets 16846 df-slot 16864 df-ndx 16876 df-base 16894 df-plusg 16956 df-0g 17133 df-mgm 18307 df-sgrp 18356 df-mnd 18367 df-grp 18561 df-mgp 19702 df-ring 19766 df-lmod 20106 df-lfl 37051 df-lkr 37079 |
This theorem is referenced by: lkrscss 37091 eqlkr 37092 lkrshp 37098 lkrshp3 37099 lkrshpor 37100 lfl1dim 37114 lfl1dim2N 37115 lkr0f2 37154 lclkrlem1 39499 lclkrlem2j 39509 lclkr 39526 lclkrs 39532 mapd0 39658 |
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