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Mathbox for Norm Megill |
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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 2735 | . . . . . . 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 39045 | . . . . . 6 ⊢ ((𝑊 ∈ LMod ∧ 𝐺 ∈ 𝐹) → 𝐺:𝑉⟶(Base‘𝐷)) |
6 | 5 | ffnd 6738 | . . . . 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 39070 | . . . . . 6 ⊢ ((𝑊 ∈ LMod ∧ 𝐺 ∈ 𝐹) → (𝐾‘𝐺) = (◡𝐺 “ { 0 })) |
11 | 10 | eqeq1d 2737 | . . . . 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 6921 | . . . . . 6 ⊢ 0 ∈ V |
14 | 13 | fconst2 7225 | . . . . 5 ⊢ (𝐺:𝑉⟶{ 0 } ↔ 𝐺 = (𝑉 × { 0 })) |
15 | fconst4 7234 | . . . . 5 ⊢ (𝐺:𝑉⟶{ 0 } ↔ (𝐺 Fn 𝑉 ∧ (◡𝐺 “ { 0 }) = 𝑉)) | |
16 | 14, 15 | bitr3i 277 | . . . 4 ⊢ (𝐺 = (𝑉 × { 0 }) ↔ (𝐺 Fn 𝑉 ∧ (◡𝐺 “ { 0 }) = 𝑉)) |
17 | 7, 12, 16 | sylanbrc 583 | . . 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 216 | . . . . . 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 2735 | . . . . . . . . . . 11 ⊢ (LFnl‘𝑊) = (LFnl‘𝑊) | |
23 | 1, 8, 3, 22 | lfl0f 39051 | . . . . . . . . . 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 2839 | . . . . . . . 8 ⊢ ((𝑊 ∈ LMod ∧ 𝐺 = (𝑉 × { 0 })) → 𝐺 ∈ (LFnl‘𝑊)) |
26 | 1, 8, 22, 9 | lkrval 39070 | . . . . . . . 8 ⊢ ((𝑊 ∈ LMod ∧ 𝐺 ∈ (LFnl‘𝑊)) → (𝐾‘𝐺) = (◡𝐺 “ { 0 })) |
27 | 25, 26 | syldan 591 | . . . . . . 7 ⊢ ((𝑊 ∈ LMod ∧ 𝐺 = (𝑉 × { 0 })) → (𝐾‘𝐺) = (◡𝐺 “ { 0 })) |
28 | 27 | eqeq1d 2737 | . . . . . 6 ⊢ ((𝑊 ∈ LMod ∧ 𝐺 = (𝑉 × { 0 })) → ((𝐾‘𝐺) = 𝑉 ↔ (◡𝐺 “ { 0 }) = 𝑉)) |
29 | ffn 6737 | . . . . . . . . 9 ⊢ (𝐺:𝑉⟶{ 0 } → 𝐺 Fn 𝑉) | |
30 | 14, 29 | sylbir 235 | . . . . . . . 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 279 | . . . . 5 ⊢ ((𝑊 ∈ LMod ∧ 𝐺 = (𝑉 × { 0 })) → ((𝐾‘𝐺) = 𝑉 ↔ (𝐺 Fn 𝑉 ∧ (◡𝐺 “ { 0 }) = 𝑉))) |
34 | 20, 33 | mpbird 257 | . . . 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 212 | 1 ⊢ ((𝑊 ∈ LMod ∧ 𝐺 ∈ 𝐹) → ((𝐾‘𝐺) = 𝑉 ↔ 𝐺 = (𝑉 × { 0 }))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 = wceq 1537 ∈ wcel 2106 {csn 4631 × cxp 5687 ◡ccnv 5688 “ cima 5692 Fn wfn 6558 ⟶wf 6559 ‘cfv 6563 Basecbs 17245 Scalarcsca 17301 0gc0g 17486 LModclmod 20875 LFnlclfn 39039 LKerclk 39067 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1908 ax-6 1965 ax-7 2005 ax-8 2108 ax-9 2116 ax-10 2139 ax-11 2155 ax-12 2175 ax-ext 2706 ax-rep 5285 ax-sep 5302 ax-nul 5312 ax-pow 5371 ax-pr 5438 ax-un 7754 ax-cnex 11209 ax-resscn 11210 ax-1cn 11211 ax-icn 11212 ax-addcl 11213 ax-addrcl 11214 ax-mulcl 11215 ax-mulrcl 11216 ax-mulcom 11217 ax-addass 11218 ax-mulass 11219 ax-distr 11220 ax-i2m1 11221 ax-1ne0 11222 ax-1rid 11223 ax-rnegex 11224 ax-rrecex 11225 ax-cnre 11226 ax-pre-lttri 11227 ax-pre-lttrn 11228 ax-pre-ltadd 11229 ax-pre-mulgt0 11230 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1540 df-fal 1550 df-ex 1777 df-nf 1781 df-sb 2063 df-mo 2538 df-eu 2567 df-clab 2713 df-cleq 2727 df-clel 2814 df-nfc 2890 df-ne 2939 df-nel 3045 df-ral 3060 df-rex 3069 df-rmo 3378 df-reu 3379 df-rab 3434 df-v 3480 df-sbc 3792 df-csb 3909 df-dif 3966 df-un 3968 df-in 3970 df-ss 3980 df-pss 3983 df-nul 4340 df-if 4532 df-pw 4607 df-sn 4632 df-pr 4634 df-op 4638 df-uni 4913 df-iun 4998 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5583 df-eprel 5589 df-po 5597 df-so 5598 df-fr 5641 df-we 5643 df-xp 5695 df-rel 5696 df-cnv 5697 df-co 5698 df-dm 5699 df-rn 5700 df-res 5701 df-ima 5702 df-pred 6323 df-ord 6389 df-on 6390 df-lim 6391 df-suc 6392 df-iota 6516 df-fun 6565 df-fn 6566 df-f 6567 df-f1 6568 df-fo 6569 df-f1o 6570 df-fv 6571 df-riota 7388 df-ov 7434 df-oprab 7435 df-mpo 7436 df-om 7888 df-2nd 8014 df-frecs 8305 df-wrecs 8336 df-recs 8410 df-rdg 8449 df-er 8744 df-map 8867 df-en 8985 df-dom 8986 df-sdom 8987 df-pnf 11295 df-mnf 11296 df-xr 11297 df-ltxr 11298 df-le 11299 df-sub 11492 df-neg 11493 df-nn 12265 df-2 12327 df-sets 17198 df-slot 17216 df-ndx 17228 df-base 17246 df-plusg 17311 df-0g 17488 df-mgm 18666 df-sgrp 18745 df-mnd 18761 df-grp 18967 df-minusg 18968 df-cmn 19815 df-abl 19816 df-mgp 20153 df-rng 20171 df-ur 20200 df-ring 20253 df-lmod 20877 df-lfl 39040 df-lkr 39068 |
This theorem is referenced by: lkrscss 39080 eqlkr 39081 lkrshp 39087 lkrshp3 39088 lkrshpor 39089 lfl1dim 39103 lfl1dim2N 39104 lkr0f2 39143 lclkrlem1 41489 lclkrlem2j 41499 lclkr 41516 lclkrs 41522 mapd0 41648 |
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