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| Mirrors > Home > MPE Home > Th. List > cvsdivcl | Structured version Visualization version GIF version | ||
| Description: The scalar field of a subcomplex vector space is closed under division. (Contributed by Thierry Arnoux, 22-May-2019.) |
| Ref | Expression |
|---|---|
| cvsdiv.f | ⊢ 𝐹 = (Scalar‘𝑊) |
| cvsdiv.k | ⊢ 𝐾 = (Base‘𝐹) |
| Ref | Expression |
|---|---|
| cvsdivcl | ⊢ ((𝑊 ∈ ℂVec ∧ (𝐴 ∈ 𝐾 ∧ 𝐵 ∈ 𝐾 ∧ 𝐵 ≠ 0)) → (𝐴 / 𝐵) ∈ 𝐾) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cvsdiv.f | . . 3 ⊢ 𝐹 = (Scalar‘𝑊) | |
| 2 | cvsdiv.k | . . 3 ⊢ 𝐾 = (Base‘𝐹) | |
| 3 | 1, 2 | cvsdiv 25321 | . 2 ⊢ ((𝑊 ∈ ℂVec ∧ (𝐴 ∈ 𝐾 ∧ 𝐵 ∈ 𝐾 ∧ 𝐵 ≠ 0)) → (𝐴 / 𝐵) = (𝐴(/r‘𝐹)𝐵)) |
| 4 | simpl 488 | . . . . 5 ⊢ ((𝑊 ∈ ℂVec ∧ (𝐴 ∈ 𝐾 ∧ 𝐵 ∈ 𝐾 ∧ 𝐵 ≠ 0)) → 𝑊 ∈ ℂVec) | |
| 5 | 4 | cvslvec 25314 | . . . 4 ⊢ ((𝑊 ∈ ℂVec ∧ (𝐴 ∈ 𝐾 ∧ 𝐵 ∈ 𝐾 ∧ 𝐵 ≠ 0)) → 𝑊 ∈ LVec) |
| 6 | 1 | lvecdrng 21256 | . . . 4 ⊢ (𝑊 ∈ LVec → 𝐹 ∈ DivRing) |
| 7 | drngring 20864 | . . . 4 ⊢ (𝐹 ∈ DivRing → 𝐹 ∈ Ring) | |
| 8 | 5, 6, 7 | 3syl 19 | . . 3 ⊢ ((𝑊 ∈ ℂVec ∧ (𝐴 ∈ 𝐾 ∧ 𝐵 ∈ 𝐾 ∧ 𝐵 ≠ 0)) → 𝐹 ∈ Ring) |
| 9 | simpr1 1213 | . . 3 ⊢ ((𝑊 ∈ ℂVec ∧ (𝐴 ∈ 𝐾 ∧ 𝐵 ∈ 𝐾 ∧ 𝐵 ≠ 0)) → 𝐴 ∈ 𝐾) | |
| 10 | simpr2 1214 | . . . . 5 ⊢ ((𝑊 ∈ ℂVec ∧ (𝐴 ∈ 𝐾 ∧ 𝐵 ∈ 𝐾 ∧ 𝐵 ≠ 0)) → 𝐵 ∈ 𝐾) | |
| 11 | simpr3 1215 | . . . . 5 ⊢ ((𝑊 ∈ ℂVec ∧ (𝐴 ∈ 𝐾 ∧ 𝐵 ∈ 𝐾 ∧ 𝐵 ≠ 0)) → 𝐵 ≠ 0) | |
| 12 | eldifsn 4758 | . . . . 5 ⊢ (𝐵 ∈ (𝐾 ∖ {0}) ↔ (𝐵 ∈ 𝐾 ∧ 𝐵 ≠ 0)) | |
| 13 | 10, 11, 12 | sylanbrc 595 | . . . 4 ⊢ ((𝑊 ∈ ℂVec ∧ (𝐴 ∈ 𝐾 ∧ 𝐵 ∈ 𝐾 ∧ 𝐵 ≠ 0)) → 𝐵 ∈ (𝐾 ∖ {0})) |
| 14 | 1, 2 | cvsunit 25320 | . . . . 5 ⊢ (𝑊 ∈ ℂVec → (𝐾 ∖ {0}) = (Unit‘𝐹)) |
| 15 | 14 | adantr 486 | . . . 4 ⊢ ((𝑊 ∈ ℂVec ∧ (𝐴 ∈ 𝐾 ∧ 𝐵 ∈ 𝐾 ∧ 𝐵 ≠ 0)) → (𝐾 ∖ {0}) = (Unit‘𝐹)) |
| 16 | 13, 15 | eleqtrd 2868 | . . 3 ⊢ ((𝑊 ∈ ℂVec ∧ (𝐴 ∈ 𝐾 ∧ 𝐵 ∈ 𝐾 ∧ 𝐵 ≠ 0)) → 𝐵 ∈ (Unit‘𝐹)) |
| 17 | eqid 2766 | . . . 4 ⊢ (Unit‘𝐹) = (Unit‘𝐹) | |
| 18 | eqid 2766 | . . . 4 ⊢ (/r‘𝐹) = (/r‘𝐹) | |
| 19 | 2, 17, 18 | dvrcl 20512 | . . 3 ⊢ ((𝐹 ∈ Ring ∧ 𝐴 ∈ 𝐾 ∧ 𝐵 ∈ (Unit‘𝐹)) → (𝐴(/r‘𝐹)𝐵) ∈ 𝐾) |
| 20 | 8, 9, 16, 19 | syl3anc 1398 | . 2 ⊢ ((𝑊 ∈ ℂVec ∧ (𝐴 ∈ 𝐾 ∧ 𝐵 ∈ 𝐾 ∧ 𝐵 ≠ 0)) → (𝐴(/r‘𝐹)𝐵) ∈ 𝐾) |
| 21 | 3, 20 | eqeltrd 2866 | 1 ⊢ ((𝑊 ∈ ℂVec ∧ (𝐴 ∈ 𝐾 ∧ 𝐵 ∈ 𝐾 ∧ 𝐵 ≠ 0)) → (𝐴 / 𝐵) ∈ 𝐾) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ∧ w3a 1103 = wceq 1570 ∈ wcel 2146 ≠ wne 2961 ∖ cdif 3905 {csn 4594 ‘cfv 6543 (class class class)co 7423 0cc0 11118 / cdiv 11889 Basecbs 17294 Scalarcsca 17338 Ringcrg 20340 Unitcui 20463 /rcdvr 20508 DivRingcdr 20857 LVecclvec 21253 ℂVecccvs 25312 |
| 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 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2738 ax-rep 5243 ax-sep 5262 ax-nul 5274 ax-pow 5341 ax-pr 5409 ax-un 7745 ax-cnex 11174 ax-resscn 11175 ax-1cn 11176 ax-icn 11177 ax-addcl 11178 ax-addrcl 11179 ax-mulcl 11180 ax-mulrcl 11181 ax-mulcom 11182 ax-addass 11183 ax-mulass 11184 ax-distr 11185 ax-i2m1 11186 ax-1ne0 11187 ax-1rid 11188 ax-rnegex 11189 ax-rrecex 11190 ax-cnre 11191 ax-pre-lttri 11192 ax-pre-lttrn 11193 ax-pre-ltadd 11194 ax-pre-mulgt0 11195 ax-addf 11197 |
| 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 2100 df-mo 2570 df-eu 2600 df-clab 2745 df-cleq 2758 df-clel 2841 df-nfc 2915 df-ne 2962 df-nel 3068 df-ral 3083 df-rex 3093 df-rmo 3372 df-reu 3373 df-rab 3420 df-v 3460 df-sbc 3748 df-csb 3857 df-dif 3911 df-un 3913 df-in 3915 df-ss 3925 df-pss 3928 df-nul 4290 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-tp 4599 df-op 4601 df-uni 4878 df-iun 4963 df-br 5115 df-opab 5179 df-mpt 5198 df-tr 5224 df-id 5561 df-eprel 5566 df-po 5574 df-so 5575 df-fr 5619 df-we 5621 df-xp 5672 df-rel 5673 df-cnv 5674 df-co 5675 df-dm 5676 df-rn 5677 df-res 5678 df-ima 5679 df-pred 6309 df-ord 6370 df-on 6371 df-lim 6372 df-suc 6373 df-iota 6499 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-riota 7380 df-ov 7426 df-oprab 7427 df-mpo 7428 df-om 7872 df-1st 7995 df-2nd 7996 df-tpos 8231 df-frecs 8287 df-wrecs 8318 df-recs 8367 df-rdg 8406 df-1o 8462 df-er 8703 df-en 8953 df-dom 8954 df-sdom 8955 df-fin 8956 df-pnf 11263 df-mnf 11264 df-xr 11265 df-ltxr 11266 df-le 11267 df-sub 11461 df-neg 11462 df-div 11890 df-nn 12252 df-2 12321 df-3 12322 df-4 12323 df-5 12324 df-6 12325 df-7 12326 df-8 12327 df-9 12328 df-n0 12523 df-z 12610 df-dec 12730 df-uz 12881 df-fz 13554 df-struct 17232 df-sets 17249 df-slot 17267 df-ndx 17279 df-base 17295 df-ress 17316 df-plusg 17348 df-mulr 17349 df-starv 17350 df-tset 17354 df-ple 17355 df-ds 17357 df-unif 17358 df-0g 17519 df-mgm 18723 df-sgrp 18802 df-mnd 18818 df-grp 19028 df-minusg 19029 df-subg 19214 df-cmn 19877 df-abl 19878 df-mgp 20242 df-rng 20256 df-ur 20289 df-ring 20342 df-cring 20343 df-oppr 20445 df-dvdsr 20465 df-unit 20466 df-invr 20496 df-dvr 20509 df-subrg 20699 df-drng 20859 df-lvec 21254 df-cnfld 21553 df-clm 25252 df-cvs 25313 |
| This theorem is used by: cvsmuleqdivd 25323 cvsdiveqd 25324 ttgcontlem1 29264 |
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