| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > cnmetdval | Structured version Visualization version GIF version | ||
| Description: Value of the distance function of the metric space of complex numbers. (Contributed by NM, 9-Dec-2006.) (Revised by Mario Carneiro, 27-Dec-2014.) |
| Ref | Expression |
|---|---|
| cnmetdval.1 | ⊢ 𝐷 = (abs ∘ − ) |
| Ref | Expression |
|---|---|
| cnmetdval | ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴𝐷𝐵) = (abs‘(𝐴 − 𝐵))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | subf 11486 | . . 3 ⊢ − :(ℂ × ℂ)⟶ℂ | |
| 2 | opelxpi 5692 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → 〈𝐴, 𝐵〉 ∈ (ℂ × ℂ)) | |
| 3 | fvco3 6979 | . . 3 ⊢ (( − :(ℂ × ℂ)⟶ℂ ∧ 〈𝐴, 𝐵〉 ∈ (ℂ × ℂ)) → ((abs ∘ − )‘〈𝐴, 𝐵〉) = (abs‘( − ‘〈𝐴, 𝐵〉))) | |
| 4 | 1, 2, 3 | sylancr 599 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((abs ∘ − )‘〈𝐴, 𝐵〉) = (abs‘( − ‘〈𝐴, 𝐵〉))) |
| 5 | df-ov 7417 | . . 3 ⊢ (𝐴𝐷𝐵) = (𝐷‘〈𝐴, 𝐵〉) | |
| 6 | cnmetdval.1 | . . . 4 ⊢ 𝐷 = (abs ∘ − ) | |
| 7 | 6 | fveq1i 6880 | . . 3 ⊢ (𝐷‘〈𝐴, 𝐵〉) = ((abs ∘ − )‘〈𝐴, 𝐵〉) |
| 8 | 5, 7 | eqtri 2783 | . 2 ⊢ (𝐴𝐷𝐵) = ((abs ∘ − )‘〈𝐴, 𝐵〉) |
| 9 | df-ov 7417 | . . 3 ⊢ (𝐴 − 𝐵) = ( − ‘〈𝐴, 𝐵〉) | |
| 10 | 9 | fveq2i 6882 | . 2 ⊢ (abs‘(𝐴 − 𝐵)) = (abs‘( − ‘〈𝐴, 𝐵〉)) |
| 11 | 4, 8, 10 | 3eqtr4g 2820 | 1 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴𝐷𝐵) = (abs‘(𝐴 − 𝐵))) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2145 〈cop 4590 × cxp 5653 ∘ ccom 5659 ⟶wf 6529 ‘cfv 6533 (class class class)co 7414 ℂcc 11125 − cmin 11468 abscabs 15324 |
| 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 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-sep 5251 ax-nul 5263 ax-pow 5330 ax-pr 5398 ax-un 7737 ax-resscn 11184 ax-1cn 11185 ax-icn 11186 ax-addcl 11187 ax-addrcl 11188 ax-mulcl 11189 ax-mulrcl 11190 ax-mulcom 11191 ax-addass 11192 ax-mulass 11193 ax-distr 11194 ax-i2m1 11195 ax-1ne0 11196 ax-1rid 11197 ax-rnegex 11198 ax-rrecex 11199 ax-cnre 11200 ax-pre-lttri 11201 ax-pre-lttrn 11202 ax-pre-ltadd 11203 |
| 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 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-id 5550 df-po 5563 df-so 5564 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-iota 6489 df-fun 6535 df-fn 6536 df-f 6537 df-f1 6538 df-fo 6539 df-f1o 6540 df-fv 6541 df-riota 7371 df-ov 7417 df-oprab 7418 df-mpo 7419 df-1st 7987 df-2nd 7988 df-er 8699 df-en 8956 df-dom 8957 df-sdom 8958 df-pnf 11272 df-mnf 11273 df-ltxr 11275 df-sub 11470 |
| This theorem is used by: cnmet 25000 cnbl0 25002 cnblcld 25003 cnfldnm 25007 remetdval 25018 blcvx 25027 recld2 25044 zdis 25046 reperflem 25048 addcnlem 25094 divcn 25099 cncfmet 25140 cnheibor 25186 cnllycmp 25187 ipcn 25477 lmclim 25534 cncmet 25553 ovolfsval 25701 ellimc3 26109 lhop1lem 26243 ftc1lem6 26271 ulmdvlem1 26639 psercn 26665 pserdvlem2 26667 abelthlem2 26671 abelthlem3 26672 abelthlem5 26674 abelthlem7 26677 abelth 26680 dvlog2lem 26892 efopn 26898 logtayl 26900 logtayl2 26902 cxpcn3 26988 rlimcnp 27205 xrlimcnp 27208 efrlim 27209 lgamucov 27277 lgamcvg2 27294 ftalem3 27314 smcnlem 31181 hhcnf 32389 tpr2rico 34425 qqhcn 34504 qqhucn 34505 ftc1cnnc 38444 cntotbnd 38549 iccbnd 38593 cnmetcoval 46036 iooabslt 46332 limcrecl 46462 islpcn 46470 stirlinglem5 46909 ovolval2lem 47474 ovolval3 47478 |
| Copyright terms: Public domain | W3C validator |