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| Mirrors > Home > MPE Home > Th. List > cnfldnm | Structured version Visualization version GIF version | ||
| Description: The norm of the field of complex numbers. (Contributed by Mario Carneiro, 4-Oct-2015.) |
| Ref | Expression |
|---|---|
| cnfldnm | ⊢ abs = (norm‘ℂfld) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 0cn 11247 | . . . . 5 ⊢ 0 ∈ ℂ | |
| 2 | eqid 2760 | . . . . . 6 ⊢ (abs ∘ − ) = (abs ∘ − ) | |
| 3 | 2 | cnmetdval 25028 | . . . . 5 ⊢ ((𝑥 ∈ ℂ ∧ 0 ∈ ℂ) → (𝑥(abs ∘ − )0) = (abs‘(𝑥 − 0))) |
| 4 | 1, 3 | mpan2 704 | . . . 4 ⊢ (𝑥 ∈ ℂ → (𝑥(abs ∘ − )0) = (abs‘(𝑥 − 0))) |
| 5 | subid1 11527 | . . . . 5 ⊢ (𝑥 ∈ ℂ → (𝑥 − 0) = 𝑥) | |
| 6 | 5 | fveq2d 6885 | . . . 4 ⊢ (𝑥 ∈ ℂ → (abs‘(𝑥 − 0)) = (abs‘𝑥)) |
| 7 | 4, 6 | eqtrd 2795 | . . 3 ⊢ (𝑥 ∈ ℂ → (𝑥(abs ∘ − )0) = (abs‘𝑥)) |
| 8 | 7 | mpteq2ia 5200 | . 2 ⊢ (𝑥 ∈ ℂ ↦ (𝑥(abs ∘ − )0)) = (𝑥 ∈ ℂ ↦ (abs‘𝑥)) |
| 9 | eqid 2760 | . . 3 ⊢ (norm‘ℂfld) = (norm‘ℂfld) | |
| 10 | cnfldbas 21621 | . . 3 ⊢ ℂ = (Base‘ℂfld) | |
| 11 | cnfld0 21641 | . . 3 ⊢ 0 = (0g‘ℂfld) | |
| 12 | cnfldds 21629 | . . 3 ⊢ (abs ∘ − ) = (dist‘ℂfld) | |
| 13 | 9, 10, 11, 12 | nmfval 24846 | . 2 ⊢ (norm‘ℂfld) = (𝑥 ∈ ℂ ↦ (𝑥(abs ∘ − )0)) |
| 14 | absf 15450 | . . . . 5 ⊢ abs:ℂ⟶ℝ | |
| 15 | 14 | a1i 11 | . . . 4 ⊢ (⊤ → abs:ℂ⟶ℝ) |
| 16 | 15 | feqmptd 6949 | . . 3 ⊢ (⊤ → abs = (𝑥 ∈ ℂ ↦ (abs‘𝑥))) |
| 17 | 16 | mptru 1577 | . 2 ⊢ abs = (𝑥 ∈ ℂ ↦ (abs‘𝑥)) |
| 18 | 8, 13, 17 | 3eqtr4ri 2794 | 1 ⊢ abs = (norm‘ℂfld) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 ⊤wtru 1571 ∈ wcel 2145 ↦ cmpt 5186 ∘ ccom 5659 ⟶wf 6531 ‘cfv 6535 (class class class)co 7416 ℂcc 11147 ℝcr 11148 0cc0 11149 − cmin 11490 abscabs 15346 ℂfldccnfld 21617 normcnm 24834 |
| 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 7742 ax-cnex 11205 ax-resscn 11206 ax-1cn 11207 ax-icn 11208 ax-addcl 11209 ax-addrcl 11210 ax-mulcl 11211 ax-mulrcl 11212 ax-mulcom 11213 ax-addass 11214 ax-mulass 11215 ax-distr 11216 ax-i2m1 11217 ax-1ne0 11218 ax-1rid 11219 ax-rnegex 11220 ax-rrecex 11221 ax-cnre 11222 ax-pre-lttri 11223 ax-pre-lttrn 11224 ax-pre-ltadd 11225 ax-pre-mulgt0 11226 ax-pre-sup 11227 ax-addf 11228 |
| 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-rmo 3365 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-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-tp 4589 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5550 df-eprel 5555 df-po 5563 df-so 5564 df-fr 5608 df-we 5610 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-pred 6301 df-ord 6362 df-on 6363 df-lim 6364 df-suc 6365 df-iota 6491 df-fun 6537 df-fn 6538 df-f 6539 df-f1 6540 df-fo 6541 df-f1o 6542 df-fv 6543 df-riota 7373 df-ov 7419 df-oprab 7420 df-mpo 7421 df-om 7869 df-1st 7992 df-2nd 7993 df-frecs 8285 df-wrecs 8316 df-recs 8365 df-rdg 8404 df-1o 8462 df-er 8703 df-en 8960 df-dom 8961 df-sdom 8962 df-fin 8963 df-sup 9419 df-pnf 11294 df-mnf 11295 df-xr 11296 df-ltxr 11297 df-le 11298 df-sub 11492 df-neg 11493 df-div 11921 df-nn 12283 df-2 12352 df-3 12353 df-4 12354 df-5 12355 df-6 12356 df-7 12357 df-8 12358 df-9 12359 df-n0 12554 df-z 12641 df-dec 12762 df-uz 12913 df-rp 13068 df-fz 13587 df-seq 14091 df-exp 14151 df-cj 15211 df-re 15212 df-im 15213 df-sqrt 15347 df-abs 15348 df-struct 17264 df-sets 17281 df-slot 17299 df-ndx 17311 df-base 17327 df-plusg 17380 df-mulr 17381 df-starv 17382 df-tset 17386 df-ple 17387 df-ds 17389 df-unif 17390 df-0g 17551 df-mgm 18755 df-sgrp 18847 df-mnd 18863 df-grp 19086 df-cmn 19935 df-mgp 20300 df-ring 20400 df-cring 20401 df-cnfld 21618 df-nm 24840 |
| This theorem is used by: cnngp 25037 cnnrg 25038 abscn 25105 clmabs 25343 isncvsngp 25409 cnnm 25420 cnncvsabsnegdemo 25425 tcphcph 25497 zringnm 34501 cnzh 34511 rezh 34512 |
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