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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 11131 | . . . . 5 ⊢ 0 ∈ ℂ | |
| 2 | eqid 2741 | . . . . . 6 ⊢ (abs ∘ − ) = (abs ∘ − ) | |
| 3 | 2 | cnmetdval 24757 | . . . . 5 ⊢ ((𝑥 ∈ ℂ ∧ 0 ∈ ℂ) → (𝑥(abs ∘ − )0) = (abs‘(𝑥 − 0))) |
| 4 | 1, 3 | mpan2 698 | . . . 4 ⊢ (𝑥 ∈ ℂ → (𝑥(abs ∘ − )0) = (abs‘(𝑥 − 0))) |
| 5 | subid1 11409 | . . . . 5 ⊢ (𝑥 ∈ ℂ → (𝑥 − 0) = 𝑥) | |
| 6 | 5 | fveq2d 6835 | . . . 4 ⊢ (𝑥 ∈ ℂ → (abs‘(𝑥 − 0)) = (abs‘𝑥)) |
| 7 | 4, 6 | eqtrd 2776 | . . 3 ⊢ (𝑥 ∈ ℂ → (𝑥(abs ∘ − )0) = (abs‘𝑥)) |
| 8 | 7 | mpteq2ia 5170 | . 2 ⊢ (𝑥 ∈ ℂ ↦ (𝑥(abs ∘ − )0)) = (𝑥 ∈ ℂ ↦ (abs‘𝑥)) |
| 9 | eqid 2741 | . . 3 ⊢ (norm‘ℂfld) = (norm‘ℂfld) | |
| 10 | cnfldbas 21355 | . . 3 ⊢ ℂ = (Base‘ℂfld) | |
| 11 | cnfld0 21375 | . . 3 ⊢ 0 = (0g‘ℂfld) | |
| 12 | cnfldds 21363 | . . 3 ⊢ (abs ∘ − ) = (dist‘ℂfld) | |
| 13 | 9, 10, 11, 12 | nmfval 24575 | . 2 ⊢ (norm‘ℂfld) = (𝑥 ∈ ℂ ↦ (𝑥(abs ∘ − )0)) |
| 14 | absf 15295 | . . . . 5 ⊢ abs:ℂ⟶ℝ | |
| 15 | 14 | a1i 11 | . . . 4 ⊢ (⊤ → abs:ℂ⟶ℝ) |
| 16 | 15 | feqmptd 6899 | . . 3 ⊢ (⊤ → abs = (𝑥 ∈ ℂ ↦ (abs‘𝑥))) |
| 17 | 16 | mptru 1555 | . 2 ⊢ abs = (𝑥 ∈ ℂ ↦ (abs‘𝑥)) |
| 18 | 8, 13, 17 | 3eqtr4ri 2775 | 1 ⊢ abs = (norm‘ℂfld) |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1548 ⊤wtru 1549 ∈ wcel 2121 ↦ cmpt 5156 ∘ ccom 5625 ⟶wf 6485 ‘cfv 6489 (class class class)co 7360 ℂcc 11031 ℝcr 11032 0cc0 11033 − cmin 11372 abscabs 15191 ℂfldccnfld 21351 normcnm 24563 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1975 ax-7 2016 ax-8 2123 ax-9 2131 ax-10 2154 ax-11 2170 ax-12 2191 ax-ext 2713 ax-sep 5221 ax-nul 5231 ax-pow 5297 ax-pr 5365 ax-un 7682 ax-cnex 11089 ax-resscn 11090 ax-1cn 11091 ax-icn 11092 ax-addcl 11093 ax-addrcl 11094 ax-mulcl 11095 ax-mulrcl 11096 ax-mulcom 11097 ax-addass 11098 ax-mulass 11099 ax-distr 11100 ax-i2m1 11101 ax-1ne0 11102 ax-1rid 11103 ax-rnegex 11104 ax-rrecex 11105 ax-cnre 11106 ax-pre-lttri 11107 ax-pre-lttrn 11108 ax-pre-ltadd 11109 ax-pre-mulgt0 11110 ax-pre-sup 11111 ax-addf 11112 |
| This theorem depends on definitions: df-bi 209 df-an 398 df-or 855 df-3or 1094 df-3an 1095 df-tru 1551 df-fal 1561 df-ex 1788 df-nf 1792 df-sb 2075 df-mo 2545 df-eu 2575 df-clab 2720 df-cleq 2733 df-clel 2816 df-nfc 2890 df-ne 2937 df-nel 3041 df-ral 3056 df-rex 3066 df-rmo 3346 df-reu 3347 df-rab 3394 df-v 3435 df-sbc 3726 df-csb 3834 df-dif 3888 df-un 3890 df-in 3892 df-ss 3902 df-pss 3905 df-nul 4265 df-if 4458 df-pw 4534 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4842 df-iun 4926 df-br 5076 df-opab 5138 df-mpt 5157 df-tr 5183 df-id 5516 df-eprel 5521 df-po 5529 df-so 5530 df-fr 5574 df-we 5576 df-xp 5627 df-rel 5628 df-cnv 5629 df-co 5630 df-dm 5631 df-rn 5632 df-res 5633 df-ima 5634 df-pred 6256 df-ord 6317 df-on 6318 df-lim 6319 df-suc 6320 df-iota 6445 df-fun 6491 df-fn 6492 df-f 6493 df-f1 6494 df-fo 6495 df-f1o 6496 df-fv 6497 df-riota 7317 df-ov 7363 df-oprab 7364 df-mpo 7365 df-om 7811 df-1st 7935 df-2nd 7936 df-frecs 8225 df-wrecs 8256 df-recs 8305 df-rdg 8343 df-1o 8399 df-er 8637 df-en 8888 df-dom 8889 df-sdom 8890 df-fin 8891 df-sup 9349 df-pnf 11176 df-mnf 11177 df-xr 11178 df-ltxr 11179 df-le 11180 df-sub 11374 df-neg 11375 df-div 11803 df-nn 12170 df-2 12239 df-3 12240 df-4 12241 df-5 12242 df-6 12243 df-7 12244 df-8 12245 df-9 12246 df-n0 12433 df-z 12520 df-dec 12640 df-uz 12784 df-rp 12938 df-fz 13457 df-seq 13959 df-exp 14019 df-cj 15056 df-re 15057 df-im 15058 df-sqrt 15192 df-abs 15193 df-struct 17112 df-sets 17129 df-slot 17147 df-ndx 17159 df-base 17175 df-plusg 17228 df-mulr 17229 df-starv 17230 df-tset 17234 df-ple 17235 df-ds 17237 df-unif 17238 df-0g 17399 df-mgm 18603 df-sgrp 18682 df-mnd 18698 df-grp 18907 df-cmn 19752 df-mgp 20117 df-ring 20211 df-cring 20212 df-cnfld 21352 df-nm 24569 |
| This theorem is referenced by: cnngp 24766 cnnrg 24767 abscn 24834 clmabs 25072 isncvsngp 25138 cnnm 25149 cnncvsabsnegdemo 25154 tcphcph 25226 zringnm 34154 cnzh 34164 rezh 34165 |
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