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| Mirrors > Home > MPE Home > Th. List > nmsq | Structured version Visualization version GIF version | ||
| Description: The square of the norm is the norm of an inner product in a subcomplex pre-Hilbert space. Equation I4 of [Ponnusamy] p. 362. (Contributed by NM, 1-Feb-2007.) (Revised by Mario Carneiro, 7-Oct-2015.) |
| Ref | Expression |
|---|---|
| nmsq.v | ⊢ 𝑉 = (Base‘𝑊) |
| nmsq.h | ⊢ , = (·𝑖‘𝑊) |
| nmsq.n | ⊢ 𝑁 = (norm‘𝑊) |
| Ref | Expression |
|---|---|
| nmsq | ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝐴 ∈ 𝑉) → ((𝑁‘𝐴)↑2) = (𝐴 , 𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nmsq.v | . . . 4 ⊢ 𝑉 = (Base‘𝑊) | |
| 2 | nmsq.h | . . . 4 ⊢ , = (·𝑖‘𝑊) | |
| 3 | nmsq.n | . . . 4 ⊢ 𝑁 = (norm‘𝑊) | |
| 4 | 1, 2, 3 | cphnm 25383 | . . 3 ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝐴 ∈ 𝑉) → (𝑁‘𝐴) = (√‘(𝐴 , 𝐴))) |
| 5 | 4 | oveq1d 7431 | . 2 ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝐴 ∈ 𝑉) → ((𝑁‘𝐴)↑2) = ((√‘(𝐴 , 𝐴))↑2)) |
| 6 | 1, 2 | cphipcl 25381 | . . . 4 ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝐴 ∈ 𝑉 ∧ 𝐴 ∈ 𝑉) → (𝐴 , 𝐴) ∈ ℂ) |
| 7 | 6 | 3anidm23 1448 | . . 3 ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝐴 ∈ 𝑉) → (𝐴 , 𝐴) ∈ ℂ) |
| 8 | 7 | sqsqrtd 15513 | . 2 ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝐴 ∈ 𝑉) → ((√‘(𝐴 , 𝐴))↑2) = (𝐴 , 𝐴)) |
| 9 | 5, 8 | eqtrd 2800 | 1 ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝐴 ∈ 𝑉) → ((𝑁‘𝐴)↑2) = (𝐴 , 𝐴)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2146 ‘cfv 6540 (class class class)co 7416 ℂcc 11109 2c2 12306 ↑cexp 14111 √csqrt 15304 Basecbs 17287 ·𝑖cip 17333 normcnm 24764 ℂPreHilccph 25356 |
| 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 2737 ax-rep 5240 ax-sep 5259 ax-nul 5271 ax-pow 5338 ax-pr 5406 ax-un 7738 ax-cnex 11167 ax-resscn 11168 ax-1cn 11169 ax-icn 11170 ax-addcl 11171 ax-addrcl 11172 ax-mulcl 11173 ax-mulrcl 11174 ax-mulcom 11175 ax-addass 11176 ax-mulass 11177 ax-distr 11178 ax-i2m1 11179 ax-1ne0 11180 ax-1rid 11181 ax-rnegex 11182 ax-rrecex 11183 ax-cnre 11184 ax-pre-lttri 11185 ax-pre-lttrn 11186 ax-pre-ltadd 11187 ax-pre-mulgt0 11188 ax-pre-sup 11189 ax-addf 11190 ax-mulf 11191 |
| 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 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-nel 3067 df-ral 3082 df-rex 3092 df-rmo 3371 df-reu 3372 df-rab 3419 df-v 3459 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4287 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-tp 4596 df-op 4598 df-uni 4875 df-iun 4960 df-br 5112 df-opab 5176 df-mpt 5195 df-tr 5221 df-id 5558 df-eprel 5563 df-po 5571 df-so 5572 df-fr 5616 df-we 5618 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-pred 6306 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6496 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-riota 7373 df-ov 7419 df-oprab 7420 df-mpo 7421 df-om 7865 df-1st 7988 df-2nd 7989 df-tpos 8224 df-frecs 8280 df-wrecs 8311 df-recs 8360 df-rdg 8399 df-1o 8455 df-er 8696 df-map 8828 df-en 8946 df-dom 8947 df-sdom 8948 df-fin 8949 df-sup 9405 df-pnf 11256 df-mnf 11257 df-xr 11258 df-ltxr 11259 df-le 11260 df-sub 11454 df-neg 11455 df-div 11883 df-nn 12245 df-2 12314 df-3 12315 df-4 12316 df-5 12317 df-6 12318 df-7 12319 df-8 12320 df-9 12321 df-n0 12516 df-z 12603 df-dec 12724 df-uz 12875 df-rp 13029 df-fz 13548 df-seq 14052 df-exp 14112 df-cj 15170 df-re 15171 df-im 15172 df-sqrt 15306 df-abs 15307 df-struct 17225 df-sets 17242 df-slot 17260 df-ndx 17272 df-base 17288 df-ress 17309 df-plusg 17341 df-mulr 17342 df-starv 17343 df-sca 17344 df-vsca 17345 df-ip 17346 df-tset 17347 df-ple 17348 df-ds 17350 df-unif 17351 df-0g 17512 df-mgm 18716 df-sgrp 18799 df-mnd 18815 df-grp 19027 df-minusg 19028 df-subg 19213 df-ghm 19308 df-cmn 19876 df-abl 19877 df-mgp 20241 df-rng 20255 df-ur 20288 df-ring 20341 df-cring 20342 df-oppr 20445 df-dvdsr 20465 df-unit 20466 df-subrg 20699 df-drng 20859 df-lmhm 21173 df-lvec 21254 df-sra 21324 df-rgmod 21325 df-cnfld 21553 df-phl 21806 df-cph 25358 |
| This theorem is used by: cphnmf 25385 reipcl 25387 ipge0 25388 cphpyth 25406 nmparlem 25429 cphipval2 25431 cphipval 25433 pjthlem1 25627 |
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