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| Mirrors > Home > MPE Home > Th. List > ipge0 | Structured version Visualization version GIF version | ||
| Description: The inner product in a subcomplex pre-Hilbert space is positive definite. (Contributed by Mario Carneiro, 7-Oct-2015.) |
| Ref | Expression |
|---|---|
| reipcl.v | ⊢ 𝑉 = (Base‘𝑊) |
| reipcl.h | ⊢ , = (·𝑖‘𝑊) |
| Ref | Expression |
|---|---|
| ipge0 | ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝐴 ∈ 𝑉) → 0 ≤ (𝐴 , 𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cphngp 25369 | . . . 4 ⊢ (𝑊 ∈ ℂPreHil → 𝑊 ∈ NrmGrp) | |
| 2 | reipcl.v | . . . . 5 ⊢ 𝑉 = (Base‘𝑊) | |
| 3 | eqid 2766 | . . . . 5 ⊢ (norm‘𝑊) = (norm‘𝑊) | |
| 4 | 2, 3 | nmcl 24810 | . . . 4 ⊢ ((𝑊 ∈ NrmGrp ∧ 𝐴 ∈ 𝑉) → ((norm‘𝑊)‘𝐴) ∈ ℝ) |
| 5 | 1, 4 | sylan 592 | . . 3 ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝐴 ∈ 𝑉) → ((norm‘𝑊)‘𝐴) ∈ ℝ) |
| 6 | 5 | sqge0d 14193 | . 2 ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝐴 ∈ 𝑉) → 0 ≤ (((norm‘𝑊)‘𝐴)↑2)) |
| 7 | reipcl.h | . . 3 ⊢ , = (·𝑖‘𝑊) | |
| 8 | 2, 7, 3 | nmsq 25390 | . 2 ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝐴 ∈ 𝑉) → (((norm‘𝑊)‘𝐴)↑2) = (𝐴 , 𝐴)) |
| 9 | 6, 8 | breqtrd 5142 | 1 ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝐴 ∈ 𝑉) → 0 ≤ (𝐴 , 𝐴)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2146 class class class wbr 5114 ‘cfv 6543 (class class class)co 7423 ℝcr 11117 0cc0 11118 ≤ cle 11262 2c2 12313 ↑cexp 14117 Basecbs 17294 ·𝑖cip 17340 normcnm 24770 NrmGrpcngp 24771 ℂPreHilccph 25362 |
| 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-pre-sup 11196 ax-addf 11197 ax-mulf 11198 |
| 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-map 8835 df-en 8953 df-dom 8954 df-sdom 8955 df-fin 8956 df-sup 9412 df-inf 9413 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-q 12991 df-rp 13035 df-xneg 13155 df-xadd 13156 df-xmul 13157 df-fz 13554 df-seq 14058 df-exp 14118 df-cj 15176 df-re 15177 df-im 15178 df-sqrt 15312 df-abs 15313 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-sca 17351 df-vsca 17352 df-ip 17353 df-tset 17354 df-ple 17355 df-ds 17357 df-unif 17358 df-0g 17519 df-topgen 17521 df-mgm 18723 df-sgrp 18806 df-mnd 18822 df-grp 19034 df-minusg 19035 df-subg 19220 df-ghm 19315 df-cmn 19883 df-abl 19884 df-mgp 20248 df-rng 20262 df-ur 20295 df-ring 20348 df-cring 20349 df-oppr 20452 df-dvdsr 20472 df-unit 20473 df-subrg 20706 df-drng 20866 df-lmhm 21180 df-lvec 21261 df-sra 21331 df-rgmod 21332 df-psmet 21551 df-xmet 21552 df-met 21553 df-bl 21554 df-mopn 21555 df-cnfld 21560 df-phl 21813 df-top 23088 df-topon 23105 df-topsp 23127 df-bases 23140 df-xms 24514 df-ms 24515 df-nm 24776 df-ngp 24777 df-nlm 24780 df-cph 25364 |
| This theorem is used by: ipcau 25434 pjthlem1 25633 |
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