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| Mirrors > Home > HSE Home > Th. List > nmfnge0 | Structured version Visualization version GIF version | ||
| Description: The norm of any Hilbert space functional is nonnegative. (Contributed by NM, 24-May-2006.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| nmfnge0 | ⊢ (𝑇: ℋ⟶ℂ → 0 ≤ (normfn‘𝑇)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-hv0cl 31524 | . . . 4 ⊢ 0ℎ ∈ ℋ | |
| 2 | ffvelcdm 7070 | . . . 4 ⊢ ((𝑇: ℋ⟶ℂ ∧ 0ℎ ∈ ℋ) → (𝑇‘0ℎ) ∈ ℂ) | |
| 3 | 1, 2 | mpan2 704 | . . 3 ⊢ (𝑇: ℋ⟶ℂ → (𝑇‘0ℎ) ∈ ℂ) |
| 4 | 3 | absge0d 15567 | . 2 ⊢ (𝑇: ℋ⟶ℂ → 0 ≤ (abs‘(𝑇‘0ℎ))) |
| 5 | norm0 31649 | . . . 4 ⊢ (normℎ‘0ℎ) = 0 | |
| 6 | 0le1 11794 | . . . 4 ⊢ 0 ≤ 1 | |
| 7 | 5, 6 | eqbrtri 5126 | . . 3 ⊢ (normℎ‘0ℎ) ≤ 1 |
| 8 | nmfnlb 32445 | . . 3 ⊢ ((𝑇: ℋ⟶ℂ ∧ 0ℎ ∈ ℋ ∧ (normℎ‘0ℎ) ≤ 1) → (abs‘(𝑇‘0ℎ)) ≤ (normfn‘𝑇)) | |
| 9 | 1, 7, 8 | mp3an23 1482 | . 2 ⊢ (𝑇: ℋ⟶ℂ → (abs‘(𝑇‘0ℎ)) ≤ (normfn‘𝑇)) |
| 10 | 3 | abscld 15559 | . . . 4 ⊢ (𝑇: ℋ⟶ℂ → (abs‘(𝑇‘0ℎ)) ∈ ℝ) |
| 11 | 10 | rexrd 11316 | . . 3 ⊢ (𝑇: ℋ⟶ℂ → (abs‘(𝑇‘0ℎ)) ∈ ℝ*) |
| 12 | nmfnxr 32400 | . . 3 ⊢ (𝑇: ℋ⟶ℂ → (normfn‘𝑇) ∈ ℝ*) | |
| 13 | 0xr 11313 | . . . 4 ⊢ 0 ∈ ℝ* | |
| 14 | xrletr 13242 | . . . 4 ⊢ ((0 ∈ ℝ* ∧ (abs‘(𝑇‘0ℎ)) ∈ ℝ* ∧ (normfn‘𝑇) ∈ ℝ*) → ((0 ≤ (abs‘(𝑇‘0ℎ)) ∧ (abs‘(𝑇‘0ℎ)) ≤ (normfn‘𝑇)) → 0 ≤ (normfn‘𝑇))) | |
| 15 | 13, 14 | mp3an1 1477 | . . 3 ⊢ (((abs‘(𝑇‘0ℎ)) ∈ ℝ* ∧ (normfn‘𝑇) ∈ ℝ*) → ((0 ≤ (abs‘(𝑇‘0ℎ)) ∧ (abs‘(𝑇‘0ℎ)) ≤ (normfn‘𝑇)) → 0 ≤ (normfn‘𝑇))) |
| 16 | 11, 12, 15 | syl2anc 596 | . 2 ⊢ (𝑇: ℋ⟶ℂ → ((0 ≤ (abs‘(𝑇‘0ℎ)) ∧ (abs‘(𝑇‘0ℎ)) ≤ (normfn‘𝑇)) → 0 ≤ (normfn‘𝑇))) |
| 17 | 4, 9, 16 | mp2and 712 | 1 ⊢ (𝑇: ℋ⟶ℂ → 0 ≤ (normfn‘𝑇)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ∈ wcel 2145 class class class wbr 5103 ⟶wf 6524 ‘cfv 6528 ℂcc 11155 0cc0 11157 1c1 11158 ℝ*cxr 11299 ≤ cle 11301 abscabs 15354 ℋchba 31440 normℎcno 31444 0ℎc0v 31445 normfncnmf 31472 |
| 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 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7735 ax-cnex 11213 ax-resscn 11214 ax-1cn 11215 ax-icn 11216 ax-addcl 11217 ax-addrcl 11218 ax-mulcl 11219 ax-mulrcl 11220 ax-mulcom 11221 ax-addass 11222 ax-mulass 11223 ax-distr 11224 ax-i2m1 11225 ax-1ne0 11226 ax-1rid 11227 ax-rnegex 11228 ax-rrecex 11229 ax-cnre 11230 ax-pre-lttri 11231 ax-pre-lttrn 11232 ax-pre-ltadd 11233 ax-pre-mulgt0 11234 ax-pre-sup 11235 ax-hilex 31520 ax-hv0cl 31524 ax-hvmul0 31531 ax-hfi 31600 ax-his3 31605 |
| 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-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5543 df-eprel 5548 df-po 5556 df-so 5557 df-fr 5601 df-we 5603 df-xp 5654 df-rel 5655 df-cnv 5656 df-co 5657 df-dm 5658 df-rn 5659 df-res 5660 df-ima 5661 df-pred 6294 df-ord 6355 df-on 6356 df-lim 6357 df-suc 6358 df-iota 6484 df-fun 6530 df-fn 6531 df-f 6532 df-f1 6533 df-fo 6534 df-f1o 6535 df-fv 6536 df-riota 7366 df-ov 7412 df-oprab 7413 df-mpo 7414 df-om 7862 df-2nd 7986 df-frecs 8278 df-wrecs 8309 df-recs 8358 df-rdg 8397 df-er 8696 df-map 8828 df-en 8953 df-dom 8954 df-sdom 8955 df-sup 9412 df-pnf 11302 df-mnf 11303 df-xr 11304 df-ltxr 11305 df-le 11306 df-sub 11500 df-neg 11501 df-div 11929 df-nn 12291 df-2 12360 df-3 12361 df-n0 12562 df-z 12649 df-uz 12921 df-rp 13076 df-seq 14099 df-exp 14159 df-cj 15219 df-re 15220 df-im 15221 df-sqrt 15355 df-abs 15356 df-hnorm 31489 df-nmfn 32366 |
| This theorem is used by: (None) |
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