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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 31468 | . . . 4 ⊢ 0ℎ ∈ ℋ | |
| 2 | ffvelcdm 7077 | . . . 4 ⊢ ((𝑇: ℋ⟶ℂ ∧ 0ℎ ∈ ℋ) → (𝑇‘0ℎ) ∈ ℂ) | |
| 3 | 1, 2 | mpan2 704 | . . 3 ⊢ (𝑇: ℋ⟶ℂ → (𝑇‘0ℎ) ∈ ℂ) |
| 4 | 3 | absge0d 15534 | . 2 ⊢ (𝑇: ℋ⟶ℂ → 0 ≤ (abs‘(𝑇‘0ℎ))) |
| 5 | norm0 31593 | . . . 4 ⊢ (normℎ‘0ℎ) = 0 | |
| 6 | 0le1 11762 | . . . 4 ⊢ 0 ≤ 1 | |
| 7 | 5, 6 | eqbrtri 5130 | . . 3 ⊢ (normℎ‘0ℎ) ≤ 1 |
| 8 | nmfnlb 32389 | . . 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 15526 | . . . 4 ⊢ (𝑇: ℋ⟶ℂ → (abs‘(𝑇‘0ℎ)) ∈ ℝ) |
| 11 | 10 | rexrd 11284 | . . 3 ⊢ (𝑇: ℋ⟶ℂ → (abs‘(𝑇‘0ℎ)) ∈ ℝ*) |
| 12 | nmfnxr 32344 | . . 3 ⊢ (𝑇: ℋ⟶ℂ → (normfn‘𝑇) ∈ ℝ*) | |
| 13 | 0xr 11281 | . . . 4 ⊢ 0 ∈ ℝ* | |
| 14 | xrletr 13209 | . . . 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 5107 ⟶wf 6533 ‘cfv 6537 ℂcc 11123 0cc0 11125 1c1 11126 ℝ*cxr 11267 ≤ cle 11269 abscabs 15321 ℋchba 31384 normℎcno 31388 0ℎc0v 31389 normfncnmf 31416 |
| 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 2215 ax-ext 2734 ax-sep 5255 ax-nul 5267 ax-pow 5334 ax-pr 5402 ax-un 7739 ax-cnex 11181 ax-resscn 11182 ax-1cn 11183 ax-icn 11184 ax-addcl 11185 ax-addrcl 11186 ax-mulcl 11187 ax-mulrcl 11188 ax-mulcom 11189 ax-addass 11190 ax-mulass 11191 ax-distr 11192 ax-i2m1 11193 ax-1ne0 11194 ax-1rid 11195 ax-rnegex 11196 ax-rrecex 11197 ax-cnre 11198 ax-pre-lttri 11199 ax-pre-lttrn 11200 ax-pre-ltadd 11201 ax-pre-mulgt0 11202 ax-pre-sup 11203 ax-hilex 31464 ax-hv0cl 31468 ax-hvmul0 31475 ax-hfi 31544 ax-his3 31549 |
| 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 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3064 df-ral 3079 df-rex 3089 df-rmo 3367 df-reu 3368 df-rab 3415 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4283 df-if 4486 df-pw 4562 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-iun 4956 df-br 5108 df-opab 5172 df-mpt 5191 df-tr 5217 df-id 5554 df-eprel 5559 df-po 5567 df-so 5568 df-fr 5612 df-we 5614 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-pred 6303 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7373 df-ov 7419 df-oprab 7420 df-mpo 7421 df-om 7866 df-2nd 7990 df-frecs 8283 df-wrecs 8314 df-recs 8363 df-rdg 8402 df-er 8699 df-map 8831 df-en 8956 df-dom 8957 df-sdom 8958 df-sup 9415 df-pnf 11270 df-mnf 11271 df-xr 11272 df-ltxr 11273 df-le 11274 df-sub 11468 df-neg 11469 df-div 11897 df-nn 12259 df-2 12328 df-3 12329 df-n0 12530 df-z 12617 df-uz 12889 df-rp 13043 df-seq 14066 df-exp 14126 df-cj 15186 df-re 15187 df-im 15188 df-sqrt 15322 df-abs 15323 df-hnorm 31433 df-nmfn 32310 |
| This theorem is used by: (None) |
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