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| Mirrors > Home > HSE Home > Th. List > 0cnfn | Structured version Visualization version GIF version | ||
| Description: The identically zero function is a continuous Hilbert space functional. (Contributed by NM, 7-Feb-2006.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| 0cnfn | ⊢ ( ℋ × {0}) ∈ ContFn |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 0cn 11198 | . . 3 ⊢ 0 ∈ ℂ | |
| 2 | 1 | fconst6 6769 | . 2 ⊢ ( ℋ × {0}): ℋ⟶ℂ |
| 3 | 1rp 13020 | . . . 4 ⊢ 1 ∈ ℝ+ | |
| 4 | c0ex 11200 | . . . . . . . . . . . . 13 ⊢ 0 ∈ V | |
| 5 | 4 | fvconst2 7203 | . . . . . . . . . . . 12 ⊢ (𝑤 ∈ ℋ → (( ℋ × {0})‘𝑤) = 0) |
| 6 | 4 | fvconst2 7203 | . . . . . . . . . . . 12 ⊢ (𝑥 ∈ ℋ → (( ℋ × {0})‘𝑥) = 0) |
| 7 | 5, 6 | oveqan12rd 7431 | . . . . . . . . . . 11 ⊢ ((𝑥 ∈ ℋ ∧ 𝑤 ∈ ℋ) → ((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥)) = (0 − 0)) |
| 8 | 7 | adantlr 727 | . . . . . . . . . 10 ⊢ (((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℝ+) ∧ 𝑤 ∈ ℋ) → ((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥)) = (0 − 0)) |
| 9 | 0m0e0 12359 | . . . . . . . . . 10 ⊢ (0 − 0) = 0 | |
| 10 | 8, 9 | eqtrdi 2820 | . . . . . . . . 9 ⊢ (((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℝ+) ∧ 𝑤 ∈ ℋ) → ((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥)) = 0) |
| 11 | 10 | fveq2d 6886 | . . . . . . . 8 ⊢ (((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℝ+) ∧ 𝑤 ∈ ℋ) → (abs‘((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥))) = (abs‘0)) |
| 12 | abs0 15336 | . . . . . . . 8 ⊢ (abs‘0) = 0 | |
| 13 | 11, 12 | eqtrdi 2820 | . . . . . . 7 ⊢ (((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℝ+) ∧ 𝑤 ∈ ℋ) → (abs‘((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥))) = 0) |
| 14 | rpgt0 13029 | . . . . . . . 8 ⊢ (𝑦 ∈ ℝ+ → 0 < 𝑦) | |
| 15 | 14 | ad2antlr 739 | . . . . . . 7 ⊢ (((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℝ+) ∧ 𝑤 ∈ ℋ) → 0 < 𝑦) |
| 16 | 13, 15 | eqbrtrd 5137 | . . . . . 6 ⊢ (((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℝ+) ∧ 𝑤 ∈ ℋ) → (abs‘((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥))) < 𝑦) |
| 17 | 16 | a1d 26 | . . . . 5 ⊢ (((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℝ+) ∧ 𝑤 ∈ ℋ) → ((normℎ‘(𝑤 −ℎ 𝑥)) < 1 → (abs‘((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥))) < 𝑦)) |
| 18 | 17 | ralrimiva 3163 | . . . 4 ⊢ ((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℝ+) → ∀𝑤 ∈ ℋ ((normℎ‘(𝑤 −ℎ 𝑥)) < 1 → (abs‘((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥))) < 𝑦)) |
| 19 | breq2 5117 | . . . . 5 ⊢ (𝑧 = 1 → ((normℎ‘(𝑤 −ℎ 𝑥)) < 𝑧 ↔ (normℎ‘(𝑤 −ℎ 𝑥)) < 1)) | |
| 20 | 19 | rspceaimv 3596 | . . . 4 ⊢ ((1 ∈ ℝ+ ∧ ∀𝑤 ∈ ℋ ((normℎ‘(𝑤 −ℎ 𝑥)) < 1 → (abs‘((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥))) < 𝑦)) → ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ ℋ ((normℎ‘(𝑤 −ℎ 𝑥)) < 𝑧 → (abs‘((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥))) < 𝑦)) |
| 21 | 3, 18, 20 | sylancr 598 | . . 3 ⊢ ((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℝ+) → ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ ℋ ((normℎ‘(𝑤 −ℎ 𝑥)) < 𝑧 → (abs‘((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥))) < 𝑦)) |
| 22 | 21 | rgen2 3211 | . 2 ⊢ ∀𝑥 ∈ ℋ ∀𝑦 ∈ ℝ+ ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ ℋ ((normℎ‘(𝑤 −ℎ 𝑥)) < 𝑧 → (abs‘((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥))) < 𝑦) |
| 23 | elcnfn 32175 | . 2 ⊢ (( ℋ × {0}) ∈ ContFn ↔ (( ℋ × {0}): ℋ⟶ℂ ∧ ∀𝑥 ∈ ℋ ∀𝑦 ∈ ℝ+ ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ ℋ ((normℎ‘(𝑤 −ℎ 𝑥)) < 𝑧 → (abs‘((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥))) < 𝑦))) | |
| 24 | 2, 22, 23 | mpbir2an 723 | 1 ⊢ ( ℋ × {0}) ∈ ContFn |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 400 = wceq 1567 ∈ wcel 2149 ∀wral 3085 ∃wrex 3095 {csn 4594 class class class wbr 5113 × cxp 5660 ⟶wf 6533 ‘cfv 6537 (class class class)co 7411 ℂcc 11098 0cc0 11100 1c1 11101 < clt 11243 − cmin 11441 ℝ+crp 13016 abscabs 15285 ℋchba 31212 normℎcno 31216 −ℎ cmv 31218 ContFnccnfn 31246 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-sep 5261 ax-nul 5271 ax-pow 5337 ax-pr 5405 ax-un 7733 ax-cnex 11156 ax-resscn 11157 ax-1cn 11158 ax-icn 11159 ax-addcl 11160 ax-addrcl 11161 ax-mulcl 11162 ax-mulrcl 11163 ax-mulcom 11164 ax-addass 11165 ax-mulass 11166 ax-distr 11167 ax-i2m1 11168 ax-1ne0 11169 ax-1rid 11170 ax-rnegex 11171 ax-rrecex 11172 ax-cnre 11173 ax-pre-lttri 11174 ax-pre-lttrn 11175 ax-pre-ltadd 11176 ax-pre-mulgt0 11177 ax-hilex 31292 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-nel 3071 df-ral 3086 df-rex 3096 df-rmo 3376 df-reu 3377 df-rab 3424 df-v 3465 df-sbc 3754 df-csb 3862 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-pss 3933 df-nul 4295 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4877 df-iun 4962 df-br 5114 df-opab 5178 df-mpt 5197 df-tr 5223 df-id 5557 df-eprel 5562 df-po 5570 df-so 5571 df-fr 5615 df-we 5617 df-xp 5668 df-rel 5669 df-cnv 5670 df-co 5671 df-dm 5672 df-rn 5673 df-res 5674 df-ima 5675 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 7368 df-ov 7414 df-oprab 7415 df-mpo 7416 df-om 7863 df-2nd 7987 df-frecs 8278 df-wrecs 8309 df-recs 8358 df-rdg 8397 df-er 8694 df-map 8826 df-en 8944 df-dom 8945 df-sdom 8946 df-pnf 11245 df-mnf 11246 df-xr 11247 df-ltxr 11248 df-le 11249 df-sub 11443 df-neg 11444 df-div 11872 df-nn 12234 df-2 12303 df-n0 12505 df-z 12592 df-uz 12863 df-rp 13017 df-seq 14038 df-exp 14098 df-cj 15150 df-re 15151 df-im 15152 df-sqrt 15286 df-abs 15287 df-cnfn 32140 |
| This theorem is referenced by: nmcfnex 32346 nmcfnlb 32347 riesz4 32357 riesz1 32358 |
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