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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 11130 | . . 3 ⊢ 0 ∈ ℂ | |
| 2 | 1 | fconst6 6725 | . 2 ⊢ ( ℋ × {0}): ℋ⟶ℂ |
| 3 | 1rp 12940 | . . . 4 ⊢ 1 ∈ ℝ+ | |
| 4 | c0ex 11132 | . . . . . . . . . . . . 13 ⊢ 0 ∈ V | |
| 5 | 4 | fvconst2 7153 | . . . . . . . . . . . 12 ⊢ (𝑤 ∈ ℋ → (( ℋ × {0})‘𝑤) = 0) |
| 6 | 4 | fvconst2 7153 | . . . . . . . . . . . 12 ⊢ (𝑥 ∈ ℋ → (( ℋ × {0})‘𝑥) = 0) |
| 7 | 5, 6 | oveqan12rd 7381 | . . . . . . . . . . 11 ⊢ ((𝑥 ∈ ℋ ∧ 𝑤 ∈ ℋ) → ((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥)) = (0 − 0)) |
| 8 | 7 | adantlr 716 | . . . . . . . . . 10 ⊢ (((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℝ+) ∧ 𝑤 ∈ ℋ) → ((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥)) = (0 − 0)) |
| 9 | 0m0e0 12290 | . . . . . . . . . 10 ⊢ (0 − 0) = 0 | |
| 10 | 8, 9 | eqtrdi 2788 | . . . . . . . . 9 ⊢ (((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℝ+) ∧ 𝑤 ∈ ℋ) → ((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥)) = 0) |
| 11 | 10 | fveq2d 6839 | . . . . . . . 8 ⊢ (((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℝ+) ∧ 𝑤 ∈ ℋ) → (abs‘((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥))) = (abs‘0)) |
| 12 | abs0 15241 | . . . . . . . 8 ⊢ (abs‘0) = 0 | |
| 13 | 11, 12 | eqtrdi 2788 | . . . . . . 7 ⊢ (((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℝ+) ∧ 𝑤 ∈ ℋ) → (abs‘((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥))) = 0) |
| 14 | rpgt0 12949 | . . . . . . . 8 ⊢ (𝑦 ∈ ℝ+ → 0 < 𝑦) | |
| 15 | 14 | ad2antlr 728 | . . . . . . 7 ⊢ (((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℝ+) ∧ 𝑤 ∈ ℋ) → 0 < 𝑦) |
| 16 | 13, 15 | eqbrtrd 5108 | . . . . . 6 ⊢ (((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℝ+) ∧ 𝑤 ∈ ℋ) → (abs‘((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥))) < 𝑦) |
| 17 | 16 | a1d 25 | . . . . 5 ⊢ (((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℝ+) ∧ 𝑤 ∈ ℋ) → ((normℎ‘(𝑤 −ℎ 𝑥)) < 1 → (abs‘((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥))) < 𝑦)) |
| 18 | 17 | ralrimiva 3130 | . . . 4 ⊢ ((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℝ+) → ∀𝑤 ∈ ℋ ((normℎ‘(𝑤 −ℎ 𝑥)) < 1 → (abs‘((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥))) < 𝑦)) |
| 19 | breq2 5090 | . . . . 5 ⊢ (𝑧 = 1 → ((normℎ‘(𝑤 −ℎ 𝑥)) < 𝑧 ↔ (normℎ‘(𝑤 −ℎ 𝑥)) < 1)) | |
| 20 | 19 | rspceaimv 3571 | . . . 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 588 | . . 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 3178 | . 2 ⊢ ∀𝑥 ∈ ℋ ∀𝑦 ∈ ℝ+ ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ ℋ ((normℎ‘(𝑤 −ℎ 𝑥)) < 𝑧 → (abs‘((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥))) < 𝑦) |
| 23 | elcnfn 31971 | . 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 712 | 1 ⊢ ( ℋ × {0}) ∈ ContFn |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1542 ∈ wcel 2114 ∀wral 3052 ∃wrex 3062 {csn 4568 class class class wbr 5086 × cxp 5623 ⟶wf 6489 ‘cfv 6493 (class class class)co 7361 ℂcc 11030 0cc0 11032 1c1 11033 < clt 11173 − cmin 11371 ℝ+crp 12936 abscabs 15190 ℋchba 31008 normℎcno 31012 −ℎ cmv 31014 ContFnccnfn 31042 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5232 ax-nul 5242 ax-pow 5303 ax-pr 5371 ax-un 7683 ax-cnex 11088 ax-resscn 11089 ax-1cn 11090 ax-icn 11091 ax-addcl 11092 ax-addrcl 11093 ax-mulcl 11094 ax-mulrcl 11095 ax-mulcom 11096 ax-addass 11097 ax-mulass 11098 ax-distr 11099 ax-i2m1 11100 ax-1ne0 11101 ax-1rid 11102 ax-rnegex 11103 ax-rrecex 11104 ax-cnre 11105 ax-pre-lttri 11106 ax-pre-lttrn 11107 ax-pre-ltadd 11108 ax-pre-mulgt0 11109 ax-hilex 31088 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-rmo 3343 df-reu 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-iun 4936 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5520 df-eprel 5525 df-po 5533 df-so 5534 df-fr 5578 df-we 5580 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-pred 6260 df-ord 6321 df-on 6322 df-lim 6323 df-suc 6324 df-iota 6449 df-fun 6495 df-fn 6496 df-f 6497 df-f1 6498 df-fo 6499 df-f1o 6500 df-fv 6501 df-riota 7318 df-ov 7364 df-oprab 7365 df-mpo 7366 df-om 7812 df-2nd 7937 df-frecs 8225 df-wrecs 8256 df-recs 8305 df-rdg 8343 df-er 8637 df-map 8769 df-en 8888 df-dom 8889 df-sdom 8890 df-pnf 11175 df-mnf 11176 df-xr 11177 df-ltxr 11178 df-le 11179 df-sub 11373 df-neg 11374 df-div 11802 df-nn 12169 df-2 12238 df-n0 12432 df-z 12519 df-uz 12783 df-rp 12937 df-seq 13958 df-exp 14018 df-cj 15055 df-re 15056 df-im 15057 df-sqrt 15191 df-abs 15192 df-cnfn 31936 |
| This theorem is referenced by: nmcfnex 32142 nmcfnlb 32143 riesz4 32153 riesz1 32154 |
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