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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 11127 | . . 3 ⊢ 0 ∈ ℂ | |
| 2 | 1 | fconst6 6717 | . 2 ⊢ ( ℋ × {0}): ℋ⟶ℂ |
| 3 | 1rp 12937 | . . . 4 ⊢ 1 ∈ ℝ+ | |
| 4 | c0ex 11129 | . . . . . . . . . . . . 13 ⊢ 0 ∈ V | |
| 5 | 4 | fvconst2 7148 | . . . . . . . . . . . 12 ⊢ (𝑤 ∈ ℋ → (( ℋ × {0})‘𝑤) = 0) |
| 6 | 4 | fvconst2 7148 | . . . . . . . . . . . 12 ⊢ (𝑥 ∈ ℋ → (( ℋ × {0})‘𝑥) = 0) |
| 7 | 5, 6 | oveqan12rd 7376 | . . . . . . . . . . 11 ⊢ ((𝑥 ∈ ℋ ∧ 𝑤 ∈ ℋ) → ((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥)) = (0 − 0)) |
| 8 | 7 | adantlr 721 | . . . . . . . . . 10 ⊢ (((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℝ+) ∧ 𝑤 ∈ ℋ) → ((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥)) = (0 − 0)) |
| 9 | 0m0e0 12287 | . . . . . . . . . 10 ⊢ (0 − 0) = 0 | |
| 10 | 8, 9 | eqtrdi 2790 | . . . . . . . . 9 ⊢ (((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℝ+) ∧ 𝑤 ∈ ℋ) → ((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥)) = 0) |
| 11 | 10 | fveq2d 6831 | . . . . . . . 8 ⊢ (((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℝ+) ∧ 𝑤 ∈ ℋ) → (abs‘((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥))) = (abs‘0)) |
| 12 | abs0 15238 | . . . . . . . 8 ⊢ (abs‘0) = 0 | |
| 13 | 11, 12 | eqtrdi 2790 | . . . . . . 7 ⊢ (((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℝ+) ∧ 𝑤 ∈ ℋ) → (abs‘((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥))) = 0) |
| 14 | rpgt0 12946 | . . . . . . . 8 ⊢ (𝑦 ∈ ℝ+ → 0 < 𝑦) | |
| 15 | 14 | ad2antlr 733 | . . . . . . 7 ⊢ (((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℝ+) ∧ 𝑤 ∈ ℋ) → 0 < 𝑦) |
| 16 | 13, 15 | eqbrtrd 5094 | . . . . . 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 3131 | . . . 4 ⊢ ((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℝ+) → ∀𝑤 ∈ ℋ ((normℎ‘(𝑤 −ℎ 𝑥)) < 1 → (abs‘((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥))) < 𝑦)) |
| 19 | breq2 5076 | . . . . 5 ⊢ (𝑧 = 1 → ((normℎ‘(𝑤 −ℎ 𝑥)) < 𝑧 ↔ (normℎ‘(𝑤 −ℎ 𝑥)) < 1)) | |
| 20 | 19 | rspceaimv 3566 | . . . 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 593 | . . 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 3179 | . 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 717 | 1 ⊢ ( ℋ × {0}) ∈ ContFn |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 396 = wceq 1547 ∈ wcel 2119 ∀wral 3053 ∃wrex 3063 {csn 4555 class class class wbr 5072 × cxp 5616 ⟶wf 6481 ‘cfv 6485 (class class class)co 7356 ℂcc 11027 0cc0 11029 1c1 11030 < clt 11170 − cmin 11368 ℝ+crp 12933 abscabs 15187 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 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2711 ax-sep 5218 ax-nul 5228 ax-pow 5294 ax-pr 5362 ax-un 7678 ax-cnex 11085 ax-resscn 11086 ax-1cn 11087 ax-icn 11088 ax-addcl 11089 ax-addrcl 11090 ax-mulcl 11091 ax-mulrcl 11092 ax-mulcom 11093 ax-addass 11094 ax-mulass 11095 ax-distr 11096 ax-i2m1 11097 ax-1ne0 11098 ax-1rid 11099 ax-rnegex 11100 ax-rrecex 11101 ax-cnre 11102 ax-pre-lttri 11103 ax-pre-lttrn 11104 ax-pre-ltadd 11105 ax-pre-mulgt0 11106 ax-hilex 31088 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3or 1093 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2718 df-cleq 2731 df-clel 2814 df-nfc 2888 df-ne 2935 df-nel 3039 df-ral 3054 df-rex 3064 df-rmo 3344 df-reu 3345 df-rab 3392 df-v 3433 df-sbc 3724 df-csb 3832 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3903 df-nul 4262 df-if 4455 df-pw 4531 df-sn 4556 df-pr 4558 df-op 4562 df-uni 4839 df-iun 4923 df-br 5073 df-opab 5135 df-mpt 5154 df-tr 5180 df-id 5513 df-eprel 5518 df-po 5526 df-so 5527 df-fr 5571 df-we 5573 df-xp 5624 df-rel 5625 df-cnv 5626 df-co 5627 df-dm 5628 df-rn 5629 df-res 5630 df-ima 5631 df-pred 6252 df-ord 6313 df-on 6314 df-lim 6315 df-suc 6316 df-iota 6441 df-fun 6487 df-fn 6488 df-f 6489 df-f1 6490 df-fo 6491 df-f1o 6492 df-fv 6493 df-riota 7313 df-ov 7359 df-oprab 7360 df-mpo 7361 df-om 7807 df-2nd 7932 df-frecs 8221 df-wrecs 8252 df-recs 8301 df-rdg 8339 df-er 8633 df-map 8765 df-en 8884 df-dom 8885 df-sdom 8886 df-pnf 11172 df-mnf 11173 df-xr 11174 df-ltxr 11175 df-le 11176 df-sub 11370 df-neg 11371 df-div 11799 df-nn 12166 df-2 12235 df-n0 12429 df-z 12516 df-uz 12780 df-rp 12934 df-seq 13955 df-exp 14015 df-cj 15052 df-re 15053 df-im 15054 df-sqrt 15188 df-abs 15189 df-cnfn 31936 |
| This theorem is referenced by: nmcfnex 32142 nmcfnlb 32143 riesz4 32153 riesz1 32154 |
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