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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 11171 | . . 3 ⊢ 0 ∈ ℂ | |
| 2 | 1 | fconst6 6754 | . 2 ⊢ ( ℋ × {0}): ℋ⟶ℂ |
| 3 | 1rp 12997 | . . . 4 ⊢ 1 ∈ ℝ+ | |
| 4 | c0ex 11173 | . . . . . . . . . . . . 13 ⊢ 0 ∈ V | |
| 5 | 4 | fvconst2 7188 | . . . . . . . . . . . 12 ⊢ (𝑤 ∈ ℋ → (( ℋ × {0})‘𝑤) = 0) |
| 6 | 4 | fvconst2 7188 | . . . . . . . . . . . 12 ⊢ (𝑥 ∈ ℋ → (( ℋ × {0})‘𝑥) = 0) |
| 7 | 5, 6 | oveqan12rd 7416 | . . . . . . . . . . 11 ⊢ ((𝑥 ∈ ℋ ∧ 𝑤 ∈ ℋ) → ((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥)) = (0 − 0)) |
| 8 | 7 | adantlr 725 | . . . . . . . . . 10 ⊢ (((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℝ+) ∧ 𝑤 ∈ ℋ) → ((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥)) = (0 − 0)) |
| 9 | 0m0e0 12336 | . . . . . . . . . 10 ⊢ (0 − 0) = 0 | |
| 10 | 8, 9 | eqtrdi 2813 | . . . . . . . . 9 ⊢ (((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℝ+) ∧ 𝑤 ∈ ℋ) → ((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥)) = 0) |
| 11 | 10 | fveq2d 6871 | . . . . . . . 8 ⊢ (((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℝ+) ∧ 𝑤 ∈ ℋ) → (abs‘((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥))) = (abs‘0)) |
| 12 | abs0 15312 | . . . . . . . 8 ⊢ (abs‘0) = 0 | |
| 13 | 11, 12 | eqtrdi 2813 | . . . . . . 7 ⊢ (((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℝ+) ∧ 𝑤 ∈ ℋ) → (abs‘((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥))) = 0) |
| 14 | rpgt0 13006 | . . . . . . . 8 ⊢ (𝑦 ∈ ℝ+ → 0 < 𝑦) | |
| 15 | 14 | ad2antlr 737 | . . . . . . 7 ⊢ (((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℝ+) ∧ 𝑤 ∈ ℋ) → 0 < 𝑦) |
| 16 | 13, 15 | eqbrtrd 5122 | . . . . . 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 3154 | . . . 4 ⊢ ((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℝ+) → ∀𝑤 ∈ ℋ ((normℎ‘(𝑤 −ℎ 𝑥)) < 1 → (abs‘((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥))) < 𝑦)) |
| 19 | breq2 5104 | . . . . 5 ⊢ (𝑧 = 1 → ((normℎ‘(𝑤 −ℎ 𝑥)) < 𝑧 ↔ (normℎ‘(𝑤 −ℎ 𝑥)) < 1)) | |
| 20 | 19 | rspceaimv 3587 | . . . 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 596 | . . 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 3202 | . 2 ⊢ ∀𝑥 ∈ ℋ ∀𝑦 ∈ ℝ+ ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ ℋ ((normℎ‘(𝑤 −ℎ 𝑥)) < 𝑧 → (abs‘((( ℋ × {0})‘𝑤) − (( ℋ × {0})‘𝑥))) < 𝑦) |
| 23 | elcnfn 32085 | . 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 721 | 1 ⊢ ( ℋ × {0}) ∈ ContFn |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 399 = wceq 1560 ∈ wcel 2142 ∀wral 3076 ∃wrex 3086 {csn 4582 class class class wbr 5100 × cxp 5645 ⟶wf 6517 ‘cfv 6521 (class class class)co 7396 ℂcc 11071 0cc0 11073 1c1 11074 < clt 11216 − cmin 11414 ℝ+crp 12993 abscabs 15261 ℋchba 31122 normℎcno 31126 −ℎ cmv 31128 ContFnccnfn 31156 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1815 ax-4 1829 ax-5 1930 ax-6 1987 ax-7 2028 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-sep 5246 ax-nul 5256 ax-pow 5322 ax-pr 5390 ax-un 7718 ax-cnex 11129 ax-resscn 11130 ax-1cn 11131 ax-icn 11132 ax-addcl 11133 ax-addrcl 11134 ax-mulcl 11135 ax-mulrcl 11136 ax-mulcom 11137 ax-addass 11138 ax-mulass 11139 ax-distr 11140 ax-i2m1 11141 ax-1ne0 11142 ax-1rid 11143 ax-rnegex 11144 ax-rrecex 11145 ax-cnre 11146 ax-pre-lttri 11147 ax-pre-lttrn 11148 ax-pre-ltadd 11149 ax-pre-mulgt0 11150 ax-hilex 31202 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1099 df-3an 1100 df-tru 1563 df-fal 1573 df-ex 1800 df-nf 1804 df-sb 2091 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3367 df-reu 3368 df-rab 3415 df-v 3456 df-sbc 3745 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4481 df-pw 4557 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-iun 4951 df-br 5101 df-opab 5163 df-mpt 5182 df-tr 5208 df-id 5542 df-eprel 5547 df-po 5555 df-so 5556 df-fr 5600 df-we 5602 df-xp 5653 df-rel 5654 df-cnv 5655 df-co 5656 df-dm 5657 df-rn 5658 df-res 5659 df-ima 5660 df-pred 6288 df-ord 6349 df-on 6350 df-lim 6351 df-suc 6352 df-iota 6477 df-fun 6523 df-fn 6524 df-f 6525 df-f1 6526 df-fo 6527 df-f1o 6528 df-fv 6529 df-riota 7353 df-ov 7399 df-oprab 7400 df-mpo 7401 df-om 7847 df-2nd 7971 df-frecs 8262 df-wrecs 8293 df-recs 8342 df-rdg 8381 df-er 8678 df-map 8810 df-en 8928 df-dom 8929 df-sdom 8930 df-pnf 11218 df-mnf 11219 df-xr 11220 df-ltxr 11221 df-le 11222 df-sub 11416 df-neg 11417 df-div 11845 df-nn 12211 df-2 12280 df-n0 12482 df-z 12569 df-uz 12840 df-rp 12994 df-seq 14015 df-exp 14075 df-cj 15126 df-re 15127 df-im 15128 df-sqrt 15262 df-abs 15263 df-cnfn 32050 |
| This theorem is referenced by: nmcfnex 32256 nmcfnlb 32257 riesz4 32267 riesz1 32268 |
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