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| Mirrors > Home > HSE Home > Th. List > h2hcau | Structured version Visualization version GIF version | ||
| Description: The Cauchy sequences of Hilbert space. (Contributed by NM, 6-Jun-2008.) (Revised by Mario Carneiro, 13-May-2014.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| h2hc.1 | ⊢ 𝑈 = 〈〈 +ℎ , ·ℎ 〉, normℎ〉 |
| h2hc.2 | ⊢ 𝑈 ∈ NrmCVec |
| h2hc.3 | ⊢ ℋ = (BaseSet‘𝑈) |
| h2hc.4 | ⊢ 𝐷 = (IndMet‘𝑈) |
| Ref | Expression |
|---|---|
| h2hcau | ⊢ Cauchy = ((Cau‘𝐷) ∩ ( ℋ ↑m ℕ)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-rab 3409 | . 2 ⊢ {𝑓 ∈ ( ℋ ↑m ℕ) ∣ ∀𝑥 ∈ ℝ+ ∃𝑗 ∈ ℕ ∀𝑘 ∈ (ℤ≥‘𝑗)(normℎ‘((𝑓‘𝑗) −ℎ (𝑓‘𝑘))) < 𝑥} = {𝑓 ∣ (𝑓 ∈ ( ℋ ↑m ℕ) ∧ ∀𝑥 ∈ ℝ+ ∃𝑗 ∈ ℕ ∀𝑘 ∈ (ℤ≥‘𝑗)(normℎ‘((𝑓‘𝑗) −ℎ (𝑓‘𝑘))) < 𝑥)} | |
| 2 | df-hcau 30909 | . 2 ⊢ Cauchy = {𝑓 ∈ ( ℋ ↑m ℕ) ∣ ∀𝑥 ∈ ℝ+ ∃𝑗 ∈ ℕ ∀𝑘 ∈ (ℤ≥‘𝑗)(normℎ‘((𝑓‘𝑗) −ℎ (𝑓‘𝑘))) < 𝑥} | |
| 3 | elin 3933 | . . . 4 ⊢ (𝑓 ∈ ((Cau‘𝐷) ∩ ( ℋ ↑m ℕ)) ↔ (𝑓 ∈ (Cau‘𝐷) ∧ 𝑓 ∈ ( ℋ ↑m ℕ))) | |
| 4 | ancom 460 | . . . 4 ⊢ ((𝑓 ∈ (Cau‘𝐷) ∧ 𝑓 ∈ ( ℋ ↑m ℕ)) ↔ (𝑓 ∈ ( ℋ ↑m ℕ) ∧ 𝑓 ∈ (Cau‘𝐷))) | |
| 5 | h2hc.3 | . . . . . . . 8 ⊢ ℋ = (BaseSet‘𝑈) | |
| 6 | 5 | hlex 30834 | . . . . . . 7 ⊢ ℋ ∈ V |
| 7 | nnex 12199 | . . . . . . 7 ⊢ ℕ ∈ V | |
| 8 | 6, 7 | elmap 8847 | . . . . . 6 ⊢ (𝑓 ∈ ( ℋ ↑m ℕ) ↔ 𝑓:ℕ⟶ ℋ) |
| 9 | nnuz 12843 | . . . . . . . 8 ⊢ ℕ = (ℤ≥‘1) | |
| 10 | h2hc.2 | . . . . . . . . 9 ⊢ 𝑈 ∈ NrmCVec | |
| 11 | h2hc.4 | . . . . . . . . . 10 ⊢ 𝐷 = (IndMet‘𝑈) | |
| 12 | 5, 11 | imsxmet 30628 | . . . . . . . . 9 ⊢ (𝑈 ∈ NrmCVec → 𝐷 ∈ (∞Met‘ ℋ)) |
| 13 | 10, 12 | mp1i 13 | . . . . . . . 8 ⊢ (𝑓:ℕ⟶ ℋ → 𝐷 ∈ (∞Met‘ ℋ)) |
| 14 | 1zzd 12571 | . . . . . . . 8 ⊢ (𝑓:ℕ⟶ ℋ → 1 ∈ ℤ) | |
| 15 | eqidd 2731 | . . . . . . . 8 ⊢ ((𝑓:ℕ⟶ ℋ ∧ 𝑘 ∈ ℕ) → (𝑓‘𝑘) = (𝑓‘𝑘)) | |
| 16 | eqidd 2731 | . . . . . . . 8 ⊢ ((𝑓:ℕ⟶ ℋ ∧ 𝑗 ∈ ℕ) → (𝑓‘𝑗) = (𝑓‘𝑗)) | |
| 17 | id 22 | . . . . . . . 8 ⊢ (𝑓:ℕ⟶ ℋ → 𝑓:ℕ⟶ ℋ) | |
| 18 | 9, 13, 14, 15, 16, 17 | iscauf 25187 | . . . . . . 7 ⊢ (𝑓:ℕ⟶ ℋ → (𝑓 ∈ (Cau‘𝐷) ↔ ∀𝑥 ∈ ℝ+ ∃𝑗 ∈ ℕ ∀𝑘 ∈ (ℤ≥‘𝑗)((𝑓‘𝑗)𝐷(𝑓‘𝑘)) < 𝑥)) |
| 19 | ffvelcdm 7056 | . . . . . . . . . . . . 13 ⊢ ((𝑓:ℕ⟶ ℋ ∧ 𝑗 ∈ ℕ) → (𝑓‘𝑗) ∈ ℋ) | |
| 20 | 19 | adantr 480 | . . . . . . . . . . . 12 ⊢ (((𝑓:ℕ⟶ ℋ ∧ 𝑗 ∈ ℕ) ∧ 𝑘 ∈ (ℤ≥‘𝑗)) → (𝑓‘𝑗) ∈ ℋ) |
| 21 | eluznn 12884 | . . . . . . . . . . . . . 14 ⊢ ((𝑗 ∈ ℕ ∧ 𝑘 ∈ (ℤ≥‘𝑗)) → 𝑘 ∈ ℕ) | |
| 22 | ffvelcdm 7056 | . . . . . . . . . . . . . 14 ⊢ ((𝑓:ℕ⟶ ℋ ∧ 𝑘 ∈ ℕ) → (𝑓‘𝑘) ∈ ℋ) | |
| 23 | 21, 22 | sylan2 593 | . . . . . . . . . . . . 13 ⊢ ((𝑓:ℕ⟶ ℋ ∧ (𝑗 ∈ ℕ ∧ 𝑘 ∈ (ℤ≥‘𝑗))) → (𝑓‘𝑘) ∈ ℋ) |
| 24 | 23 | anassrs 467 | . . . . . . . . . . . 12 ⊢ (((𝑓:ℕ⟶ ℋ ∧ 𝑗 ∈ ℕ) ∧ 𝑘 ∈ (ℤ≥‘𝑗)) → (𝑓‘𝑘) ∈ ℋ) |
| 25 | h2hc.1 | . . . . . . . . . . . . 13 ⊢ 𝑈 = 〈〈 +ℎ , ·ℎ 〉, normℎ〉 | |
| 26 | 25, 10, 5, 11 | h2hmetdval 30914 | . . . . . . . . . . . 12 ⊢ (((𝑓‘𝑗) ∈ ℋ ∧ (𝑓‘𝑘) ∈ ℋ) → ((𝑓‘𝑗)𝐷(𝑓‘𝑘)) = (normℎ‘((𝑓‘𝑗) −ℎ (𝑓‘𝑘)))) |
| 27 | 20, 24, 26 | syl2anc 584 | . . . . . . . . . . 11 ⊢ (((𝑓:ℕ⟶ ℋ ∧ 𝑗 ∈ ℕ) ∧ 𝑘 ∈ (ℤ≥‘𝑗)) → ((𝑓‘𝑗)𝐷(𝑓‘𝑘)) = (normℎ‘((𝑓‘𝑗) −ℎ (𝑓‘𝑘)))) |
| 28 | 27 | breq1d 5120 | . . . . . . . . . 10 ⊢ (((𝑓:ℕ⟶ ℋ ∧ 𝑗 ∈ ℕ) ∧ 𝑘 ∈ (ℤ≥‘𝑗)) → (((𝑓‘𝑗)𝐷(𝑓‘𝑘)) < 𝑥 ↔ (normℎ‘((𝑓‘𝑗) −ℎ (𝑓‘𝑘))) < 𝑥)) |
| 29 | 28 | ralbidva 3155 | . . . . . . . . 9 ⊢ ((𝑓:ℕ⟶ ℋ ∧ 𝑗 ∈ ℕ) → (∀𝑘 ∈ (ℤ≥‘𝑗)((𝑓‘𝑗)𝐷(𝑓‘𝑘)) < 𝑥 ↔ ∀𝑘 ∈ (ℤ≥‘𝑗)(normℎ‘((𝑓‘𝑗) −ℎ (𝑓‘𝑘))) < 𝑥)) |
| 30 | 29 | rexbidva 3156 | . . . . . . . 8 ⊢ (𝑓:ℕ⟶ ℋ → (∃𝑗 ∈ ℕ ∀𝑘 ∈ (ℤ≥‘𝑗)((𝑓‘𝑗)𝐷(𝑓‘𝑘)) < 𝑥 ↔ ∃𝑗 ∈ ℕ ∀𝑘 ∈ (ℤ≥‘𝑗)(normℎ‘((𝑓‘𝑗) −ℎ (𝑓‘𝑘))) < 𝑥)) |
| 31 | 30 | ralbidv 3157 | . . . . . . 7 ⊢ (𝑓:ℕ⟶ ℋ → (∀𝑥 ∈ ℝ+ ∃𝑗 ∈ ℕ ∀𝑘 ∈ (ℤ≥‘𝑗)((𝑓‘𝑗)𝐷(𝑓‘𝑘)) < 𝑥 ↔ ∀𝑥 ∈ ℝ+ ∃𝑗 ∈ ℕ ∀𝑘 ∈ (ℤ≥‘𝑗)(normℎ‘((𝑓‘𝑗) −ℎ (𝑓‘𝑘))) < 𝑥)) |
| 32 | 18, 31 | bitrd 279 | . . . . . 6 ⊢ (𝑓:ℕ⟶ ℋ → (𝑓 ∈ (Cau‘𝐷) ↔ ∀𝑥 ∈ ℝ+ ∃𝑗 ∈ ℕ ∀𝑘 ∈ (ℤ≥‘𝑗)(normℎ‘((𝑓‘𝑗) −ℎ (𝑓‘𝑘))) < 𝑥)) |
| 33 | 8, 32 | sylbi 217 | . . . . 5 ⊢ (𝑓 ∈ ( ℋ ↑m ℕ) → (𝑓 ∈ (Cau‘𝐷) ↔ ∀𝑥 ∈ ℝ+ ∃𝑗 ∈ ℕ ∀𝑘 ∈ (ℤ≥‘𝑗)(normℎ‘((𝑓‘𝑗) −ℎ (𝑓‘𝑘))) < 𝑥)) |
| 34 | 33 | pm5.32i 574 | . . . 4 ⊢ ((𝑓 ∈ ( ℋ ↑m ℕ) ∧ 𝑓 ∈ (Cau‘𝐷)) ↔ (𝑓 ∈ ( ℋ ↑m ℕ) ∧ ∀𝑥 ∈ ℝ+ ∃𝑗 ∈ ℕ ∀𝑘 ∈ (ℤ≥‘𝑗)(normℎ‘((𝑓‘𝑗) −ℎ (𝑓‘𝑘))) < 𝑥)) |
| 35 | 3, 4, 34 | 3bitri 297 | . . 3 ⊢ (𝑓 ∈ ((Cau‘𝐷) ∩ ( ℋ ↑m ℕ)) ↔ (𝑓 ∈ ( ℋ ↑m ℕ) ∧ ∀𝑥 ∈ ℝ+ ∃𝑗 ∈ ℕ ∀𝑘 ∈ (ℤ≥‘𝑗)(normℎ‘((𝑓‘𝑗) −ℎ (𝑓‘𝑘))) < 𝑥)) |
| 36 | 35 | eqabi 2864 | . 2 ⊢ ((Cau‘𝐷) ∩ ( ℋ ↑m ℕ)) = {𝑓 ∣ (𝑓 ∈ ( ℋ ↑m ℕ) ∧ ∀𝑥 ∈ ℝ+ ∃𝑗 ∈ ℕ ∀𝑘 ∈ (ℤ≥‘𝑗)(normℎ‘((𝑓‘𝑗) −ℎ (𝑓‘𝑘))) < 𝑥)} |
| 37 | 1, 2, 36 | 3eqtr4i 2763 | 1 ⊢ Cauchy = ((Cau‘𝐷) ∩ ( ℋ ↑m ℕ)) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 206 ∧ wa 395 = wceq 1540 ∈ wcel 2109 {cab 2708 ∀wral 3045 ∃wrex 3054 {crab 3408 ∩ cin 3916 〈cop 4598 class class class wbr 5110 ⟶wf 6510 ‘cfv 6514 (class class class)co 7390 ↑m cmap 8802 1c1 11076 < clt 11215 ℕcn 12193 ℤ≥cuz 12800 ℝ+crp 12958 ∞Metcxmet 21256 Cauccau 25160 NrmCVeccnv 30520 BaseSetcba 30522 IndMetcims 30527 ℋchba 30855 +ℎ cva 30856 ·ℎ csm 30857 normℎcno 30859 −ℎ cmv 30861 Cauchyccauold 30862 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2702 ax-rep 5237 ax-sep 5254 ax-nul 5264 ax-pow 5323 ax-pr 5390 ax-un 7714 ax-cnex 11131 ax-resscn 11132 ax-1cn 11133 ax-icn 11134 ax-addcl 11135 ax-addrcl 11136 ax-mulcl 11137 ax-mulrcl 11138 ax-mulcom 11139 ax-addass 11140 ax-mulass 11141 ax-distr 11142 ax-i2m1 11143 ax-1ne0 11144 ax-1rid 11145 ax-rnegex 11146 ax-rrecex 11147 ax-cnre 11148 ax-pre-lttri 11149 ax-pre-lttrn 11150 ax-pre-ltadd 11151 ax-pre-mulgt0 11152 ax-pre-sup 11153 ax-addf 11154 ax-mulf 11155 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2534 df-eu 2563 df-clab 2709 df-cleq 2722 df-clel 2804 df-nfc 2879 df-ne 2927 df-nel 3031 df-ral 3046 df-rex 3055 df-rmo 3356 df-reu 3357 df-rab 3409 df-v 3452 df-sbc 3757 df-csb 3866 df-dif 3920 df-un 3922 df-in 3924 df-ss 3934 df-pss 3937 df-nul 4300 df-if 4492 df-pw 4568 df-sn 4593 df-pr 4595 df-op 4599 df-uni 4875 df-iun 4960 df-br 5111 df-opab 5173 df-mpt 5192 df-tr 5218 df-id 5536 df-eprel 5541 df-po 5549 df-so 5550 df-fr 5594 df-we 5596 df-xp 5647 df-rel 5648 df-cnv 5649 df-co 5650 df-dm 5651 df-rn 5652 df-res 5653 df-ima 5654 df-pred 6277 df-ord 6338 df-on 6339 df-lim 6340 df-suc 6341 df-iota 6467 df-fun 6516 df-fn 6517 df-f 6518 df-f1 6519 df-fo 6520 df-f1o 6521 df-fv 6522 df-riota 7347 df-ov 7393 df-oprab 7394 df-mpo 7395 df-om 7846 df-1st 7971 df-2nd 7972 df-frecs 8263 df-wrecs 8294 df-recs 8343 df-rdg 8381 df-er 8674 df-map 8804 df-pm 8805 df-en 8922 df-dom 8923 df-sdom 8924 df-sup 9400 df-pnf 11217 df-mnf 11218 df-xr 11219 df-ltxr 11220 df-le 11221 df-sub 11414 df-neg 11415 df-div 11843 df-nn 12194 df-2 12256 df-3 12257 df-n0 12450 df-z 12537 df-uz 12801 df-rp 12959 df-xneg 13079 df-xadd 13080 df-seq 13974 df-exp 14034 df-cj 15072 df-re 15073 df-im 15074 df-sqrt 15208 df-abs 15209 df-psmet 21263 df-xmet 21264 df-met 21265 df-bl 21266 df-cau 25163 df-grpo 30429 df-gid 30430 df-ginv 30431 df-gdiv 30432 df-ablo 30481 df-vc 30495 df-nv 30528 df-va 30531 df-ba 30532 df-sm 30533 df-0v 30534 df-vs 30535 df-nmcv 30536 df-ims 30537 df-hvsub 30907 df-hcau 30909 |
| This theorem is referenced by: axhcompl-zf 30934 hhcau 31134 |
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