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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 3402 | . 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 31060 | . 2 ⊢ Cauchy = {𝑓 ∈ ( ℋ ↑m ℕ) ∣ ∀𝑥 ∈ ℝ+ ∃𝑗 ∈ ℕ ∀𝑘 ∈ (ℤ≥‘𝑗)(normℎ‘((𝑓‘𝑗) −ℎ (𝑓‘𝑘))) < 𝑥} | |
| 3 | elin 3919 | . . . 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 30985 | . . . . . . 7 ⊢ ℋ ∈ V |
| 7 | nnex 12163 | . . . . . . 7 ⊢ ℕ ∈ V | |
| 8 | 6, 7 | elmap 8821 | . . . . . 6 ⊢ (𝑓 ∈ ( ℋ ↑m ℕ) ↔ 𝑓:ℕ⟶ ℋ) |
| 9 | nnuz 12802 | . . . . . . . 8 ⊢ ℕ = (ℤ≥‘1) | |
| 10 | h2hc.2 | . . . . . . . . 9 ⊢ 𝑈 ∈ NrmCVec | |
| 11 | h2hc.4 | . . . . . . . . . 10 ⊢ 𝐷 = (IndMet‘𝑈) | |
| 12 | 5, 11 | imsxmet 30779 | . . . . . . . . 9 ⊢ (𝑈 ∈ NrmCVec → 𝐷 ∈ (∞Met‘ ℋ)) |
| 13 | 10, 12 | mp1i 13 | . . . . . . . 8 ⊢ (𝑓:ℕ⟶ ℋ → 𝐷 ∈ (∞Met‘ ℋ)) |
| 14 | 1zzd 12534 | . . . . . . . 8 ⊢ (𝑓:ℕ⟶ ℋ → 1 ∈ ℤ) | |
| 15 | eqidd 2738 | . . . . . . . 8 ⊢ ((𝑓:ℕ⟶ ℋ ∧ 𝑘 ∈ ℕ) → (𝑓‘𝑘) = (𝑓‘𝑘)) | |
| 16 | eqidd 2738 | . . . . . . . 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 25248 | . . . . . . 7 ⊢ (𝑓:ℕ⟶ ℋ → (𝑓 ∈ (Cau‘𝐷) ↔ ∀𝑥 ∈ ℝ+ ∃𝑗 ∈ ℕ ∀𝑘 ∈ (ℤ≥‘𝑗)((𝑓‘𝑗)𝐷(𝑓‘𝑘)) < 𝑥)) |
| 19 | ffvelcdm 7035 | . . . . . . . . . . . . 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 12843 | . . . . . . . . . . . . . 14 ⊢ ((𝑗 ∈ ℕ ∧ 𝑘 ∈ (ℤ≥‘𝑗)) → 𝑘 ∈ ℕ) | |
| 22 | ffvelcdm 7035 | . . . . . . . . . . . . . 14 ⊢ ((𝑓:ℕ⟶ ℋ ∧ 𝑘 ∈ ℕ) → (𝑓‘𝑘) ∈ ℋ) | |
| 23 | 21, 22 | sylan2 594 | . . . . . . . . . . . . 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 31065 | . . . . . . . . . . . 12 ⊢ (((𝑓‘𝑗) ∈ ℋ ∧ (𝑓‘𝑘) ∈ ℋ) → ((𝑓‘𝑗)𝐷(𝑓‘𝑘)) = (normℎ‘((𝑓‘𝑗) −ℎ (𝑓‘𝑘)))) |
| 27 | 20, 24, 26 | syl2anc 585 | . . . . . . . . . . 11 ⊢ (((𝑓:ℕ⟶ ℋ ∧ 𝑗 ∈ ℕ) ∧ 𝑘 ∈ (ℤ≥‘𝑗)) → ((𝑓‘𝑗)𝐷(𝑓‘𝑘)) = (normℎ‘((𝑓‘𝑗) −ℎ (𝑓‘𝑘)))) |
| 28 | 27 | breq1d 5110 | . . . . . . . . . 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 3159 | . . . . . . . . 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 3160 | . . . . . . . 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 3161 | . . . . . . 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 2872 | . 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 2770 | 1 ⊢ Cauchy = ((Cau‘𝐷) ∩ ( ℋ ↑m ℕ)) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 206 ∧ wa 395 = wceq 1542 ∈ wcel 2114 {cab 2715 ∀wral 3052 ∃wrex 3062 {crab 3401 ∩ cin 3902 〈cop 4588 class class class wbr 5100 ⟶wf 6496 ‘cfv 6500 (class class class)co 7368 ↑m cmap 8775 1c1 11039 < clt 11178 ℕcn 12157 ℤ≥cuz 12763 ℝ+crp 12917 ∞Metcxmet 21306 Cauccau 25221 NrmCVeccnv 30671 BaseSetcba 30673 IndMetcims 30678 ℋchba 31006 +ℎ cva 31007 ·ℎ csm 31008 normℎcno 31010 −ℎ cmv 31012 Cauchyccauold 31013 |
| 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-rep 5226 ax-sep 5243 ax-nul 5253 ax-pow 5312 ax-pr 5379 ax-un 7690 ax-cnex 11094 ax-resscn 11095 ax-1cn 11096 ax-icn 11097 ax-addcl 11098 ax-addrcl 11099 ax-mulcl 11100 ax-mulrcl 11101 ax-mulcom 11102 ax-addass 11103 ax-mulass 11104 ax-distr 11105 ax-i2m1 11106 ax-1ne0 11107 ax-1rid 11108 ax-rnegex 11109 ax-rrecex 11110 ax-cnre 11111 ax-pre-lttri 11112 ax-pre-lttrn 11113 ax-pre-ltadd 11114 ax-pre-mulgt0 11115 ax-pre-sup 11116 ax-addf 11117 ax-mulf 11118 |
| 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 3352 df-reu 3353 df-rab 3402 df-v 3444 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-pss 3923 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-iun 4950 df-br 5101 df-opab 5163 df-mpt 5182 df-tr 5208 df-id 5527 df-eprel 5532 df-po 5540 df-so 5541 df-fr 5585 df-we 5587 df-xp 5638 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-rn 5643 df-res 5644 df-ima 5645 df-pred 6267 df-ord 6328 df-on 6329 df-lim 6330 df-suc 6331 df-iota 6456 df-fun 6502 df-fn 6503 df-f 6504 df-f1 6505 df-fo 6506 df-f1o 6507 df-fv 6508 df-riota 7325 df-ov 7371 df-oprab 7372 df-mpo 7373 df-om 7819 df-1st 7943 df-2nd 7944 df-frecs 8233 df-wrecs 8264 df-recs 8313 df-rdg 8351 df-er 8645 df-map 8777 df-pm 8778 df-en 8896 df-dom 8897 df-sdom 8898 df-sup 9357 df-pnf 11180 df-mnf 11181 df-xr 11182 df-ltxr 11183 df-le 11184 df-sub 11378 df-neg 11379 df-div 11807 df-nn 12158 df-2 12220 df-3 12221 df-n0 12414 df-z 12501 df-uz 12764 df-rp 12918 df-xneg 13038 df-xadd 13039 df-seq 13937 df-exp 13997 df-cj 15034 df-re 15035 df-im 15036 df-sqrt 15170 df-abs 15171 df-psmet 21313 df-xmet 21314 df-met 21315 df-bl 21316 df-cau 25224 df-grpo 30580 df-gid 30581 df-ginv 30582 df-gdiv 30583 df-ablo 30632 df-vc 30646 df-nv 30679 df-va 30682 df-ba 30683 df-sm 30684 df-0v 30685 df-vs 30686 df-nmcv 30687 df-ims 30688 df-hvsub 31058 df-hcau 31060 |
| This theorem is referenced by: axhcompl-zf 31085 hhcau 31285 |
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