| Hilbert Space Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 3415 | . 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 31455 | . 2 ⊢ Cauchy = {𝑓 ∈ ( ℋ ↑m ℕ) ∣ ∀𝑥 ∈ ℝ+ ∃𝑗 ∈ ℕ ∀𝑘 ∈ (ℤ≥‘𝑗)(normℎ‘((𝑓‘𝑗) −ℎ (𝑓‘𝑘))) < 𝑥} | |
| 3 | elin 3918 | . . . 4 ⊢ (𝑓 ∈ ((Cau‘𝐷) ∩ ( ℋ ↑m ℕ)) ↔ (𝑓 ∈ (Cau‘𝐷) ∧ 𝑓 ∈ ( ℋ ↑m ℕ))) | |
| 4 | ancom 466 | . . . 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 31380 | . . . . . . 7 ⊢ ℋ ∈ V |
| 7 | nnex 12266 | . . . . . . 7 ⊢ ℕ ∈ V | |
| 8 | 6, 7 | elmap 8881 | . . . . . 6 ⊢ (𝑓 ∈ ( ℋ ↑m ℕ) ↔ 𝑓:ℕ⟶ ℋ) |
| 9 | nnuz 12929 | . . . . . . . 8 ⊢ ℕ = (ℤ≥‘1) | |
| 10 | h2hc.2 | . . . . . . . . 9 ⊢ 𝑈 ∈ NrmCVec | |
| 11 | h2hc.4 | . . . . . . . . . 10 ⊢ 𝐷 = (IndMet‘𝑈) | |
| 12 | 5, 11 | imsxmet 31174 | . . . . . . . . 9 ⊢ (𝑈 ∈ NrmCVec → 𝐷 ∈ (∞Met‘ ℋ)) |
| 13 | 10, 12 | mp1i 14 | . . . . . . . 8 ⊢ (𝑓:ℕ⟶ ℋ → 𝐷 ∈ (∞Met‘ ℋ)) |
| 14 | 1zzd 12652 | . . . . . . . 8 ⊢ (𝑓:ℕ⟶ ℋ → 1 ∈ ℤ) | |
| 15 | eqidd 2763 | . . . . . . . 8 ⊢ ((𝑓:ℕ⟶ ℋ ∧ 𝑘 ∈ ℕ) → (𝑓‘𝑘) = (𝑓‘𝑘)) | |
| 16 | eqidd 2763 | . . . . . . . 8 ⊢ ((𝑓:ℕ⟶ ℋ ∧ 𝑗 ∈ ℕ) → (𝑓‘𝑗) = (𝑓‘𝑗)) | |
| 17 | id 23 | . . . . . . . 8 ⊢ (𝑓:ℕ⟶ ℋ → 𝑓:ℕ⟶ ℋ) | |
| 18 | 9, 13, 14, 15, 16, 17 | iscauf 25512 | . . . . . . 7 ⊢ (𝑓:ℕ⟶ ℋ → (𝑓 ∈ (Cau‘𝐷) ↔ ∀𝑥 ∈ ℝ+ ∃𝑗 ∈ ℕ ∀𝑘 ∈ (ℤ≥‘𝑗)((𝑓‘𝑗)𝐷(𝑓‘𝑘)) < 𝑥)) |
| 19 | ffvelcdm 7077 | . . . . . . . . . . . . 13 ⊢ ((𝑓:ℕ⟶ ℋ ∧ 𝑗 ∈ ℕ) → (𝑓‘𝑗) ∈ ℋ) | |
| 20 | 19 | adantr 486 | . . . . . . . . . . . 12 ⊢ (((𝑓:ℕ⟶ ℋ ∧ 𝑗 ∈ ℕ) ∧ 𝑘 ∈ (ℤ≥‘𝑗)) → (𝑓‘𝑗) ∈ ℋ) |
| 21 | eluznn 12970 | . . . . . . . . . . . . . 14 ⊢ ((𝑗 ∈ ℕ ∧ 𝑘 ∈ (ℤ≥‘𝑗)) → 𝑘 ∈ ℕ) | |
| 22 | ffvelcdm 7077 | . . . . . . . . . . . . . 14 ⊢ ((𝑓:ℕ⟶ ℋ ∧ 𝑘 ∈ ℕ) → (𝑓‘𝑘) ∈ ℋ) | |
| 23 | 21, 22 | sylan2 605 | . . . . . . . . . . . . 13 ⊢ ((𝑓:ℕ⟶ ℋ ∧ (𝑗 ∈ ℕ ∧ 𝑘 ∈ (ℤ≥‘𝑗))) → (𝑓‘𝑘) ∈ ℋ) |
| 24 | 23 | anassrs 473 | . . . . . . . . . . . 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 31460 | . . . . . . . . . . . 12 ⊢ (((𝑓‘𝑗) ∈ ℋ ∧ (𝑓‘𝑘) ∈ ℋ) → ((𝑓‘𝑗)𝐷(𝑓‘𝑘)) = (normℎ‘((𝑓‘𝑗) −ℎ (𝑓‘𝑘)))) |
| 27 | 20, 24, 26 | syl2anc 596 | . . . . . . . . . . 11 ⊢ (((𝑓:ℕ⟶ ℋ ∧ 𝑗 ∈ ℕ) ∧ 𝑘 ∈ (ℤ≥‘𝑗)) → ((𝑓‘𝑗)𝐷(𝑓‘𝑘)) = (normℎ‘((𝑓‘𝑗) −ℎ (𝑓‘𝑘)))) |
| 28 | 27 | breq1d 5117 | . . . . . . . . . 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 3185 | . . . . . . . . 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 3186 | . . . . . . . 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 3187 | . . . . . . 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 282 | . . . . . 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 220 | . . . . 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 585 | . . . 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 300 | . . 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 2897 | . 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 2795 | 1 ⊢ Cauchy = ((Cau‘𝐷) ∩ ( ℋ ↑m ℕ)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ↔ wb 209 ∧ wa 401 = wceq 1570 ∈ wcel 2145 {cab 2740 ∀wral 3078 ∃wrex 3088 {crab 3414 ∩ cin 3901 〈cop 4593 class class class wbr 5107 ⟶wf 6533 ‘cfv 6537 (class class class)co 7416 ↑m cmap 8829 1c1 11128 < clt 11270 ℕcn 12260 ℤ≥cuz 12890 ℝ+crp 13044 ∞Metcxmet 21574 Cauccau 25485 NrmCVeccnv 31066 BaseSetcba 31068 IndMetcims 31073 ℋchba 31401 +ℎ cva 31402 ·ℎ csm 31403 normℎcno 31405 −ℎ cmv 31407 Cauchyccauold 31408 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2734 ax-rep 5236 ax-sep 5255 ax-nul 5267 ax-pow 5334 ax-pr 5402 ax-un 7739 ax-cnex 11183 ax-resscn 11184 ax-1cn 11185 ax-icn 11186 ax-addcl 11187 ax-addrcl 11188 ax-mulcl 11189 ax-mulrcl 11190 ax-mulcom 11191 ax-addass 11192 ax-mulass 11193 ax-distr 11194 ax-i2m1 11195 ax-1ne0 11196 ax-1rid 11197 ax-rnegex 11198 ax-rrecex 11199 ax-cnre 11200 ax-pre-lttri 11201 ax-pre-lttrn 11202 ax-pre-ltadd 11203 ax-pre-mulgt0 11204 ax-pre-sup 11205 ax-addf 11206 ax-mulf 11207 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3064 df-ral 3079 df-rex 3089 df-rmo 3367 df-reu 3368 df-rab 3415 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4283 df-if 4486 df-pw 4562 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-iun 4956 df-br 5108 df-opab 5172 df-mpt 5191 df-tr 5217 df-id 5554 df-eprel 5559 df-po 5567 df-so 5568 df-fr 5612 df-we 5614 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-pred 6303 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7373 df-ov 7419 df-oprab 7420 df-mpo 7421 df-om 7866 df-1st 7989 df-2nd 7990 df-frecs 8283 df-wrecs 8314 df-recs 8363 df-rdg 8402 df-er 8699 df-map 8831 df-pm 8832 df-en 8956 df-dom 8957 df-sdom 8958 df-sup 9415 df-pnf 11272 df-mnf 11273 df-xr 11274 df-ltxr 11275 df-le 11276 df-sub 11470 df-neg 11471 df-div 11899 df-nn 12261 df-2 12330 df-3 12331 df-n0 12532 df-z 12619 df-uz 12891 df-rp 13045 df-xneg 13165 df-xadd 13166 df-seq 14068 df-exp 14128 df-cj 15188 df-re 15189 df-im 15190 df-sqrt 15324 df-abs 15325 df-psmet 21581 df-xmet 21582 df-met 21583 df-bl 21584 df-cau 25488 df-grpo 30975 df-gid 30976 df-ginv 30977 df-gdiv 30978 df-ablo 31027 df-vc 31041 df-nv 31074 df-va 31077 df-ba 31078 df-sm 31079 df-0v 31080 df-vs 31081 df-nmcv 31082 df-ims 31083 df-hvsub 31453 df-hcau 31455 |
| This theorem is used by: axhcompl-zf 31480 hhcau 31680 |
| Copyright terms: Public domain | W3C validator |