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| Description: Part of Lemma 3.6 of [Beran] p. 101. The postulated vector sequence F implies our conclusion. By showing such a sequence exists (which was done with the Axiom of Choice in projlem17 9226), we can show the final conclusion, projlem 9241. |
| Ref | Expression |
|---|---|
| projlem27.1 | ⊢ A ∈ ℋ |
| projlem27.2 | ⊢ H ∈ Cℋ |
| projlem27.3 | ⊢ S = {u ∈ ℝ∣∃v ∈ H u = -(normh ‘(v −h A))} |
| projlem27.4 | ⊢ R = -sup(S, ℝ, < ) |
| projlem27.5 | ⊢ (φ ↔ (F:ℕ–→H ⋀ ∀w ∈ ℕ ((R − (1 / w)) < (normh ‘((F ‘w) −h A)) ⋀ (normh ‘((F ‘w) −h A)) < (R + (1 / w))))) |
| projlem31.6 | ⊢ F ∈ V |
| Ref | Expression |
|---|---|
| projlem31 | ⊢ (φ → ∃x ∈ H ∀y ∈ H (normh ‘(x −h A)) ≤ (normh ‘(y −h A))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | projlem27.1 | . . 3 ⊢ A ∈ ℋ | |
| 2 | projlem27.2 | . . 3 ⊢ H ∈ Cℋ | |
| 3 | projlem27.3 | . . 3 ⊢ S = {u ∈ ℝ∣∃v ∈ H u = -(normh ‘(v −h A))} | |
| 4 | projlem27.4 | . . 3 ⊢ R = -sup(S, ℝ, < ) | |
| 5 | projlem27.5 | . . 3 ⊢ (φ ↔ (F:ℕ–→H ⋀ ∀w ∈ ℕ ((R − (1 / w)) < (normh ‘((F ‘w) −h A)) ⋀ (normh ‘((F ‘w) −h A)) < (R + (1 / w))))) | |
| 6 | 1, 2, 3, 4, 5 | projlem30 9239 | . 2 ⊢ (φ → ∃x ∈ H F ⇝v x) |
| 7 | 1, 2, 3, 4 | projlem11 9220 | . . . . . . . . . 10 ⊢ R ∈ ℝ |
| 8 | 7 | elisseti 1825 | . . . . . . . . 9 ⊢ R ∈ V |
| 9 | fvex 3748 | . . . . . . . . 9 ⊢ (normh ‘(x −h A)) ∈ V | |
| 10 | 8, 9 | climunii 7131 | . . . . . . . 8 ⊢ (({〈z, y〉∣(z ∈ ℕ ⋀ y = (normh ‘((F ‘z) −h A)))} ⇝ R ⋀ {〈z, y〉∣(z ∈ ℕ ⋀ y = (normh ‘((F ‘z) −h A)))} ⇝ (normh ‘(x −h A))) → R = (normh ‘(x −h A))) |
| 11 | eqid 1482 | . . . . . . . . 9 ⊢ {〈z, y〉∣(z ∈ ℕ ⋀ y = (normh ‘((F ‘z) −h A)))} = {〈z, y〉∣(z ∈ ℕ ⋀ y = (normh ‘((F ‘z) −h A)))} | |
| 12 | 1, 2, 3, 4, 5, 11 | projlem26 9235 | . . . . . . . 8 ⊢ (φ → {〈z, y〉∣(z ∈ ℕ ⋀ y = (normh ‘((F ‘z) −h A)))} ⇝ R) |
| 13 | projlem31.6 | . . . . . . . . 9 ⊢ F ∈ V | |
| 14 | 11, 1, 13 | projlem25 9234 | . . . . . . . 8 ⊢ (F ⇝v x → {〈z, y〉∣(z ∈ ℕ ⋀ y = (normh ‘((F ‘z) −h A)))} ⇝ (normh ‘(x −h A))) |
| 15 | 10, 12, 14 | syl2an 457 | . . . . . . 7 ⊢ ((φ ⋀ F ⇝v x) → R = (normh ‘(x −h A))) |
| 16 | 15 | breq1d 2644 | . . . . . 6 ⊢ ((φ ⋀ F ⇝v x) → (R ≤ (normh ‘(y −h A)) ↔ (normh ‘(x −h A)) ≤ (normh ‘(y −h A)))) |
| 17 | 1, 2, 3, 4 | projlem12 9221 | . . . . . 6 ⊢ (y ∈ H → R ≤ (normh ‘(y −h A))) |
| 18 | 16, 17 | syl5bi 208 | . . . . 5 ⊢ ((φ ⋀ F ⇝v x) → (y ∈ H → (normh ‘(x −h A)) ≤ (normh ‘(y −h A)))) |
| 19 | 18 | r19.21aiv 1720 | . . . 4 ⊢ ((φ ⋀ F ⇝v x) → ∀y ∈ H (normh ‘(x −h A)) ≤ (normh ‘(y −h A))) |
| 20 | 19 | ex 373 | . . 3 ⊢ (φ → (F ⇝v x → ∀y ∈ H (normh ‘(x −h A)) ≤ (normh ‘(y −h A)))) |
| 21 | 20 | r19.22sdv 1745 | . 2 ⊢ (φ → (∃x ∈ H F ⇝v x → ∃x ∈ H ∀y ∈ H (normh ‘(x −h A)) ≤ (normh ‘(y −h A)))) |
| 22 | 6, 21 | mpd 26 | 1 ⊢ (φ → ∃x ∈ H ∀y ∈ H (normh ‘(x −h A)) ≤ (normh ‘(y −h A))) |
| Colors of variables: wff set class |
| Syntax hints: → wi 3 ↔ wb 146 ⋀ wa 223 = wceq 960 ∈ wcel 962 ∀wral 1652 ∃wrex 1653 {crab 1655 Vcvv 1818 class class class wbr 2634 {copab 2681 –→wf 3194 ‘cfv 3198 (class class class)co 3979 supcsup 4588 ℝcr 5253 1c1 5255 + caddc 5257 − cmin 5312 -cneg 5313 / cdiv 5314 ≤ cle 5315 ℕcn 5316 < clt 5506 ⇝ cli 7006 ℋ chil 8812 −h cmv 8816 normhcno 8818 ⇝v chli 8820 Cℋ cch 8822 |
| This theorem is referenced by: projlem 9241 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 966 ax-gen 967 ax-8 968 ax-9 969 ax-10 970 ax-11 971 ax-12 972 ax-13 973 ax-14 974 ax-17 975 ax-4 977 ax-5o 979 ax-6o 982 ax-9o 1127 ax-10o 1144 ax-16 1214 ax-11o 1222 ax-ext 1464 ax-rep 2708 ax-sep 2718 ax-nul 2725 ax-pow 2758 ax-pr 2795 ax-un 2882 ax-inf2 4642 ax-hilex 8893 ax-hfvadd 8894 ax-hvcom 8895 ax-hvass 8896 ax-hv0cl 8897 ax-hvaddid 8898 ax-hfvmul 8899 ax-hvmulid 8900 ax-hvmulass 8901 ax-hvdistr1 8902 ax-hvdistr2 8903 ax-hvmul0 8904 ax-hfi 8970 ax-his1 8973 ax-his2 8974 ax-his3 8975 ax-his4 8976 ax-hcompl 9095 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-3or 780 df-3an 781 df-ex 985 df-sb 1176 df-eu 1386 df-mo 1387 df-clab 1470 df-cleq 1475 df-clel 1478 df-ne 1594 df-nel 1595 df-ral 1656 df-rex 1657 df-reu 1658 df-rab 1659 df-v 1819 df-sbc 1949 df-csb 2012 df-dif 2060 df-un 2061 df-in 2062 df-ss 2064 df-pss 2066 df-nul 2292 df-if 2374 df-pw 2414 df-sn 2424 df-pr 2425 df-tp 2427 df-op 2428 df-uni 2518 df-int 2548 df-iun 2582 df-br 2635 df-opab 2682 df-tr 2696 df-eprel 2848 df-id 2851 df-po 2856 df-so 2866 df-fr 2933 df-we 2950 df-ord 2967 df-on 2968 df-lim 2969 df-suc 2970 df-om 3148 df-xp 3200 df-rel 3201 df-cnv 3202 df-co 3203 df-dm 3204 df-rn 3205 df-res 3206 df-ima 3207 df-fun 3208 df-fn 3209 df-f 3210 df-f1 3211 df-fo 3212 df-f1o 3213 df-fv 3214 df-rdg 3948 df-opr 3981 df-oprab 3982 df-1st 4095 df-2nd 4096 df-1o 4149 df-oadd 4151 df-omul 4152 df-er 4277 df-ec 4279 df-qs 4282 df-en 4386 df-dom 4387 df-sdom 4388 df-sup 4589 df-ni 5020 df-pli 5021 df-mi 5022 df-lti 5023 df-plpq 5055 df-mpq 5056 df-enq 5057 df-nq 5058 df-plq 5059 df-mq 5060 df-rq 5061 df-ltq 5062 df-1q 5063 df-np 5106 df-1p 5107 df-plp 5108 df-mp 5109 df-ltp 5110 df-plpr 5184 df-mpr 5185 df-enr 5186 df-nr 5187 df-plr 5188 df-mr 5189 df-ltr 5190 df-0r 5191 df-1r 5192 df-m1r 5193 df-c 5260 df-0 5261 df-1 5262 df-i 5263 df-r 5264 df-plus 5265 df-mul 5266 df-lt 5267 df-sub 5376 df-neg 5378 df-pnf 5507 df-mnf 5508 df-xr 5509 df-ltxr 5510 df-le 5511 df-div 5723 df-n 5939 df-2 5984 df-3 5985 df-4 5986 df-n0 6132 df-z 6168 df-uz 6386 df-seq1 6509 df-exp 6600 df-sqr 6702 df-re 6783 df-im 6784 df-cj 6785 df-abs 6786 df-clim 7007 df-hnorm 8861 df-hvsub 8864 df-hlim 8865 df-hcau 8866 df-sh 9100 df-ch 9116 |