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Theorem lmflf 22608
Description: The topological limit relation on functions can be written in terms of the filter limit along the filter generated by the upper integer sets. (Contributed by Mario Carneiro, 13-Oct-2015.)
Hypotheses
Ref Expression
lmflf.1 𝑍 = (ℤ𝑀)
lmflf.2 𝐿 = (𝑍filGen(ℤ𝑍))
Assertion
Ref Expression
lmflf ((𝐽 ∈ (TopOn‘𝑋) ∧ 𝑀 ∈ ℤ ∧ 𝐹:𝑍𝑋) → (𝐹(⇝𝑡𝐽)𝑃𝑃 ∈ ((𝐽 fLimf 𝐿)‘𝐹)))

Proof of Theorem lmflf
Dummy variables 𝑗 𝑘 𝑥 𝑦 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 uzf 12234 . . . . . . . 8 :ℤ⟶𝒫 ℤ
2 ffn 6494 . . . . . . . 8 (ℤ:ℤ⟶𝒫 ℤ → ℤ Fn ℤ)
31, 2ax-mp 5 . . . . . . 7 Fn ℤ
4 lmflf.1 . . . . . . . 8 𝑍 = (ℤ𝑀)
5 uzssz 12252 . . . . . . . 8 (ℤ𝑀) ⊆ ℤ
64, 5eqsstri 3976 . . . . . . 7 𝑍 ⊆ ℤ
7 imaeq2 5903 . . . . . . . . 9 (𝑦 = (ℤ𝑗) → (𝐹𝑦) = (𝐹 “ (ℤ𝑗)))
87sseq1d 3973 . . . . . . . 8 (𝑦 = (ℤ𝑗) → ((𝐹𝑦) ⊆ 𝑥 ↔ (𝐹 “ (ℤ𝑗)) ⊆ 𝑥))
98rexima 6982 . . . . . . 7 ((ℤ Fn ℤ ∧ 𝑍 ⊆ ℤ) → (∃𝑦 ∈ (ℤ𝑍)(𝐹𝑦) ⊆ 𝑥 ↔ ∃𝑗𝑍 (𝐹 “ (ℤ𝑗)) ⊆ 𝑥))
103, 6, 9mp2an 691 . . . . . 6 (∃𝑦 ∈ (ℤ𝑍)(𝐹𝑦) ⊆ 𝑥 ↔ ∃𝑗𝑍 (𝐹 “ (ℤ𝑗)) ⊆ 𝑥)
11 simpl3 1190 . . . . . . . . 9 (((𝐽 ∈ (TopOn‘𝑋) ∧ 𝑀 ∈ ℤ ∧ 𝐹:𝑍𝑋) ∧ 𝑗𝑍) → 𝐹:𝑍𝑋)
1211ffund 6498 . . . . . . . 8 (((𝐽 ∈ (TopOn‘𝑋) ∧ 𝑀 ∈ ℤ ∧ 𝐹:𝑍𝑋) ∧ 𝑗𝑍) → Fun 𝐹)
13 uzss 12253 . . . . . . . . . . 11 (𝑗 ∈ (ℤ𝑀) → (ℤ𝑗) ⊆ (ℤ𝑀))
1413, 4eleq2s 2932 . . . . . . . . . 10 (𝑗𝑍 → (ℤ𝑗) ⊆ (ℤ𝑀))
1514adantl 485 . . . . . . . . 9 (((𝐽 ∈ (TopOn‘𝑋) ∧ 𝑀 ∈ ℤ ∧ 𝐹:𝑍𝑋) ∧ 𝑗𝑍) → (ℤ𝑗) ⊆ (ℤ𝑀))
1611fdmd 6504 . . . . . . . . . 10 (((𝐽 ∈ (TopOn‘𝑋) ∧ 𝑀 ∈ ℤ ∧ 𝐹:𝑍𝑋) ∧ 𝑗𝑍) → dom 𝐹 = 𝑍)
1716, 4syl6eq 2873 . . . . . . . . 9 (((𝐽 ∈ (TopOn‘𝑋) ∧ 𝑀 ∈ ℤ ∧ 𝐹:𝑍𝑋) ∧ 𝑗𝑍) → dom 𝐹 = (ℤ𝑀))
1815, 17sseqtrrd 3983 . . . . . . . 8 (((𝐽 ∈ (TopOn‘𝑋) ∧ 𝑀 ∈ ℤ ∧ 𝐹:𝑍𝑋) ∧ 𝑗𝑍) → (ℤ𝑗) ⊆ dom 𝐹)
19 funimass4 6712 . . . . . . . 8 ((Fun 𝐹 ∧ (ℤ𝑗) ⊆ dom 𝐹) → ((𝐹 “ (ℤ𝑗)) ⊆ 𝑥 ↔ ∀𝑘 ∈ (ℤ𝑗)(𝐹𝑘) ∈ 𝑥))
2012, 18, 19syl2anc 587 . . . . . . 7 (((𝐽 ∈ (TopOn‘𝑋) ∧ 𝑀 ∈ ℤ ∧ 𝐹:𝑍𝑋) ∧ 𝑗𝑍) → ((𝐹 “ (ℤ𝑗)) ⊆ 𝑥 ↔ ∀𝑘 ∈ (ℤ𝑗)(𝐹𝑘) ∈ 𝑥))
2120rexbidva 3282 . . . . . 6 ((𝐽 ∈ (TopOn‘𝑋) ∧ 𝑀 ∈ ℤ ∧ 𝐹:𝑍𝑋) → (∃𝑗𝑍 (𝐹 “ (ℤ𝑗)) ⊆ 𝑥 ↔ ∃𝑗𝑍𝑘 ∈ (ℤ𝑗)(𝐹𝑘) ∈ 𝑥))
2210, 21syl5rbb 287 . . . . 5 ((𝐽 ∈ (TopOn‘𝑋) ∧ 𝑀 ∈ ℤ ∧ 𝐹:𝑍𝑋) → (∃𝑗𝑍𝑘 ∈ (ℤ𝑗)(𝐹𝑘) ∈ 𝑥 ↔ ∃𝑦 ∈ (ℤ𝑍)(𝐹𝑦) ⊆ 𝑥))
2322imbi2d 344 . . . 4 ((𝐽 ∈ (TopOn‘𝑋) ∧ 𝑀 ∈ ℤ ∧ 𝐹:𝑍𝑋) → ((𝑃𝑥 → ∃𝑗𝑍𝑘 ∈ (ℤ𝑗)(𝐹𝑘) ∈ 𝑥) ↔ (𝑃𝑥 → ∃𝑦 ∈ (ℤ𝑍)(𝐹𝑦) ⊆ 𝑥)))
2423ralbidv 3187 . . 3 ((𝐽 ∈ (TopOn‘𝑋) ∧ 𝑀 ∈ ℤ ∧ 𝐹:𝑍𝑋) → (∀𝑥𝐽 (𝑃𝑥 → ∃𝑗𝑍𝑘 ∈ (ℤ𝑗)(𝐹𝑘) ∈ 𝑥) ↔ ∀𝑥𝐽 (𝑃𝑥 → ∃𝑦 ∈ (ℤ𝑍)(𝐹𝑦) ⊆ 𝑥)))
2524anbi2d 631 . 2 ((𝐽 ∈ (TopOn‘𝑋) ∧ 𝑀 ∈ ℤ ∧ 𝐹:𝑍𝑋) → ((𝑃𝑋 ∧ ∀𝑥𝐽 (𝑃𝑥 → ∃𝑗𝑍𝑘 ∈ (ℤ𝑗)(𝐹𝑘) ∈ 𝑥)) ↔ (𝑃𝑋 ∧ ∀𝑥𝐽 (𝑃𝑥 → ∃𝑦 ∈ (ℤ𝑍)(𝐹𝑦) ⊆ 𝑥))))
26 simp1 1133 . . 3 ((𝐽 ∈ (TopOn‘𝑋) ∧ 𝑀 ∈ ℤ ∧ 𝐹:𝑍𝑋) → 𝐽 ∈ (TopOn‘𝑋))
27 simp2 1134 . . 3 ((𝐽 ∈ (TopOn‘𝑋) ∧ 𝑀 ∈ ℤ ∧ 𝐹:𝑍𝑋) → 𝑀 ∈ ℤ)
28 simp3 1135 . . 3 ((𝐽 ∈ (TopOn‘𝑋) ∧ 𝑀 ∈ ℤ ∧ 𝐹:𝑍𝑋) → 𝐹:𝑍𝑋)
29 eqidd 2823 . . 3 (((𝐽 ∈ (TopOn‘𝑋) ∧ 𝑀 ∈ ℤ ∧ 𝐹:𝑍𝑋) ∧ 𝑘𝑍) → (𝐹𝑘) = (𝐹𝑘))
3026, 4, 27, 28, 29lmbrf 21863 . 2 ((𝐽 ∈ (TopOn‘𝑋) ∧ 𝑀 ∈ ℤ ∧ 𝐹:𝑍𝑋) → (𝐹(⇝𝑡𝐽)𝑃 ↔ (𝑃𝑋 ∧ ∀𝑥𝐽 (𝑃𝑥 → ∃𝑗𝑍𝑘 ∈ (ℤ𝑗)(𝐹𝑘) ∈ 𝑥))))
314uzfbas 22501 . . 3 (𝑀 ∈ ℤ → (ℤ𝑍) ∈ (fBas‘𝑍))
32 lmflf.2 . . . 4 𝐿 = (𝑍filGen(ℤ𝑍))
3332flffbas 22598 . . 3 ((𝐽 ∈ (TopOn‘𝑋) ∧ (ℤ𝑍) ∈ (fBas‘𝑍) ∧ 𝐹:𝑍𝑋) → (𝑃 ∈ ((𝐽 fLimf 𝐿)‘𝐹) ↔ (𝑃𝑋 ∧ ∀𝑥𝐽 (𝑃𝑥 → ∃𝑦 ∈ (ℤ𝑍)(𝐹𝑦) ⊆ 𝑥))))
3431, 33syl3an2 1161 . 2 ((𝐽 ∈ (TopOn‘𝑋) ∧ 𝑀 ∈ ℤ ∧ 𝐹:𝑍𝑋) → (𝑃 ∈ ((𝐽 fLimf 𝐿)‘𝐹) ↔ (𝑃𝑋 ∧ ∀𝑥𝐽 (𝑃𝑥 → ∃𝑦 ∈ (ℤ𝑍)(𝐹𝑦) ⊆ 𝑥))))
3525, 30, 343bitr4d 314 1 ((𝐽 ∈ (TopOn‘𝑋) ∧ 𝑀 ∈ ℤ ∧ 𝐹:𝑍𝑋) → (𝐹(⇝𝑡𝐽)𝑃𝑃 ∈ ((𝐽 fLimf 𝐿)‘𝐹)))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 209  wa 399  w3a 1084   = wceq 1538  wcel 2114  wral 3130  wrex 3131  wss 3908  𝒫 cpw 4511   class class class wbr 5042  dom cdm 5532  cima 5535  Fun wfun 6328   Fn wfn 6329  wf 6330  cfv 6334  (class class class)co 7140  cz 11969  cuz 12231  fBascfbas 20077  filGencfg 20078  TopOnctopon 21513  𝑡clm 21829   fLimf cflf 22538
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 1911  ax-6 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2178  ax-ext 2794  ax-rep 5166  ax-sep 5179  ax-nul 5186  ax-pow 5243  ax-pr 5307  ax-un 7446  ax-cnex 10582  ax-resscn 10583  ax-1cn 10584  ax-icn 10585  ax-addcl 10586  ax-addrcl 10587  ax-mulcl 10588  ax-mulrcl 10589  ax-i2m1 10594  ax-1ne0 10595  ax-rrecex 10598  ax-cnre 10599  ax-pre-lttri 10600  ax-pre-lttrn 10601
This theorem depends on definitions:  df-bi 210  df-an 400  df-or 845  df-3or 1085  df-3an 1086  df-tru 1541  df-ex 1782  df-nf 1786  df-sb 2070  df-mo 2622  df-eu 2653  df-clab 2801  df-cleq 2815  df-clel 2894  df-nfc 2962  df-ne 3012  df-nel 3116  df-ral 3135  df-rex 3136  df-reu 3137  df-rab 3139  df-v 3471  df-sbc 3748  df-csb 3856  df-dif 3911  df-un 3913  df-in 3915  df-ss 3925  df-pss 3927  df-nul 4266  df-if 4440  df-pw 4513  df-sn 4540  df-pr 4542  df-tp 4544  df-op 4546  df-uni 4814  df-iun 4896  df-br 5043  df-opab 5105  df-mpt 5123  df-tr 5149  df-id 5437  df-eprel 5442  df-po 5451  df-so 5452  df-fr 5491  df-we 5493  df-xp 5538  df-rel 5539  df-cnv 5540  df-co 5541  df-dm 5542  df-rn 5543  df-res 5544  df-ima 5545  df-pred 6126  df-ord 6172  df-on 6173  df-lim 6174  df-suc 6175  df-iota 6293  df-fun 6336  df-fn 6337  df-f 6338  df-f1 6339  df-fo 6340  df-f1o 6341  df-fv 6342  df-ov 7143  df-oprab 7144  df-mpo 7145  df-om 7566  df-1st 7675  df-2nd 7676  df-wrecs 7934  df-recs 7995  df-rdg 8033  df-er 8276  df-map 8395  df-pm 8396  df-en 8497  df-dom 8498  df-sdom 8499  df-pnf 10666  df-mnf 10667  df-xr 10668  df-ltxr 10669  df-le 10670  df-neg 10862  df-nn 11626  df-z 11970  df-uz 12232  df-rest 16687  df-fbas 20086  df-fg 20087  df-top 21497  df-topon 21514  df-ntr 21623  df-nei 21701  df-lm 21832  df-fil 22449  df-fm 22541  df-flim 22542  df-flf 22543
This theorem is referenced by:  cmetcaulem  23890
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