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Theorem limsupvaluzmpt 43148
Description: The superior limit, when the domain of the function is a set of upper integers (the first condition is needed, otherwise the l.h.s. would be -∞ and the r.h.s. would be +∞). (Contributed by Glauco Siliprandi, 23-Oct-2021.)
Hypotheses
Ref Expression
limsupvaluzmpt.j 𝑗𝜑
limsupvaluzmpt.m (𝜑𝑀 ∈ ℤ)
limsupvaluzmpt.z 𝑍 = (ℤ𝑀)
limsupvaluzmpt.b ((𝜑𝑗𝑍) → 𝐵 ∈ ℝ*)
Assertion
Ref Expression
limsupvaluzmpt (𝜑 → (lim sup‘(𝑗𝑍𝐵)) = inf(ran (𝑘𝑍 ↦ sup(ran (𝑗 ∈ (ℤ𝑘) ↦ 𝐵), ℝ*, < )), ℝ*, < ))
Distinct variable groups:   𝐵,𝑘   𝑗,𝑍,𝑘
Allowed substitution hints:   𝜑(𝑗,𝑘)   𝐵(𝑗)   𝑀(𝑗,𝑘)

Proof of Theorem limsupvaluzmpt
StepHypRef Expression
1 limsupvaluzmpt.m . . 3 (𝜑𝑀 ∈ ℤ)
2 limsupvaluzmpt.z . . 3 𝑍 = (ℤ𝑀)
3 limsupvaluzmpt.j . . . 4 𝑗𝜑
4 limsupvaluzmpt.b . . . 4 ((𝜑𝑗𝑍) → 𝐵 ∈ ℝ*)
53, 4fmptd2f 42667 . . 3 (𝜑 → (𝑗𝑍𝐵):𝑍⟶ℝ*)
61, 2, 5limsupvaluz 43139 . 2 (𝜑 → (lim sup‘(𝑗𝑍𝐵)) = inf(ran (𝑘𝑍 ↦ sup(ran ((𝑗𝑍𝐵) ↾ (ℤ𝑘)), ℝ*, < )), ℝ*, < ))
72uzssd3 42856 . . . . . . . . 9 (𝑘𝑍 → (ℤ𝑘) ⊆ 𝑍)
87resmptd 5937 . . . . . . . 8 (𝑘𝑍 → ((𝑗𝑍𝐵) ↾ (ℤ𝑘)) = (𝑗 ∈ (ℤ𝑘) ↦ 𝐵))
98rneqd 5836 . . . . . . 7 (𝑘𝑍 → ran ((𝑗𝑍𝐵) ↾ (ℤ𝑘)) = ran (𝑗 ∈ (ℤ𝑘) ↦ 𝐵))
109supeq1d 9135 . . . . . 6 (𝑘𝑍 → sup(ran ((𝑗𝑍𝐵) ↾ (ℤ𝑘)), ℝ*, < ) = sup(ran (𝑗 ∈ (ℤ𝑘) ↦ 𝐵), ℝ*, < ))
1110mpteq2ia 5173 . . . . 5 (𝑘𝑍 ↦ sup(ran ((𝑗𝑍𝐵) ↾ (ℤ𝑘)), ℝ*, < )) = (𝑘𝑍 ↦ sup(ran (𝑗 ∈ (ℤ𝑘) ↦ 𝐵), ℝ*, < ))
1211a1i 11 . . . 4 (𝜑 → (𝑘𝑍 ↦ sup(ran ((𝑗𝑍𝐵) ↾ (ℤ𝑘)), ℝ*, < )) = (𝑘𝑍 ↦ sup(ran (𝑗 ∈ (ℤ𝑘) ↦ 𝐵), ℝ*, < )))
1312rneqd 5836 . . 3 (𝜑 → ran (𝑘𝑍 ↦ sup(ran ((𝑗𝑍𝐵) ↾ (ℤ𝑘)), ℝ*, < )) = ran (𝑘𝑍 ↦ sup(ran (𝑗 ∈ (ℤ𝑘) ↦ 𝐵), ℝ*, < )))
1413infeq1d 9166 . 2 (𝜑 → inf(ran (𝑘𝑍 ↦ sup(ran ((𝑗𝑍𝐵) ↾ (ℤ𝑘)), ℝ*, < )), ℝ*, < ) = inf(ran (𝑘𝑍 ↦ sup(ran (𝑗 ∈ (ℤ𝑘) ↦ 𝐵), ℝ*, < )), ℝ*, < ))
156, 14eqtrd 2778 1 (𝜑 → (lim sup‘(𝑗𝑍𝐵)) = inf(ran (𝑘𝑍 ↦ sup(ran (𝑗 ∈ (ℤ𝑘) ↦ 𝐵), ℝ*, < )), ℝ*, < ))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 395   = wceq 1539  wnf 1787  wcel 2108  cmpt 5153  ran crn 5581  cres 5582  cfv 6418  supcsup 9129  infcinf 9130  *cxr 10939   < clt 10940  cz 12249  cuz 12511  lim supclsp 15107
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1799  ax-4 1813  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2110  ax-9 2118  ax-10 2139  ax-11 2156  ax-12 2173  ax-ext 2709  ax-rep 5205  ax-sep 5218  ax-nul 5225  ax-pow 5283  ax-pr 5347  ax-un 7566  ax-cnex 10858  ax-resscn 10859  ax-1cn 10860  ax-icn 10861  ax-addcl 10862  ax-addrcl 10863  ax-mulcl 10864  ax-mulrcl 10865  ax-mulcom 10866  ax-addass 10867  ax-mulass 10868  ax-distr 10869  ax-i2m1 10870  ax-1ne0 10871  ax-1rid 10872  ax-rnegex 10873  ax-rrecex 10874  ax-cnre 10875  ax-pre-lttri 10876  ax-pre-lttrn 10877  ax-pre-ltadd 10878  ax-pre-mulgt0 10879  ax-pre-sup 10880
This theorem depends on definitions:  df-bi 206  df-an 396  df-or 844  df-3or 1086  df-3an 1087  df-tru 1542  df-fal 1552  df-ex 1784  df-nf 1788  df-sb 2069  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2817  df-nfc 2888  df-ne 2943  df-nel 3049  df-ral 3068  df-rex 3069  df-reu 3070  df-rmo 3071  df-rab 3072  df-v 3424  df-sbc 3712  df-csb 3829  df-dif 3886  df-un 3888  df-in 3890  df-ss 3900  df-pss 3902  df-nul 4254  df-if 4457  df-pw 4532  df-sn 4559  df-pr 4561  df-tp 4563  df-op 4565  df-uni 4837  df-iun 4923  df-br 5071  df-opab 5133  df-mpt 5154  df-tr 5188  df-id 5480  df-eprel 5486  df-po 5494  df-so 5495  df-fr 5535  df-we 5537  df-xp 5586  df-rel 5587  df-cnv 5588  df-co 5589  df-dm 5590  df-rn 5591  df-res 5592  df-ima 5593  df-pred 6191  df-ord 6254  df-on 6255  df-lim 6256  df-suc 6257  df-iota 6376  df-fun 6420  df-fn 6421  df-f 6422  df-f1 6423  df-fo 6424  df-f1o 6425  df-fv 6426  df-riota 7212  df-ov 7258  df-oprab 7259  df-mpo 7260  df-om 7688  df-1st 7804  df-2nd 7805  df-frecs 8068  df-wrecs 8099  df-recs 8173  df-rdg 8212  df-er 8456  df-en 8692  df-dom 8693  df-sdom 8694  df-sup 9131  df-inf 9132  df-pnf 10942  df-mnf 10943  df-xr 10944  df-ltxr 10945  df-le 10946  df-sub 11137  df-neg 11138  df-nn 11904  df-n0 12164  df-z 12250  df-uz 12512  df-ico 13014  df-fl 13440  df-limsup 15108
This theorem is referenced by:  smflimsuplem4  44243
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