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| Mirrors > Home > MPE Home > Th. List > Mathboxes > limsupubuzmpt | Structured version Visualization version GIF version | ||
| Description: If the limsup is not +∞, then the function is eventually bounded. (Contributed by Glauco Siliprandi, 23-Oct-2021.) |
| Ref | Expression |
|---|---|
| limsupubuzmpt.j | ⊢ Ⅎ𝑗𝜑 |
| limsupubuzmpt.z | ⊢ 𝑍 = (ℤ≥‘𝑀) |
| limsupubuzmpt.b | ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑍) → 𝐵 ∈ ℝ) |
| limsupubuzmpt.n | ⊢ (𝜑 → (lim sup‘(𝑗 ∈ 𝑍 ↦ 𝐵)) ≠ +∞) |
| Ref | Expression |
|---|---|
| limsupubuzmpt | ⊢ (𝜑 → ∃𝑥 ∈ ℝ ∀𝑗 ∈ 𝑍 𝐵 ≤ 𝑥) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nfmpt1 5171 | . . . 4 ⊢ Ⅎ𝑗(𝑗 ∈ 𝑍 ↦ 𝐵) | |
| 2 | limsupubuzmpt.z | . . . 4 ⊢ 𝑍 = (ℤ≥‘𝑀) | |
| 3 | limsupubuzmpt.j | . . . . 5 ⊢ Ⅎ𝑗𝜑 | |
| 4 | limsupubuzmpt.b | . . . . 5 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑍) → 𝐵 ∈ ℝ) | |
| 5 | eqid 2739 | . . . . 5 ⊢ (𝑗 ∈ 𝑍 ↦ 𝐵) = (𝑗 ∈ 𝑍 ↦ 𝐵) | |
| 6 | 3, 4, 5 | fmptdf 7058 | . . . 4 ⊢ (𝜑 → (𝑗 ∈ 𝑍 ↦ 𝐵):𝑍⟶ℝ) |
| 7 | limsupubuzmpt.n | . . . 4 ⊢ (𝜑 → (lim sup‘(𝑗 ∈ 𝑍 ↦ 𝐵)) ≠ +∞) | |
| 8 | 1, 2, 6, 7 | limsupubuz 46156 | . . 3 ⊢ (𝜑 → ∃𝑦 ∈ ℝ ∀𝑗 ∈ 𝑍 ((𝑗 ∈ 𝑍 ↦ 𝐵)‘𝑗) ≤ 𝑦) |
| 9 | 5 | a1i 11 | . . . . . . 7 ⊢ (𝜑 → (𝑗 ∈ 𝑍 ↦ 𝐵) = (𝑗 ∈ 𝑍 ↦ 𝐵)) |
| 10 | 9, 4 | fvmpt2d 6949 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑍) → ((𝑗 ∈ 𝑍 ↦ 𝐵)‘𝑗) = 𝐵) |
| 11 | 10 | breq1d 5082 | . . . . 5 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑍) → (((𝑗 ∈ 𝑍 ↦ 𝐵)‘𝑗) ≤ 𝑦 ↔ 𝐵 ≤ 𝑦)) |
| 12 | 3, 11 | ralbida 3250 | . . . 4 ⊢ (𝜑 → (∀𝑗 ∈ 𝑍 ((𝑗 ∈ 𝑍 ↦ 𝐵)‘𝑗) ≤ 𝑦 ↔ ∀𝑗 ∈ 𝑍 𝐵 ≤ 𝑦)) |
| 13 | 12 | rexbidv 3163 | . . 3 ⊢ (𝜑 → (∃𝑦 ∈ ℝ ∀𝑗 ∈ 𝑍 ((𝑗 ∈ 𝑍 ↦ 𝐵)‘𝑗) ≤ 𝑦 ↔ ∃𝑦 ∈ ℝ ∀𝑗 ∈ 𝑍 𝐵 ≤ 𝑦)) |
| 14 | 8, 13 | mpbid 233 | . 2 ⊢ (𝜑 → ∃𝑦 ∈ ℝ ∀𝑗 ∈ 𝑍 𝐵 ≤ 𝑦) |
| 15 | breq2 5076 | . . . 4 ⊢ (𝑦 = 𝑥 → (𝐵 ≤ 𝑦 ↔ 𝐵 ≤ 𝑥)) | |
| 16 | 15 | ralbidv 3162 | . . 3 ⊢ (𝑦 = 𝑥 → (∀𝑗 ∈ 𝑍 𝐵 ≤ 𝑦 ↔ ∀𝑗 ∈ 𝑍 𝐵 ≤ 𝑥)) |
| 17 | 16 | cbvrexvw 3218 | . 2 ⊢ (∃𝑦 ∈ ℝ ∀𝑗 ∈ 𝑍 𝐵 ≤ 𝑦 ↔ ∃𝑥 ∈ ℝ ∀𝑗 ∈ 𝑍 𝐵 ≤ 𝑥) |
| 18 | 14, 17 | sylib 219 | 1 ⊢ (𝜑 → ∃𝑥 ∈ ℝ ∀𝑗 ∈ 𝑍 𝐵 ≤ 𝑥) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 396 = wceq 1547 Ⅎwnf 1790 ∈ wcel 2119 ≠ wne 2934 ∀wral 3053 ∃wrex 3063 class class class wbr 5072 ↦ cmpt 5153 ‘cfv 6485 ℝcr 11028 +∞cpnf 11167 ≤ cle 11171 ℤ≥cuz 12779 lim supclsp 15423 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2711 ax-rep 5199 ax-sep 5218 ax-nul 5228 ax-pow 5294 ax-pr 5362 ax-un 7678 ax-cnex 11085 ax-resscn 11086 ax-1cn 11087 ax-icn 11088 ax-addcl 11089 ax-addrcl 11090 ax-mulcl 11091 ax-mulrcl 11092 ax-mulcom 11093 ax-addass 11094 ax-mulass 11095 ax-distr 11096 ax-i2m1 11097 ax-1ne0 11098 ax-1rid 11099 ax-rnegex 11100 ax-rrecex 11101 ax-cnre 11102 ax-pre-lttri 11103 ax-pre-lttrn 11104 ax-pre-ltadd 11105 ax-pre-mulgt0 11106 ax-pre-sup 11107 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3or 1093 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2718 df-cleq 2731 df-clel 2814 df-nfc 2888 df-ne 2935 df-nel 3039 df-ral 3054 df-rex 3064 df-rmo 3344 df-reu 3345 df-rab 3392 df-v 3433 df-sbc 3724 df-csb 3832 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3903 df-nul 4262 df-if 4455 df-pw 4531 df-sn 4556 df-pr 4558 df-op 4562 df-uni 4839 df-iun 4923 df-br 5073 df-opab 5135 df-mpt 5154 df-tr 5180 df-id 5513 df-eprel 5518 df-po 5526 df-so 5527 df-fr 5571 df-we 5573 df-xp 5624 df-rel 5625 df-cnv 5626 df-co 5627 df-dm 5628 df-rn 5629 df-res 5630 df-ima 5631 df-pred 6252 df-ord 6313 df-on 6314 df-lim 6315 df-suc 6316 df-iota 6441 df-fun 6487 df-fn 6488 df-f 6489 df-f1 6490 df-fo 6491 df-f1o 6492 df-fv 6493 df-riota 7313 df-ov 7359 df-oprab 7360 df-mpo 7361 df-om 7807 df-1st 7931 df-2nd 7932 df-frecs 8221 df-wrecs 8252 df-recs 8301 df-rdg 8339 df-1o 8395 df-er 8633 df-en 8884 df-dom 8885 df-sdom 8886 df-fin 8887 df-sup 9345 df-inf 9346 df-pnf 11172 df-mnf 11173 df-xr 11174 df-ltxr 11175 df-le 11176 df-sub 11370 df-neg 11371 df-nn 12166 df-n0 12429 df-z 12516 df-uz 12780 df-ico 13295 df-fz 13453 df-fl 13742 df-ceil 13743 df-limsup 15424 |
| This theorem is referenced by: smflimsuplem2 47264 smflimsuplem5 47267 |
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