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| Mirrors > Home > MPE Home > Th. List > Mathboxes > xlimresdm | Structured version Visualization version GIF version | ||
| Description: A function converges in the extended reals iff its restriction to an upper integers set converges. (Contributed by Glauco Siliprandi, 23-Apr-2023.) |
| Ref | Expression |
|---|---|
| xlimresdm.1 | ⊢ (𝜑 → 𝐹 ∈ (ℝ* ↑pm ℂ)) |
| xlimresdm.2 | ⊢ (𝜑 → 𝑀 ∈ ℤ) |
| Ref | Expression |
|---|---|
| xlimresdm | ⊢ (𝜑 → (𝐹 ∈ dom ~~>* ↔ (𝐹 ↾ (ℤ≥‘𝑀)) ∈ dom ~~>*)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | xlimrel 46394 | . . 3 ⊢ Rel ~~>* | |
| 2 | xlimdm 46431 | . . . . 5 ⊢ (𝐹 ∈ dom ~~>* ↔ 𝐹~~>*(~~>*‘𝐹)) | |
| 3 | 2 | bilani 508 | . . . 4 ⊢ ((𝜑 ∧ 𝐹 ∈ dom ~~>*) → 𝐹~~>*(~~>*‘𝐹)) |
| 4 | xlimresdm.1 | . . . . . 6 ⊢ (𝜑 → 𝐹 ∈ (ℝ* ↑pm ℂ)) | |
| 5 | 4 | adantr 484 | . . . . 5 ⊢ ((𝜑 ∧ 𝐹 ∈ dom ~~>*) → 𝐹 ∈ (ℝ* ↑pm ℂ)) |
| 6 | xlimresdm.2 | . . . . . 6 ⊢ (𝜑 → 𝑀 ∈ ℤ) | |
| 7 | 6 | adantr 484 | . . . . 5 ⊢ ((𝜑 ∧ 𝐹 ∈ dom ~~>*) → 𝑀 ∈ ℤ) |
| 8 | 5, 7 | xlimres 46395 | . . . 4 ⊢ ((𝜑 ∧ 𝐹 ∈ dom ~~>*) → (𝐹~~>*(~~>*‘𝐹) ↔ (𝐹 ↾ (ℤ≥‘𝑀))~~>*(~~>*‘𝐹))) |
| 9 | 3, 8 | mpbid 234 | . . 3 ⊢ ((𝜑 ∧ 𝐹 ∈ dom ~~>*) → (𝐹 ↾ (ℤ≥‘𝑀))~~>*(~~>*‘𝐹)) |
| 10 | releldm 5920 | . . 3 ⊢ ((Rel ~~>* ∧ (𝐹 ↾ (ℤ≥‘𝑀))~~>*(~~>*‘𝐹)) → (𝐹 ↾ (ℤ≥‘𝑀)) ∈ dom ~~>*) | |
| 11 | 1, 9, 10 | sylancr 596 | . 2 ⊢ ((𝜑 ∧ 𝐹 ∈ dom ~~>*) → (𝐹 ↾ (ℤ≥‘𝑀)) ∈ dom ~~>*) |
| 12 | xlimdm 46431 | . . . . 5 ⊢ ((𝐹 ↾ (ℤ≥‘𝑀)) ∈ dom ~~>* ↔ (𝐹 ↾ (ℤ≥‘𝑀))~~>*(~~>*‘(𝐹 ↾ (ℤ≥‘𝑀)))) | |
| 13 | 12 | bilani 508 | . . . 4 ⊢ ((𝜑 ∧ (𝐹 ↾ (ℤ≥‘𝑀)) ∈ dom ~~>*) → (𝐹 ↾ (ℤ≥‘𝑀))~~>*(~~>*‘(𝐹 ↾ (ℤ≥‘𝑀)))) |
| 14 | 4, 6 | xlimres 46395 | . . . . 5 ⊢ (𝜑 → (𝐹~~>*(~~>*‘(𝐹 ↾ (ℤ≥‘𝑀))) ↔ (𝐹 ↾ (ℤ≥‘𝑀))~~>*(~~>*‘(𝐹 ↾ (ℤ≥‘𝑀))))) |
| 15 | 14 | adantr 484 | . . . 4 ⊢ ((𝜑 ∧ (𝐹 ↾ (ℤ≥‘𝑀)) ∈ dom ~~>*) → (𝐹~~>*(~~>*‘(𝐹 ↾ (ℤ≥‘𝑀))) ↔ (𝐹 ↾ (ℤ≥‘𝑀))~~>*(~~>*‘(𝐹 ↾ (ℤ≥‘𝑀))))) |
| 16 | 13, 15 | mpbird 259 | . . 3 ⊢ ((𝜑 ∧ (𝐹 ↾ (ℤ≥‘𝑀)) ∈ dom ~~>*) → 𝐹~~>*(~~>*‘(𝐹 ↾ (ℤ≥‘𝑀)))) |
| 17 | releldm 5920 | . . 3 ⊢ ((Rel ~~>* ∧ 𝐹~~>*(~~>*‘(𝐹 ↾ (ℤ≥‘𝑀)))) → 𝐹 ∈ dom ~~>*) | |
| 18 | 1, 16, 17 | sylancr 596 | . 2 ⊢ ((𝜑 ∧ (𝐹 ↾ (ℤ≥‘𝑀)) ∈ dom ~~>*) → 𝐹 ∈ dom ~~>*) |
| 19 | 11, 18 | impbida 810 | 1 ⊢ (𝜑 → (𝐹 ∈ dom ~~>* ↔ (𝐹 ↾ (ℤ≥‘𝑀)) ∈ dom ~~>*)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 208 ∧ wa 399 ∈ wcel 2142 class class class wbr 5100 dom cdm 5647 ↾ cres 5649 Rel wrel 5652 ‘cfv 6521 (class class class)co 7396 ↑pm cpm 8809 ℂcc 11071 ℝ*cxr 11215 ℤcz 12568 ℤ≥cuz 12839 ~~>*clsxlim 46392 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1815 ax-4 1829 ax-5 1930 ax-6 1987 ax-7 2028 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-sep 5246 ax-nul 5256 ax-pow 5322 ax-pr 5390 ax-un 7718 ax-cnex 11129 ax-resscn 11130 ax-1cn 11131 ax-icn 11132 ax-addcl 11133 ax-addrcl 11134 ax-mulcl 11135 ax-mulrcl 11136 ax-mulcom 11137 ax-addass 11138 ax-mulass 11139 ax-distr 11140 ax-i2m1 11141 ax-1ne0 11142 ax-1rid 11143 ax-rnegex 11144 ax-rrecex 11145 ax-cnre 11146 ax-pre-lttri 11147 ax-pre-lttrn 11148 ax-pre-ltadd 11149 ax-pre-mulgt0 11150 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1099 df-3an 1100 df-tru 1563 df-fal 1573 df-ex 1800 df-nf 1804 df-sb 2091 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3062 df-ral 3077 df-rex 3087 df-reu 3368 df-rab 3415 df-v 3456 df-sbc 3745 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4481 df-pw 4557 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-int 4906 df-iun 4951 df-br 5101 df-opab 5163 df-mpt 5182 df-tr 5208 df-id 5542 df-eprel 5547 df-po 5555 df-so 5556 df-fr 5600 df-we 5602 df-xp 5653 df-rel 5654 df-cnv 5655 df-co 5656 df-dm 5657 df-rn 5658 df-res 5659 df-ima 5660 df-pred 6288 df-ord 6349 df-on 6350 df-lim 6351 df-suc 6352 df-iota 6477 df-fun 6523 df-fn 6524 df-f 6525 df-f1 6526 df-fo 6527 df-f1o 6528 df-fv 6529 df-riota 7353 df-ov 7399 df-oprab 7400 df-mpo 7401 df-om 7847 df-1st 7970 df-2nd 7971 df-frecs 8262 df-wrecs 8293 df-recs 8342 df-rdg 8381 df-1o 8437 df-2o 8438 df-er 8678 df-pm 8811 df-en 8928 df-dom 8929 df-sdom 8930 df-fin 8931 df-fi 9357 df-pnf 11218 df-mnf 11219 df-xr 11220 df-ltxr 11221 df-le 11222 df-sub 11416 df-neg 11417 df-nn 12211 df-z 12569 df-uz 12840 df-topgen 17472 df-ordt 17531 df-ps 18598 df-tsr 18599 df-top 22954 df-topon 22971 df-bases 23006 df-lm 23289 df-haus 23375 df-xlim 46393 |
| This theorem is referenced by: xlimliminflimsup 46436 |
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