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| Mirrors > Home > MPE Home > Th. List > climshft | Structured version Visualization version GIF version | ||
| Description: A shifted function converges iff the original function converges. (Contributed by NM, 16-Aug-2005.) (Revised by Mario Carneiro, 31-Jan-2014.) |
| Ref | Expression |
|---|---|
| climshft | ⊢ ((𝑀 ∈ ℤ ∧ 𝐹 ∈ 𝑉) → ((𝐹 shift 𝑀) ⇝ 𝐴 ↔ 𝐹 ⇝ 𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | oveq1 7456 | . . . . . 6 ⊢ (𝑓 = 𝐹 → (𝑓 shift 𝑀) = (𝐹 shift 𝑀)) | |
| 2 | 1 | breq1d 5116 | . . . . 5 ⊢ (𝑓 = 𝐹 → ((𝑓 shift 𝑀) ⇝ 𝐴 ↔ (𝐹 shift 𝑀) ⇝ 𝐴)) |
| 3 | breq1 5109 | . . . . 5 ⊢ (𝑓 = 𝐹 → (𝑓 ⇝ 𝐴 ↔ 𝐹 ⇝ 𝐴)) | |
| 4 | 2, 3 | bibi12d 348 | . . . 4 ⊢ (𝑓 = 𝐹 → (((𝑓 shift 𝑀) ⇝ 𝐴 ↔ 𝑓 ⇝ 𝐴) ↔ ((𝐹 shift 𝑀) ⇝ 𝐴 ↔ 𝐹 ⇝ 𝐴))) |
| 5 | 4 | imbi2d 343 | . . 3 ⊢ (𝑓 = 𝐹 → ((𝑀 ∈ ℤ → ((𝑓 shift 𝑀) ⇝ 𝐴 ↔ 𝑓 ⇝ 𝐴)) ↔ (𝑀 ∈ ℤ → ((𝐹 shift 𝑀) ⇝ 𝐴 ↔ 𝐹 ⇝ 𝐴)))) |
| 6 | znegcl 12769 | . . . . . 6 ⊢ (𝑀 ∈ ℤ → -𝑀 ∈ ℤ) | |
| 7 | ovex 7482 | . . . . . . 7 ⊢ (𝑓 shift 𝑀) ∈ V | |
| 8 | 7 | climshftlem 15782 | . . . . . 6 ⊢ ( -𝑀 ∈ ℤ → ((𝑓 shift 𝑀) ⇝ 𝐴 → ((𝑓 shift 𝑀) shift -𝑀) ⇝ 𝐴)) |
| 9 | 6, 8 | syl 18 | . . . . 5 ⊢ (𝑀 ∈ ℤ → ((𝑓 shift 𝑀) ⇝ 𝐴 → ((𝑓 shift 𝑀) shift -𝑀) ⇝ 𝐴)) |
| 10 | eqid 2763 | . . . . . 6 ⊢ (ℤ≥‘𝑀) = (ℤ≥‘𝑀) | |
| 11 | ovexd 7484 | . . . . . 6 ⊢ (𝑀 ∈ ℤ → ((𝑓 shift 𝑀) shift -𝑀) ∈ V) | |
| 12 | vex 3458 | . . . . . . 7 ⊢ 𝑓 ∈ V | |
| 13 | 12 | a1i 11 | . . . . . 6 ⊢ (𝑀 ∈ ℤ → 𝑓 ∈ V) |
| 14 | id 23 | . . . . . 6 ⊢ (𝑀 ∈ ℤ → 𝑀 ∈ ℤ) | |
| 15 | zcn 12736 | . . . . . . 7 ⊢ (𝑀 ∈ ℤ → 𝑀 ∈ ℂ) | |
| 16 | eluzelcn 13015 | . . . . . . 7 ⊢ (𝑘 ∈ (ℤ≥‘𝑀) → 𝑘 ∈ ℂ) | |
| 17 | 12 | shftcan1 15277 | . . . . . . 7 ⊢ ((𝑀 ∈ ℂ ∧ 𝑘 ∈ ℂ) → (((𝑓 shift 𝑀) shift -𝑀)‘𝑘) = (𝑓‘𝑘)) |
| 18 | 15, 16, 17 | syl2an 608 | . . . . . 6 ⊢ ((𝑀 ∈ ℤ ∧ 𝑘 ∈ (ℤ≥‘𝑀)) → (((𝑓 shift 𝑀) shift -𝑀)‘𝑘) = (𝑓‘𝑘)) |
| 19 | 10, 11, 13, 14, 18 | climeq 15775 | . . . . 5 ⊢ (𝑀 ∈ ℤ → (((𝑓 shift 𝑀) shift -𝑀) ⇝ 𝐴 ↔ 𝑓 ⇝ 𝐴)) |
| 20 | 9, 19 | sylibd 242 | . . . 4 ⊢ (𝑀 ∈ ℤ → ((𝑓 shift 𝑀) ⇝ 𝐴 → 𝑓 ⇝ 𝐴)) |
| 21 | 12 | climshftlem 15782 | . . . 4 ⊢ (𝑀 ∈ ℤ → (𝑓 ⇝ 𝐴 → (𝑓 shift 𝑀) ⇝ 𝐴)) |
| 22 | 20, 21 | impbid 215 | . . 3 ⊢ (𝑀 ∈ ℤ → ((𝑓 shift 𝑀) ⇝ 𝐴 ↔ 𝑓 ⇝ 𝐴)) |
| 23 | 5, 22 | vtoclg 3521 | . 2 ⊢ (𝐹 ∈ 𝑉 → (𝑀 ∈ ℤ → ((𝐹 shift 𝑀) ⇝ 𝐴 ↔ 𝐹 ⇝ 𝐴))) |
| 24 | 23 | impcom 413 | 1 ⊢ ((𝑀 ∈ ℤ ∧ 𝐹 ∈ 𝑉) → ((𝐹 shift 𝑀) ⇝ 𝐴 ↔ 𝐹 ⇝ 𝐴)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 = wceq 1570 ∈ wcel 2147 Vcvv 3454 class class class wbr 5106 ‘cfv 6564 (class class class)co 7449 ℂcc 11235 -cneg 11579 ℤcz 12731 ℤ≥cuz 13003 shift cshi 15260 ⇝ cli 15692 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-rep 5236 ax-sep 5253 ax-nul 5264 ax-pow 5332 ax-pr 5396 ax-un 7781 ax-cnex 11293 ax-resscn 11294 ax-1cn 11295 ax-icn 11296 ax-addcl 11297 ax-addrcl 11298 ax-mulcl 11299 ax-mulrcl 11300 ax-mulcom 11301 ax-addass 11302 ax-mulass 11303 ax-distr 11304 ax-i2m1 11305 ax-1ne0 11306 ax-1rid 11307 ax-rnegex 11308 ax-rrecex 11309 ax-cnre 11310 ax-pre-lttri 11311 ax-pre-lttrn 11312 ax-pre-ltadd 11313 ax-pre-mulgt0 11314 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-iun 4956 df-br 5107 df-opab 5172 df-mpt 5191 df-tr 5217 df-id 5551 df-eprel 5556 df-po 5564 df-so 5565 df-fr 5609 df-we 5611 df-xp 5662 df-rel 5663 df-cnv 5664 df-co 5665 df-dm 5666 df-rn 5667 df-res 5668 df-ima 5669 df-pred 6328 df-ord 6389 df-on 6390 df-lim 6391 df-suc 6392 df-iota 6518 df-fun 6566 df-fn 6567 df-f 6568 df-f1 6569 df-fo 6570 df-f1o 6571 df-fv 6572 df-riota 7406 df-ov 7452 df-oprab 7453 df-mpo 7454 df-om 7910 df-2nd 8034 df-frecs 8335 df-wrecs 8366 df-recs 8415 df-rdg 8454 df-er 8753 df-en 9010 df-dom 9011 df-sdom 9012 df-pnf 11382 df-mnf 11383 df-xr 11384 df-ltxr 11385 df-le 11386 df-sub 11580 df-neg 11581 df-nn 12374 df-n0 12645 df-z 12732 df-uz 13004 df-shft 15261 df-clim 15696 |
| This theorem is used by: climshft2 15790 isershft 15872 cvgrat 16093 eftlub 16318 dvradcnv2 45586 binomcxplemnotnn0 45595 |
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