| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > climshft | 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 6001 | . . . . . 6 ⊢ (𝑓 = 𝐹 → (𝑓 shift 𝑀) = (𝐹 shift 𝑀)) | |
| 2 | 1 | breq1d 4092 | . . . . 5 ⊢ (𝑓 = 𝐹 → ((𝑓 shift 𝑀) ⇝ 𝐴 ↔ (𝐹 shift 𝑀) ⇝ 𝐴)) |
| 3 | breq1 4085 | . . . . 5 ⊢ (𝑓 = 𝐹 → (𝑓 ⇝ 𝐴 ↔ 𝐹 ⇝ 𝐴)) | |
| 4 | 2, 3 | bibi12d 235 | . . . 4 ⊢ (𝑓 = 𝐹 → (((𝑓 shift 𝑀) ⇝ 𝐴 ↔ 𝑓 ⇝ 𝐴) ↔ ((𝐹 shift 𝑀) ⇝ 𝐴 ↔ 𝐹 ⇝ 𝐴))) |
| 5 | 4 | imbi2d 230 | . . 3 ⊢ (𝑓 = 𝐹 → ((𝑀 ∈ ℤ → ((𝑓 shift 𝑀) ⇝ 𝐴 ↔ 𝑓 ⇝ 𝐴)) ↔ (𝑀 ∈ ℤ → ((𝐹 shift 𝑀) ⇝ 𝐴 ↔ 𝐹 ⇝ 𝐴)))) |
| 6 | znegcl 9465 | . . . . . 6 ⊢ (𝑀 ∈ ℤ → -𝑀 ∈ ℤ) | |
| 7 | vex 2802 | . . . . . . 7 ⊢ 𝑓 ∈ V | |
| 8 | zcn 9439 | . . . . . . 7 ⊢ (𝑀 ∈ ℤ → 𝑀 ∈ ℂ) | |
| 9 | ovshftex 11316 | . . . . . . 7 ⊢ ((𝑓 ∈ V ∧ 𝑀 ∈ ℂ) → (𝑓 shift 𝑀) ∈ V) | |
| 10 | 7, 8, 9 | sylancr 414 | . . . . . 6 ⊢ (𝑀 ∈ ℤ → (𝑓 shift 𝑀) ∈ V) |
| 11 | climshftlemg 11799 | . . . . . 6 ⊢ ((-𝑀 ∈ ℤ ∧ (𝑓 shift 𝑀) ∈ V) → ((𝑓 shift 𝑀) ⇝ 𝐴 → ((𝑓 shift 𝑀) shift -𝑀) ⇝ 𝐴)) | |
| 12 | 6, 10, 11 | syl2anc 411 | . . . . 5 ⊢ (𝑀 ∈ ℤ → ((𝑓 shift 𝑀) ⇝ 𝐴 → ((𝑓 shift 𝑀) shift -𝑀) ⇝ 𝐴)) |
| 13 | eqid 2229 | . . . . . 6 ⊢ (ℤ≥‘𝑀) = (ℤ≥‘𝑀) | |
| 14 | 8 | negcld 8432 | . . . . . . 7 ⊢ (𝑀 ∈ ℤ → -𝑀 ∈ ℂ) |
| 15 | ovshftex 11316 | . . . . . . 7 ⊢ (((𝑓 shift 𝑀) ∈ V ∧ -𝑀 ∈ ℂ) → ((𝑓 shift 𝑀) shift -𝑀) ∈ V) | |
| 16 | 10, 14, 15 | syl2anc 411 | . . . . . 6 ⊢ (𝑀 ∈ ℤ → ((𝑓 shift 𝑀) shift -𝑀) ∈ V) |
| 17 | 7 | a1i 9 | . . . . . 6 ⊢ (𝑀 ∈ ℤ → 𝑓 ∈ V) |
| 18 | id 19 | . . . . . 6 ⊢ (𝑀 ∈ ℤ → 𝑀 ∈ ℤ) | |
| 19 | eluzelcn 9721 | . . . . . . 7 ⊢ (𝑘 ∈ (ℤ≥‘𝑀) → 𝑘 ∈ ℂ) | |
| 20 | 7 | shftcan1 11331 | . . . . . . 7 ⊢ ((𝑀 ∈ ℂ ∧ 𝑘 ∈ ℂ) → (((𝑓 shift 𝑀) shift -𝑀)‘𝑘) = (𝑓‘𝑘)) |
| 21 | 8, 19, 20 | syl2an 289 | . . . . . 6 ⊢ ((𝑀 ∈ ℤ ∧ 𝑘 ∈ (ℤ≥‘𝑀)) → (((𝑓 shift 𝑀) shift -𝑀)‘𝑘) = (𝑓‘𝑘)) |
| 22 | 13, 16, 17, 18, 21 | climeq 11796 | . . . . 5 ⊢ (𝑀 ∈ ℤ → (((𝑓 shift 𝑀) shift -𝑀) ⇝ 𝐴 ↔ 𝑓 ⇝ 𝐴)) |
| 23 | 12, 22 | sylibd 149 | . . . 4 ⊢ (𝑀 ∈ ℤ → ((𝑓 shift 𝑀) ⇝ 𝐴 → 𝑓 ⇝ 𝐴)) |
| 24 | climshftlemg 11799 | . . . . 5 ⊢ ((𝑀 ∈ ℤ ∧ 𝑓 ∈ V) → (𝑓 ⇝ 𝐴 → (𝑓 shift 𝑀) ⇝ 𝐴)) | |
| 25 | 7, 24 | mpan2 425 | . . . 4 ⊢ (𝑀 ∈ ℤ → (𝑓 ⇝ 𝐴 → (𝑓 shift 𝑀) ⇝ 𝐴)) |
| 26 | 23, 25 | impbid 129 | . . 3 ⊢ (𝑀 ∈ ℤ → ((𝑓 shift 𝑀) ⇝ 𝐴 ↔ 𝑓 ⇝ 𝐴)) |
| 27 | 5, 26 | vtoclg 2861 | . 2 ⊢ (𝐹 ∈ 𝑉 → (𝑀 ∈ ℤ → ((𝐹 shift 𝑀) ⇝ 𝐴 ↔ 𝐹 ⇝ 𝐴))) |
| 28 | 27 | impcom 125 | 1 ⊢ ((𝑀 ∈ ℤ ∧ 𝐹 ∈ 𝑉) → ((𝐹 shift 𝑀) ⇝ 𝐴 ↔ 𝐹 ⇝ 𝐴)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ↔ wb 105 = wceq 1395 ∈ wcel 2200 Vcvv 2799 class class class wbr 4082 ‘cfv 5314 (class class class)co 5994 ℂcc 7985 -cneg 8306 ℤcz 9434 ℤ≥cuz 9710 shift cshi 11311 ⇝ cli 11775 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 617 ax-in2 618 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-13 2202 ax-14 2203 ax-ext 2211 ax-coll 4198 ax-sep 4201 ax-pow 4257 ax-pr 4292 ax-un 4521 ax-setind 4626 ax-cnex 8078 ax-resscn 8079 ax-1cn 8080 ax-1re 8081 ax-icn 8082 ax-addcl 8083 ax-addrcl 8084 ax-mulcl 8085 ax-addcom 8087 ax-addass 8089 ax-distr 8091 ax-i2m1 8092 ax-0lt1 8093 ax-0id 8095 ax-rnegex 8096 ax-cnre 8098 ax-pre-ltirr 8099 ax-pre-ltwlin 8100 ax-pre-lttrn 8101 ax-pre-apti 8102 ax-pre-ltadd 8103 |
| This theorem depends on definitions: df-bi 117 df-dc 840 df-3or 1003 df-3an 1004 df-tru 1398 df-fal 1401 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ne 2401 df-nel 2496 df-ral 2513 df-rex 2514 df-reu 2515 df-rab 2517 df-v 2801 df-sbc 3029 df-csb 3125 df-dif 3199 df-un 3201 df-in 3203 df-ss 3210 df-if 3603 df-pw 3651 df-sn 3672 df-pr 3673 df-op 3675 df-uni 3888 df-int 3923 df-iun 3966 df-br 4083 df-opab 4145 df-mpt 4146 df-id 4381 df-xp 4722 df-rel 4723 df-cnv 4724 df-co 4725 df-dm 4726 df-rn 4727 df-res 4728 df-ima 4729 df-iota 5274 df-fun 5316 df-fn 5317 df-f 5318 df-f1 5319 df-fo 5320 df-f1o 5321 df-fv 5322 df-riota 5947 df-ov 5997 df-oprab 5998 df-mpo 5999 df-pnf 8171 df-mnf 8172 df-xr 8173 df-ltxr 8174 df-le 8175 df-sub 8307 df-neg 8308 df-inn 9099 df-n0 9358 df-z 9435 df-uz 9711 df-shft 11312 df-clim 11776 |
| This theorem is referenced by: climshft2 11803 iser3shft 11843 eftlub 12187 |
| Copyright terms: Public domain | W3C validator |