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| Mirrors > Home > ILE Home > Th. List > shftcan1 | GIF version | ||
| Description: Cancellation law for the shift operation. (Contributed by NM, 4-Aug-2005.) (Revised by Mario Carneiro, 5-Nov-2013.) |
| Ref | Expression |
|---|---|
| shftfval.1 | ⊢ 𝐹 ∈ V |
| Ref | Expression |
|---|---|
| shftcan1 | ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (((𝐹 shift 𝐴) shift -𝐴)‘𝐵) = (𝐹‘𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | negcl 8526 | . . . . 5 ⊢ (𝐴 ∈ ℂ → -𝐴 ∈ ℂ) | |
| 2 | shftfval.1 | . . . . . 6 ⊢ 𝐹 ∈ V | |
| 3 | 2 | 2shfti 11596 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ -𝐴 ∈ ℂ) → ((𝐹 shift 𝐴) shift -𝐴) = (𝐹 shift (𝐴 + -𝐴))) |
| 4 | 1, 3 | mpdan 425 | . . . 4 ⊢ (𝐴 ∈ ℂ → ((𝐹 shift 𝐴) shift -𝐴) = (𝐹 shift (𝐴 + -𝐴))) |
| 5 | negid 8573 | . . . . 5 ⊢ (𝐴 ∈ ℂ → (𝐴 + -𝐴) = 0) | |
| 6 | 5 | oveq2d 6101 | . . . 4 ⊢ (𝐴 ∈ ℂ → (𝐹 shift (𝐴 + -𝐴)) = (𝐹 shift 0)) |
| 7 | 4, 6 | eqtrd 2271 | . . 3 ⊢ (𝐴 ∈ ℂ → ((𝐹 shift 𝐴) shift -𝐴) = (𝐹 shift 0)) |
| 8 | 7 | fveq1d 5697 | . 2 ⊢ (𝐴 ∈ ℂ → (((𝐹 shift 𝐴) shift -𝐴)‘𝐵) = ((𝐹 shift 0)‘𝐵)) |
| 9 | 2 | shftidt 11598 | . 2 ⊢ (𝐵 ∈ ℂ → ((𝐹 shift 0)‘𝐵) = (𝐹‘𝐵)) |
| 10 | 8, 9 | sylan9eq 2291 | 1 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (((𝐹 shift 𝐴) shift -𝐴)‘𝐵) = (𝐹‘𝐵)) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 104 = wceq 1402 ∈ wcel 2209 Vcvv 2821 ‘cfv 5377 (class class class)co 6085 ℂcc 8177 0cc0 8179 + caddc 8182 -cneg 8498 shift cshi 11579 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-coll 4246 ax-sep 4249 ax-pow 4311 ax-pr 4346 ax-un 4578 ax-setind 4684 ax-cnex 8270 ax-resscn 8271 ax-1cn 8272 ax-icn 8274 ax-addcl 8275 ax-addrcl 8276 ax-mulcl 8277 ax-addcom 8279 ax-addass 8281 ax-distr 8283 ax-i2m1 8284 ax-0id 8287 ax-rnegex 8288 ax-cnre 8290 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-ral 2533 df-rex 2534 df-reu 2535 df-rab 2537 df-v 2823 df-sbc 3052 df-csb 3148 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-iun 4014 df-br 4131 df-opab 4193 df-mpt 4194 df-id 4438 df-xp 4780 df-rel 4781 df-cnv 4782 df-co 4783 df-dm 4784 df-rn 4785 df-res 4786 df-ima 4787 df-iota 5337 df-fun 5379 df-fn 5380 df-f 5381 df-f1 5382 df-fo 5383 df-f1o 5384 df-fv 5385 df-riota 6038 df-ov 6088 df-oprab 6089 df-mpo 6090 df-sub 8499 df-neg 8500 df-shft 11580 |
| This theorem is used by: shftcan2 11600 climshft 12070 |
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