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Mirrors > Home > MPE Home > Th. List > shftcan1 | Structured version Visualization version 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 10929 | . . . . 5 ⊢ (𝐴 ∈ ℂ → -𝐴 ∈ ℂ) | |
2 | shftfval.1 | . . . . . 6 ⊢ 𝐹 ∈ V | |
3 | 2 | 2shfti 14492 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ -𝐴 ∈ ℂ) → ((𝐹 shift 𝐴) shift -𝐴) = (𝐹 shift (𝐴 + -𝐴))) |
4 | 1, 3 | mpdan 686 | . . . 4 ⊢ (𝐴 ∈ ℂ → ((𝐹 shift 𝐴) shift -𝐴) = (𝐹 shift (𝐴 + -𝐴))) |
5 | negid 10976 | . . . . 5 ⊢ (𝐴 ∈ ℂ → (𝐴 + -𝐴) = 0) | |
6 | 5 | oveq2d 7171 | . . . 4 ⊢ (𝐴 ∈ ℂ → (𝐹 shift (𝐴 + -𝐴)) = (𝐹 shift 0)) |
7 | 4, 6 | eqtrd 2793 | . . 3 ⊢ (𝐴 ∈ ℂ → ((𝐹 shift 𝐴) shift -𝐴) = (𝐹 shift 0)) |
8 | 7 | fveq1d 6664 | . 2 ⊢ (𝐴 ∈ ℂ → (((𝐹 shift 𝐴) shift -𝐴)‘𝐵) = ((𝐹 shift 0)‘𝐵)) |
9 | 2 | shftidt 14494 | . 2 ⊢ (𝐵 ∈ ℂ → ((𝐹 shift 0)‘𝐵) = (𝐹‘𝐵)) |
10 | 8, 9 | sylan9eq 2813 | 1 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (((𝐹 shift 𝐴) shift -𝐴)‘𝐵) = (𝐹‘𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 399 = wceq 1538 ∈ wcel 2111 Vcvv 3409 ‘cfv 6339 (class class class)co 7155 ℂcc 10578 0cc0 10580 + caddc 10583 -cneg 10914 shift cshi 14478 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2729 ax-rep 5159 ax-sep 5172 ax-nul 5179 ax-pow 5237 ax-pr 5301 ax-un 7464 ax-resscn 10637 ax-1cn 10638 ax-icn 10639 ax-addcl 10640 ax-addrcl 10641 ax-mulcl 10642 ax-mulrcl 10643 ax-mulcom 10644 ax-addass 10645 ax-mulass 10646 ax-distr 10647 ax-i2m1 10648 ax-1ne0 10649 ax-1rid 10650 ax-rnegex 10651 ax-rrecex 10652 ax-cnre 10653 ax-pre-lttri 10654 ax-pre-lttrn 10655 ax-pre-ltadd 10656 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1085 df-3an 1086 df-tru 1541 df-fal 1551 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2557 df-eu 2588 df-clab 2736 df-cleq 2750 df-clel 2830 df-nfc 2901 df-ne 2952 df-nel 3056 df-ral 3075 df-rex 3076 df-reu 3077 df-rab 3079 df-v 3411 df-sbc 3699 df-csb 3808 df-dif 3863 df-un 3865 df-in 3867 df-ss 3877 df-nul 4228 df-if 4424 df-pw 4499 df-sn 4526 df-pr 4528 df-op 4532 df-uni 4802 df-iun 4888 df-br 5036 df-opab 5098 df-mpt 5116 df-id 5433 df-po 5446 df-so 5447 df-xp 5533 df-rel 5534 df-cnv 5535 df-co 5536 df-dm 5537 df-rn 5538 df-res 5539 df-ima 5540 df-iota 6298 df-fun 6341 df-fn 6342 df-f 6343 df-f1 6344 df-fo 6345 df-f1o 6346 df-fv 6347 df-riota 7113 df-ov 7158 df-oprab 7159 df-mpo 7160 df-er 8304 df-en 8533 df-dom 8534 df-sdom 8535 df-pnf 10720 df-mnf 10721 df-ltxr 10723 df-sub 10915 df-neg 10916 df-shft 14479 |
This theorem is referenced by: shftcan2 14496 climshft 14986 |
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