Mathbox for Alexander van der Vekens |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > fargshiftfv | Structured version Visualization version GIF version |
Description: If a class is a function, then the values of the "shifted function" correspond to the function values of the class. (Contributed by Alexander van der Vekens, 23-Nov-2017.) |
Ref | Expression |
---|---|
fargshift.g | ⊢ 𝐺 = (𝑥 ∈ (0..^(#‘𝐹)) ↦ (𝐹‘(𝑥 + 1))) |
Ref | Expression |
---|---|
fargshiftfv | ⊢ ((𝑁 ∈ ℕ0 ∧ 𝐹:(1...𝑁)⟶dom 𝐸) → (𝑋 ∈ (0..^𝑁) → (𝐺‘𝑋) = (𝐹‘(𝑋 + 1)))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ffn 6045 | . . . . 5 ⊢ (𝐹:(1...𝑁)⟶dom 𝐸 → 𝐹 Fn (1...𝑁)) | |
2 | fseq1hash 13165 | . . . . . 6 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝐹 Fn (1...𝑁)) → (#‘𝐹) = 𝑁) | |
3 | oveq2 6658 | . . . . . . . . 9 ⊢ (𝑁 = (#‘𝐹) → (0..^𝑁) = (0..^(#‘𝐹))) | |
4 | 3 | eqcoms 2630 | . . . . . . . 8 ⊢ ((#‘𝐹) = 𝑁 → (0..^𝑁) = (0..^(#‘𝐹))) |
5 | 4 | eleq2d 2687 | . . . . . . 7 ⊢ ((#‘𝐹) = 𝑁 → (𝑋 ∈ (0..^𝑁) ↔ 𝑋 ∈ (0..^(#‘𝐹)))) |
6 | 5 | biimpd 219 | . . . . . 6 ⊢ ((#‘𝐹) = 𝑁 → (𝑋 ∈ (0..^𝑁) → 𝑋 ∈ (0..^(#‘𝐹)))) |
7 | 2, 6 | syl 17 | . . . . 5 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝐹 Fn (1...𝑁)) → (𝑋 ∈ (0..^𝑁) → 𝑋 ∈ (0..^(#‘𝐹)))) |
8 | 1, 7 | sylan2 491 | . . . 4 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝐹:(1...𝑁)⟶dom 𝐸) → (𝑋 ∈ (0..^𝑁) → 𝑋 ∈ (0..^(#‘𝐹)))) |
9 | 8 | imp 445 | . . 3 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝐹:(1...𝑁)⟶dom 𝐸) ∧ 𝑋 ∈ (0..^𝑁)) → 𝑋 ∈ (0..^(#‘𝐹))) |
10 | fvex 6201 | . . 3 ⊢ (𝐹‘(𝑋 + 1)) ∈ V | |
11 | oveq1 6657 | . . . . 5 ⊢ (𝑥 = 𝑋 → (𝑥 + 1) = (𝑋 + 1)) | |
12 | 11 | fveq2d 6195 | . . . 4 ⊢ (𝑥 = 𝑋 → (𝐹‘(𝑥 + 1)) = (𝐹‘(𝑋 + 1))) |
13 | fargshift.g | . . . 4 ⊢ 𝐺 = (𝑥 ∈ (0..^(#‘𝐹)) ↦ (𝐹‘(𝑥 + 1))) | |
14 | 12, 13 | fvmptg 6280 | . . 3 ⊢ ((𝑋 ∈ (0..^(#‘𝐹)) ∧ (𝐹‘(𝑋 + 1)) ∈ V) → (𝐺‘𝑋) = (𝐹‘(𝑋 + 1))) |
15 | 9, 10, 14 | sylancl 694 | . 2 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝐹:(1...𝑁)⟶dom 𝐸) ∧ 𝑋 ∈ (0..^𝑁)) → (𝐺‘𝑋) = (𝐹‘(𝑋 + 1))) |
16 | 15 | ex 450 | 1 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝐹:(1...𝑁)⟶dom 𝐸) → (𝑋 ∈ (0..^𝑁) → (𝐺‘𝑋) = (𝐹‘(𝑋 + 1)))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 384 = wceq 1483 ∈ wcel 1990 Vcvv 3200 ↦ cmpt 4729 dom cdm 5114 Fn wfn 5883 ⟶wf 5884 ‘cfv 5888 (class class class)co 6650 0cc0 9936 1c1 9937 + caddc 9939 ℕ0cn0 11292 ...cfz 12326 ..^cfzo 12465 #chash 13117 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-8 1992 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-rep 4771 ax-sep 4781 ax-nul 4789 ax-pow 4843 ax-pr 4906 ax-un 6949 ax-cnex 9992 ax-resscn 9993 ax-1cn 9994 ax-icn 9995 ax-addcl 9996 ax-addrcl 9997 ax-mulcl 9998 ax-mulrcl 9999 ax-mulcom 10000 ax-addass 10001 ax-mulass 10002 ax-distr 10003 ax-i2m1 10004 ax-1ne0 10005 ax-1rid 10006 ax-rnegex 10007 ax-rrecex 10008 ax-cnre 10009 ax-pre-lttri 10010 ax-pre-lttrn 10011 ax-pre-ltadd 10012 ax-pre-mulgt0 10013 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3or 1038 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ne 2795 df-nel 2898 df-ral 2917 df-rex 2918 df-reu 2919 df-rab 2921 df-v 3202 df-sbc 3436 df-csb 3534 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-pss 3590 df-nul 3916 df-if 4087 df-pw 4160 df-sn 4178 df-pr 4180 df-tp 4182 df-op 4184 df-uni 4437 df-int 4476 df-iun 4522 df-br 4654 df-opab 4713 df-mpt 4730 df-tr 4753 df-id 5024 df-eprel 5029 df-po 5035 df-so 5036 df-fr 5073 df-we 5075 df-xp 5120 df-rel 5121 df-cnv 5122 df-co 5123 df-dm 5124 df-rn 5125 df-res 5126 df-ima 5127 df-pred 5680 df-ord 5726 df-on 5727 df-lim 5728 df-suc 5729 df-iota 5851 df-fun 5890 df-fn 5891 df-f 5892 df-f1 5893 df-fo 5894 df-f1o 5895 df-fv 5896 df-riota 6611 df-ov 6653 df-oprab 6654 df-mpt2 6655 df-om 7066 df-1st 7168 df-2nd 7169 df-wrecs 7407 df-recs 7468 df-rdg 7506 df-1o 7560 df-er 7742 df-en 7956 df-dom 7957 df-sdom 7958 df-fin 7959 df-card 8765 df-pnf 10076 df-mnf 10077 df-xr 10078 df-ltxr 10079 df-le 10080 df-sub 10268 df-neg 10269 df-nn 11021 df-n0 11293 df-z 11378 df-uz 11688 df-fz 12327 df-hash 13118 |
This theorem is referenced by: fargshiftf1 41377 fargshiftfva 41379 |
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