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Mirrors > Home > MPE Home > Th. List > seqfeq2 | Structured version Visualization version GIF version |
Description: Equality of sequences. (Contributed by Mario Carneiro, 13-Jul-2013.) (Revised by Mario Carneiro, 27-May-2014.) |
Ref | Expression |
---|---|
seqfveq2.1 | ⊢ (𝜑 → 𝐾 ∈ (ℤ≥‘𝑀)) |
seqfveq2.2 | ⊢ (𝜑 → (seq𝑀( + , 𝐹)‘𝐾) = (𝐺‘𝐾)) |
seqfeq2.4 | ⊢ ((𝜑 ∧ 𝑘 ∈ (ℤ≥‘(𝐾 + 1))) → (𝐹‘𝑘) = (𝐺‘𝑘)) |
Ref | Expression |
---|---|
seqfeq2 | ⊢ (𝜑 → (seq𝑀( + , 𝐹) ↾ (ℤ≥‘𝐾)) = seq𝐾( + , 𝐺)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | seqfveq2.1 | . . . 4 ⊢ (𝜑 → 𝐾 ∈ (ℤ≥‘𝑀)) | |
2 | eluzel2 12443 | . . . 4 ⊢ (𝐾 ∈ (ℤ≥‘𝑀) → 𝑀 ∈ ℤ) | |
3 | seqfn 13586 | . . . 4 ⊢ (𝑀 ∈ ℤ → seq𝑀( + , 𝐹) Fn (ℤ≥‘𝑀)) | |
4 | 1, 2, 3 | 3syl 18 | . . 3 ⊢ (𝜑 → seq𝑀( + , 𝐹) Fn (ℤ≥‘𝑀)) |
5 | uzss 12461 | . . . 4 ⊢ (𝐾 ∈ (ℤ≥‘𝑀) → (ℤ≥‘𝐾) ⊆ (ℤ≥‘𝑀)) | |
6 | 1, 5 | syl 17 | . . 3 ⊢ (𝜑 → (ℤ≥‘𝐾) ⊆ (ℤ≥‘𝑀)) |
7 | fnssres 6500 | . . 3 ⊢ ((seq𝑀( + , 𝐹) Fn (ℤ≥‘𝑀) ∧ (ℤ≥‘𝐾) ⊆ (ℤ≥‘𝑀)) → (seq𝑀( + , 𝐹) ↾ (ℤ≥‘𝐾)) Fn (ℤ≥‘𝐾)) | |
8 | 4, 6, 7 | syl2anc 587 | . 2 ⊢ (𝜑 → (seq𝑀( + , 𝐹) ↾ (ℤ≥‘𝐾)) Fn (ℤ≥‘𝐾)) |
9 | eluzelz 12448 | . . 3 ⊢ (𝐾 ∈ (ℤ≥‘𝑀) → 𝐾 ∈ ℤ) | |
10 | seqfn 13586 | . . 3 ⊢ (𝐾 ∈ ℤ → seq𝐾( + , 𝐺) Fn (ℤ≥‘𝐾)) | |
11 | 1, 9, 10 | 3syl 18 | . 2 ⊢ (𝜑 → seq𝐾( + , 𝐺) Fn (ℤ≥‘𝐾)) |
12 | fvres 6736 | . . . 4 ⊢ (𝑥 ∈ (ℤ≥‘𝐾) → ((seq𝑀( + , 𝐹) ↾ (ℤ≥‘𝐾))‘𝑥) = (seq𝑀( + , 𝐹)‘𝑥)) | |
13 | 12 | adantl 485 | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ (ℤ≥‘𝐾)) → ((seq𝑀( + , 𝐹) ↾ (ℤ≥‘𝐾))‘𝑥) = (seq𝑀( + , 𝐹)‘𝑥)) |
14 | 1 | adantr 484 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ (ℤ≥‘𝐾)) → 𝐾 ∈ (ℤ≥‘𝑀)) |
15 | seqfveq2.2 | . . . . 5 ⊢ (𝜑 → (seq𝑀( + , 𝐹)‘𝐾) = (𝐺‘𝐾)) | |
16 | 15 | adantr 484 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ (ℤ≥‘𝐾)) → (seq𝑀( + , 𝐹)‘𝐾) = (𝐺‘𝐾)) |
17 | simpr 488 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ (ℤ≥‘𝐾)) → 𝑥 ∈ (ℤ≥‘𝐾)) | |
18 | elfzuz 13108 | . . . . . 6 ⊢ (𝑘 ∈ ((𝐾 + 1)...𝑥) → 𝑘 ∈ (ℤ≥‘(𝐾 + 1))) | |
19 | seqfeq2.4 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ (ℤ≥‘(𝐾 + 1))) → (𝐹‘𝑘) = (𝐺‘𝑘)) | |
20 | 18, 19 | sylan2 596 | . . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ ((𝐾 + 1)...𝑥)) → (𝐹‘𝑘) = (𝐺‘𝑘)) |
21 | 20 | adantlr 715 | . . . 4 ⊢ (((𝜑 ∧ 𝑥 ∈ (ℤ≥‘𝐾)) ∧ 𝑘 ∈ ((𝐾 + 1)...𝑥)) → (𝐹‘𝑘) = (𝐺‘𝑘)) |
22 | 14, 16, 17, 21 | seqfveq2 13598 | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ (ℤ≥‘𝐾)) → (seq𝑀( + , 𝐹)‘𝑥) = (seq𝐾( + , 𝐺)‘𝑥)) |
23 | 13, 22 | eqtrd 2777 | . 2 ⊢ ((𝜑 ∧ 𝑥 ∈ (ℤ≥‘𝐾)) → ((seq𝑀( + , 𝐹) ↾ (ℤ≥‘𝐾))‘𝑥) = (seq𝐾( + , 𝐺)‘𝑥)) |
24 | 8, 11, 23 | eqfnfvd 6855 | 1 ⊢ (𝜑 → (seq𝑀( + , 𝐹) ↾ (ℤ≥‘𝐾)) = seq𝐾( + , 𝐺)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 399 = wceq 1543 ∈ wcel 2110 ⊆ wss 3866 ↾ cres 5553 Fn wfn 6375 ‘cfv 6380 (class class class)co 7213 1c1 10730 + caddc 10732 ℤcz 12176 ℤ≥cuz 12438 ...cfz 13095 seqcseq 13574 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2016 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2158 ax-12 2175 ax-ext 2708 ax-sep 5192 ax-nul 5199 ax-pow 5258 ax-pr 5322 ax-un 7523 ax-cnex 10785 ax-resscn 10786 ax-1cn 10787 ax-icn 10788 ax-addcl 10789 ax-addrcl 10790 ax-mulcl 10791 ax-mulrcl 10792 ax-mulcom 10793 ax-addass 10794 ax-mulass 10795 ax-distr 10796 ax-i2m1 10797 ax-1ne0 10798 ax-1rid 10799 ax-rnegex 10800 ax-rrecex 10801 ax-cnre 10802 ax-pre-lttri 10803 ax-pre-lttrn 10804 ax-pre-ltadd 10805 ax-pre-mulgt0 10806 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-3or 1090 df-3an 1091 df-tru 1546 df-fal 1556 df-ex 1788 df-nf 1792 df-sb 2071 df-mo 2539 df-eu 2568 df-clab 2715 df-cleq 2729 df-clel 2816 df-nfc 2886 df-ne 2941 df-nel 3047 df-ral 3066 df-rex 3067 df-reu 3068 df-rab 3070 df-v 3410 df-sbc 3695 df-csb 3812 df-dif 3869 df-un 3871 df-in 3873 df-ss 3883 df-pss 3885 df-nul 4238 df-if 4440 df-pw 4515 df-sn 4542 df-pr 4544 df-tp 4546 df-op 4548 df-uni 4820 df-iun 4906 df-br 5054 df-opab 5116 df-mpt 5136 df-tr 5162 df-id 5455 df-eprel 5460 df-po 5468 df-so 5469 df-fr 5509 df-we 5511 df-xp 5557 df-rel 5558 df-cnv 5559 df-co 5560 df-dm 5561 df-rn 5562 df-res 5563 df-ima 5564 df-pred 6160 df-ord 6216 df-on 6217 df-lim 6218 df-suc 6219 df-iota 6338 df-fun 6382 df-fn 6383 df-f 6384 df-f1 6385 df-fo 6386 df-f1o 6387 df-fv 6388 df-riota 7170 df-ov 7216 df-oprab 7217 df-mpo 7218 df-om 7645 df-1st 7761 df-2nd 7762 df-wrecs 8047 df-recs 8108 df-rdg 8146 df-er 8391 df-en 8627 df-dom 8628 df-sdom 8629 df-pnf 10869 df-mnf 10870 df-xr 10871 df-ltxr 10872 df-le 10873 df-sub 11064 df-neg 11065 df-nn 11831 df-n0 12091 df-z 12177 df-uz 12439 df-fz 13096 df-seq 13575 |
This theorem is referenced by: seqid 13621 |
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