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Mirrors > Home > ILE Home > Th. List > seq3feq | GIF version |
Description: Equality of sequences. (Contributed by Jim Kingdon, 15-Aug-2021.) (Revised by Jim Kingdon, 7-Apr-2023.) |
Ref | Expression |
---|---|
seq3feq.1 | ⊢ (𝜑 → 𝑀 ∈ ℤ) |
seq3feq.f | ⊢ ((𝜑 ∧ 𝑥 ∈ (ℤ≥‘𝑀)) → (𝐹‘𝑥) ∈ 𝑆) |
seq3feq.2 | ⊢ ((𝜑 ∧ 𝑘 ∈ (ℤ≥‘𝑀)) → (𝐹‘𝑘) = (𝐺‘𝑘)) |
seq3feq.pl | ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥 + 𝑦) ∈ 𝑆) |
Ref | Expression |
---|---|
seq3feq | ⊢ (𝜑 → seq𝑀( + , 𝐹) = seq𝑀( + , 𝐺)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqid 2170 | . . . 4 ⊢ (ℤ≥‘𝑀) = (ℤ≥‘𝑀) | |
2 | seq3feq.1 | . . . 4 ⊢ (𝜑 → 𝑀 ∈ ℤ) | |
3 | seq3feq.f | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ (ℤ≥‘𝑀)) → (𝐹‘𝑥) ∈ 𝑆) | |
4 | seq3feq.pl | . . . 4 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥 + 𝑦) ∈ 𝑆) | |
5 | 1, 2, 3, 4 | seqf 10417 | . . 3 ⊢ (𝜑 → seq𝑀( + , 𝐹):(ℤ≥‘𝑀)⟶𝑆) |
6 | 5 | ffnd 5348 | . 2 ⊢ (𝜑 → seq𝑀( + , 𝐹) Fn (ℤ≥‘𝑀)) |
7 | fveq2 5496 | . . . . . . 7 ⊢ (𝑘 = 𝑥 → (𝐹‘𝑘) = (𝐹‘𝑥)) | |
8 | fveq2 5496 | . . . . . . 7 ⊢ (𝑘 = 𝑥 → (𝐺‘𝑘) = (𝐺‘𝑥)) | |
9 | 7, 8 | eqeq12d 2185 | . . . . . 6 ⊢ (𝑘 = 𝑥 → ((𝐹‘𝑘) = (𝐺‘𝑘) ↔ (𝐹‘𝑥) = (𝐺‘𝑥))) |
10 | seq3feq.2 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑘 ∈ (ℤ≥‘𝑀)) → (𝐹‘𝑘) = (𝐺‘𝑘)) | |
11 | 10 | ralrimiva 2543 | . . . . . . 7 ⊢ (𝜑 → ∀𝑘 ∈ (ℤ≥‘𝑀)(𝐹‘𝑘) = (𝐺‘𝑘)) |
12 | 11 | adantr 274 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (ℤ≥‘𝑀)) → ∀𝑘 ∈ (ℤ≥‘𝑀)(𝐹‘𝑘) = (𝐺‘𝑘)) |
13 | simpr 109 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (ℤ≥‘𝑀)) → 𝑥 ∈ (ℤ≥‘𝑀)) | |
14 | 9, 12, 13 | rspcdva 2839 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ (ℤ≥‘𝑀)) → (𝐹‘𝑥) = (𝐺‘𝑥)) |
15 | 14, 3 | eqeltrrd 2248 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ (ℤ≥‘𝑀)) → (𝐺‘𝑥) ∈ 𝑆) |
16 | 1, 2, 15, 4 | seqf 10417 | . . 3 ⊢ (𝜑 → seq𝑀( + , 𝐺):(ℤ≥‘𝑀)⟶𝑆) |
17 | 16 | ffnd 5348 | . 2 ⊢ (𝜑 → seq𝑀( + , 𝐺) Fn (ℤ≥‘𝑀)) |
18 | simpr 109 | . . 3 ⊢ ((𝜑 ∧ 𝑧 ∈ (ℤ≥‘𝑀)) → 𝑧 ∈ (ℤ≥‘𝑀)) | |
19 | simpll 524 | . . . 4 ⊢ (((𝜑 ∧ 𝑧 ∈ (ℤ≥‘𝑀)) ∧ 𝑘 ∈ (𝑀...𝑧)) → 𝜑) | |
20 | elfzuz 9977 | . . . . 5 ⊢ (𝑘 ∈ (𝑀...𝑧) → 𝑘 ∈ (ℤ≥‘𝑀)) | |
21 | 20 | adantl 275 | . . . 4 ⊢ (((𝜑 ∧ 𝑧 ∈ (ℤ≥‘𝑀)) ∧ 𝑘 ∈ (𝑀...𝑧)) → 𝑘 ∈ (ℤ≥‘𝑀)) |
22 | 19, 21, 10 | syl2anc 409 | . . 3 ⊢ (((𝜑 ∧ 𝑧 ∈ (ℤ≥‘𝑀)) ∧ 𝑘 ∈ (𝑀...𝑧)) → (𝐹‘𝑘) = (𝐺‘𝑘)) |
23 | 3 | adantlr 474 | . . 3 ⊢ (((𝜑 ∧ 𝑧 ∈ (ℤ≥‘𝑀)) ∧ 𝑥 ∈ (ℤ≥‘𝑀)) → (𝐹‘𝑥) ∈ 𝑆) |
24 | 15 | adantlr 474 | . . 3 ⊢ (((𝜑 ∧ 𝑧 ∈ (ℤ≥‘𝑀)) ∧ 𝑥 ∈ (ℤ≥‘𝑀)) → (𝐺‘𝑥) ∈ 𝑆) |
25 | 4 | adantlr 474 | . . 3 ⊢ (((𝜑 ∧ 𝑧 ∈ (ℤ≥‘𝑀)) ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥 + 𝑦) ∈ 𝑆) |
26 | 18, 22, 23, 24, 25 | seq3fveq 10427 | . 2 ⊢ ((𝜑 ∧ 𝑧 ∈ (ℤ≥‘𝑀)) → (seq𝑀( + , 𝐹)‘𝑧) = (seq𝑀( + , 𝐺)‘𝑧)) |
27 | 6, 17, 26 | eqfnfvd 5596 | 1 ⊢ (𝜑 → seq𝑀( + , 𝐹) = seq𝑀( + , 𝐺)) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 103 = wceq 1348 ∈ wcel 2141 ∀wral 2448 ‘cfv 5198 (class class class)co 5853 ℤcz 9212 ℤ≥cuz 9487 ...cfz 9965 seqcseq 10401 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 609 ax-in2 610 ax-io 704 ax-5 1440 ax-7 1441 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-8 1497 ax-10 1498 ax-11 1499 ax-i12 1500 ax-bndl 1502 ax-4 1503 ax-17 1519 ax-i9 1523 ax-ial 1527 ax-i5r 1528 ax-13 2143 ax-14 2144 ax-ext 2152 ax-coll 4104 ax-sep 4107 ax-nul 4115 ax-pow 4160 ax-pr 4194 ax-un 4418 ax-setind 4521 ax-iinf 4572 ax-cnex 7865 ax-resscn 7866 ax-1cn 7867 ax-1re 7868 ax-icn 7869 ax-addcl 7870 ax-addrcl 7871 ax-mulcl 7872 ax-addcom 7874 ax-addass 7876 ax-distr 7878 ax-i2m1 7879 ax-0lt1 7880 ax-0id 7882 ax-rnegex 7883 ax-cnre 7885 ax-pre-ltirr 7886 ax-pre-ltwlin 7887 ax-pre-lttrn 7888 ax-pre-ltadd 7890 |
This theorem depends on definitions: df-bi 116 df-3or 974 df-3an 975 df-tru 1351 df-fal 1354 df-nf 1454 df-sb 1756 df-eu 2022 df-mo 2023 df-clab 2157 df-cleq 2163 df-clel 2166 df-nfc 2301 df-ne 2341 df-nel 2436 df-ral 2453 df-rex 2454 df-reu 2455 df-rab 2457 df-v 2732 df-sbc 2956 df-csb 3050 df-dif 3123 df-un 3125 df-in 3127 df-ss 3134 df-nul 3415 df-pw 3568 df-sn 3589 df-pr 3590 df-op 3592 df-uni 3797 df-int 3832 df-iun 3875 df-br 3990 df-opab 4051 df-mpt 4052 df-tr 4088 df-id 4278 df-iord 4351 df-on 4353 df-ilim 4354 df-suc 4356 df-iom 4575 df-xp 4617 df-rel 4618 df-cnv 4619 df-co 4620 df-dm 4621 df-rn 4622 df-res 4623 df-ima 4624 df-iota 5160 df-fun 5200 df-fn 5201 df-f 5202 df-f1 5203 df-fo 5204 df-f1o 5205 df-fv 5206 df-riota 5809 df-ov 5856 df-oprab 5857 df-mpo 5858 df-1st 6119 df-2nd 6120 df-recs 6284 df-frec 6370 df-pnf 7956 df-mnf 7957 df-xr 7958 df-ltxr 7959 df-le 7960 df-sub 8092 df-neg 8093 df-inn 8879 df-n0 9136 df-z 9213 df-uz 9488 df-fz 9966 df-seqfrec 10402 |
This theorem is referenced by: zsumdc 11347 fsum3cvg2 11357 isumshft 11453 geolim2 11475 cvgratz 11495 mertenslem2 11499 zproddc 11542 |
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