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| Mirrors > Home > ILE Home > Th. List > seq1cd | GIF version | ||
| Description: Initial value of the recursive sequence builder. A version of seq3-1 10605 which provides two classes 𝐷 and 𝐶 for the terms and the value being accumulated, respectively. (Contributed by Jim Kingdon, 19-Jul-2023.) |
| Ref | Expression |
|---|---|
| seq1cd.1 | ⊢ (𝜑 → (𝐹‘𝑀) ∈ 𝐶) |
| seq1cd.2 | ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐶 ∧ 𝑦 ∈ 𝐷)) → (𝑥 + 𝑦) ∈ 𝐶) |
| seq1cd.4 | ⊢ (𝜑 → 𝑀 ∈ ℤ) |
| seq1cd.5 | ⊢ ((𝜑 ∧ 𝑥 ∈ (ℤ≥‘(𝑀 + 1))) → (𝐹‘𝑥) ∈ 𝐷) |
| Ref | Expression |
|---|---|
| seq1cd | ⊢ (𝜑 → (seq𝑀( + , 𝐹)‘𝑀) = (𝐹‘𝑀)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | seq1cd.4 | . 2 ⊢ (𝜑 → 𝑀 ∈ ℤ) | |
| 2 | seq1cd.1 | . 2 ⊢ (𝜑 → (𝐹‘𝑀) ∈ 𝐶) | |
| 3 | ssv 3214 | . . 3 ⊢ 𝐶 ⊆ V | |
| 4 | 3 | a1i 9 | . 2 ⊢ (𝜑 → 𝐶 ⊆ V) |
| 5 | seq1cd.5 | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ (ℤ≥‘(𝑀 + 1))) → (𝐹‘𝑥) ∈ 𝐷) | |
| 6 | seq1cd.2 | . . 3 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐶 ∧ 𝑦 ∈ 𝐷)) → (𝑥 + 𝑦) ∈ 𝐶) | |
| 7 | 5, 6 | seqovcd 10610 | . 2 ⊢ ((𝜑 ∧ (𝑥 ∈ (ℤ≥‘𝑀) ∧ 𝑦 ∈ 𝐶)) → (𝑥(𝑧 ∈ (ℤ≥‘𝑀), 𝑤 ∈ 𝐶 ↦ (𝑤 + (𝐹‘(𝑧 + 1))))𝑦) ∈ 𝐶) |
| 8 | iseqvalcbv 10602 | . 2 ⊢ frec((𝑠 ∈ (ℤ≥‘𝑀), 𝑡 ∈ V ↦ 〈(𝑠 + 1), (𝑠(𝑢 ∈ (ℤ≥‘𝑀), 𝑣 ∈ 𝐶 ↦ (𝑣 + (𝐹‘(𝑢 + 1))))𝑡)〉), 〈𝑀, (𝐹‘𝑀)〉) = frec((𝑥 ∈ (ℤ≥‘𝑀), 𝑦 ∈ V ↦ 〈(𝑥 + 1), (𝑥(𝑧 ∈ (ℤ≥‘𝑀), 𝑤 ∈ 𝐶 ↦ (𝑤 + (𝐹‘(𝑧 + 1))))𝑦)〉), 〈𝑀, (𝐹‘𝑀)〉) | |
| 9 | 1, 8, 2, 6, 5 | seqvalcd 10604 | . 2 ⊢ (𝜑 → seq𝑀( + , 𝐹) = ran frec((𝑠 ∈ (ℤ≥‘𝑀), 𝑡 ∈ V ↦ 〈(𝑠 + 1), (𝑠(𝑢 ∈ (ℤ≥‘𝑀), 𝑣 ∈ 𝐶 ↦ (𝑣 + (𝐹‘(𝑢 + 1))))𝑡)〉), 〈𝑀, (𝐹‘𝑀)〉)) |
| 10 | 1, 2, 4, 7, 8, 9 | frecuzrdg0t 10565 | 1 ⊢ (𝜑 → (seq𝑀( + , 𝐹)‘𝑀) = (𝐹‘𝑀)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 = wceq 1372 ∈ wcel 2175 Vcvv 2771 ⊆ wss 3165 〈cop 3635 ‘cfv 5270 (class class class)co 5943 ∈ cmpo 5945 freccfrec 6475 1c1 7925 + caddc 7927 ℤcz 9371 ℤ≥cuz 9647 seqcseq 10590 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 615 ax-in2 616 ax-io 710 ax-5 1469 ax-7 1470 ax-gen 1471 ax-ie1 1515 ax-ie2 1516 ax-8 1526 ax-10 1527 ax-11 1528 ax-i12 1529 ax-bndl 1531 ax-4 1532 ax-17 1548 ax-i9 1552 ax-ial 1556 ax-i5r 1557 ax-13 2177 ax-14 2178 ax-ext 2186 ax-coll 4158 ax-sep 4161 ax-nul 4169 ax-pow 4217 ax-pr 4252 ax-un 4479 ax-setind 4584 ax-iinf 4635 ax-cnex 8015 ax-resscn 8016 ax-1cn 8017 ax-1re 8018 ax-icn 8019 ax-addcl 8020 ax-addrcl 8021 ax-mulcl 8022 ax-addcom 8024 ax-addass 8026 ax-distr 8028 ax-i2m1 8029 ax-0lt1 8030 ax-0id 8032 ax-rnegex 8033 ax-cnre 8035 ax-pre-ltirr 8036 ax-pre-ltwlin 8037 ax-pre-lttrn 8038 ax-pre-ltadd 8040 |
| This theorem depends on definitions: df-bi 117 df-3or 981 df-3an 982 df-tru 1375 df-fal 1378 df-nf 1483 df-sb 1785 df-eu 2056 df-mo 2057 df-clab 2191 df-cleq 2197 df-clel 2200 df-nfc 2336 df-ne 2376 df-nel 2471 df-ral 2488 df-rex 2489 df-reu 2490 df-rab 2492 df-v 2773 df-sbc 2998 df-csb 3093 df-dif 3167 df-un 3169 df-in 3171 df-ss 3178 df-nul 3460 df-pw 3617 df-sn 3638 df-pr 3639 df-op 3641 df-uni 3850 df-int 3885 df-iun 3928 df-br 4044 df-opab 4105 df-mpt 4106 df-tr 4142 df-id 4339 df-iord 4412 df-on 4414 df-ilim 4415 df-suc 4417 df-iom 4638 df-xp 4680 df-rel 4681 df-cnv 4682 df-co 4683 df-dm 4684 df-rn 4685 df-res 4686 df-ima 4687 df-iota 5231 df-fun 5272 df-fn 5273 df-f 5274 df-f1 5275 df-fo 5276 df-f1o 5277 df-fv 5278 df-riota 5898 df-ov 5946 df-oprab 5947 df-mpo 5948 df-1st 6225 df-2nd 6226 df-recs 6390 df-frec 6476 df-pnf 8108 df-mnf 8109 df-xr 8110 df-ltxr 8111 df-le 8112 df-sub 8244 df-neg 8245 df-inn 9036 df-n0 9295 df-z 9372 df-uz 9648 df-seqfrec 10591 |
| This theorem is referenced by: ennnfonelem0 12718 |
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