| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > seq3m1 | GIF version | ||
| Description: Value of the sequence builder function at a successor. (Contributed by Mario Carneiro, 24-Jun-2013.) (Revised by Jim Kingdon, 3-Nov-2022.) |
| Ref | Expression |
|---|---|
| seq3m1.m | ⊢ (𝜑 → 𝑀 ∈ ℤ) |
| seq3m1.n | ⊢ (𝜑 → 𝑁 ∈ (ℤ≥‘(𝑀 + 1))) |
| seq3m1.f | ⊢ ((𝜑 ∧ 𝑥 ∈ (ℤ≥‘𝑀)) → (𝐹‘𝑥) ∈ 𝑆) |
| seq3m1.pl | ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥 + 𝑦) ∈ 𝑆) |
| Ref | Expression |
|---|---|
| seq3m1 | ⊢ (𝜑 → (seq𝑀( + , 𝐹)‘𝑁) = ((seq𝑀( + , 𝐹)‘(𝑁 − 1)) + (𝐹‘𝑁))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | seq3m1.m | . . . 4 ⊢ (𝜑 → 𝑀 ∈ ℤ) | |
| 2 | seq3m1.n | . . . 4 ⊢ (𝜑 → 𝑁 ∈ (ℤ≥‘(𝑀 + 1))) | |
| 3 | eluzp1m1 9671 | . . . 4 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ (ℤ≥‘(𝑀 + 1))) → (𝑁 − 1) ∈ (ℤ≥‘𝑀)) | |
| 4 | 1, 2, 3 | syl2anc 411 | . . 3 ⊢ (𝜑 → (𝑁 − 1) ∈ (ℤ≥‘𝑀)) |
| 5 | seq3m1.f | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ (ℤ≥‘𝑀)) → (𝐹‘𝑥) ∈ 𝑆) | |
| 6 | seq3m1.pl | . . 3 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥 + 𝑦) ∈ 𝑆) | |
| 7 | 4, 5, 6 | seq3p1 10608 | . 2 ⊢ (𝜑 → (seq𝑀( + , 𝐹)‘((𝑁 − 1) + 1)) = ((seq𝑀( + , 𝐹)‘(𝑁 − 1)) + (𝐹‘((𝑁 − 1) + 1)))) |
| 8 | eluzelcn 9658 | . . . . 5 ⊢ (𝑁 ∈ (ℤ≥‘(𝑀 + 1)) → 𝑁 ∈ ℂ) | |
| 9 | ax-1cn 8017 | . . . . 5 ⊢ 1 ∈ ℂ | |
| 10 | npcan 8280 | . . . . 5 ⊢ ((𝑁 ∈ ℂ ∧ 1 ∈ ℂ) → ((𝑁 − 1) + 1) = 𝑁) | |
| 11 | 8, 9, 10 | sylancl 413 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘(𝑀 + 1)) → ((𝑁 − 1) + 1) = 𝑁) |
| 12 | 2, 11 | syl 14 | . . 3 ⊢ (𝜑 → ((𝑁 − 1) + 1) = 𝑁) |
| 13 | 12 | fveq2d 5579 | . 2 ⊢ (𝜑 → (seq𝑀( + , 𝐹)‘((𝑁 − 1) + 1)) = (seq𝑀( + , 𝐹)‘𝑁)) |
| 14 | 12 | fveq2d 5579 | . . 3 ⊢ (𝜑 → (𝐹‘((𝑁 − 1) + 1)) = (𝐹‘𝑁)) |
| 15 | 14 | oveq2d 5959 | . 2 ⊢ (𝜑 → ((seq𝑀( + , 𝐹)‘(𝑁 − 1)) + (𝐹‘((𝑁 − 1) + 1))) = ((seq𝑀( + , 𝐹)‘(𝑁 − 1)) + (𝐹‘𝑁))) |
| 16 | 7, 13, 15 | 3eqtr3d 2245 | 1 ⊢ (𝜑 → (seq𝑀( + , 𝐹)‘𝑁) = ((seq𝑀( + , 𝐹)‘(𝑁 − 1)) + (𝐹‘𝑁))) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 = wceq 1372 ∈ wcel 2175 ‘cfv 5270 (class class class)co 5943 ℂcc 7922 1c1 7925 + caddc 7927 − cmin 8242 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: seqm1g 10617 seq3f1olemqsumkj 10654 seq3id 10668 seq3z 10671 bcn2 10907 seq3coll 10985 serf0 11605 lgsval2lem 15429 |
| Copyright terms: Public domain | W3C validator |