![]() |
Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
|
Mirrors > Home > ILE Home > Th. List > iseqm1 | GIF version |
Description: Value of the sequence builder function at a successor. (Contributed by Mario Carneiro, 24-Jun-2013.) |
Ref | Expression |
---|---|
iseqm1.m | ⊢ (𝜑 → 𝑀 ∈ ℤ) |
iseqm1.n | ⊢ (𝜑 → 𝑁 ∈ (ℤ≥‘(𝑀 + 1))) |
iseqm1.f | ⊢ ((𝜑 ∧ 𝑥 ∈ (ℤ≥‘𝑀)) → (𝐹‘𝑥) ∈ 𝑆) |
iseqm1.pl | ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥 + 𝑦) ∈ 𝑆) |
Ref | Expression |
---|---|
iseqm1 | ⊢ (𝜑 → (seq𝑀( + , 𝐹, 𝑆)‘𝑁) = ((seq𝑀( + , 𝐹, 𝑆)‘(𝑁 − 1)) + (𝐹‘𝑁))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | iseqm1.m | . . . 4 ⊢ (𝜑 → 𝑀 ∈ ℤ) | |
2 | iseqm1.n | . . . 4 ⊢ (𝜑 → 𝑁 ∈ (ℤ≥‘(𝑀 + 1))) | |
3 | eluzp1m1 8723 | . . . 4 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ (ℤ≥‘(𝑀 + 1))) → (𝑁 − 1) ∈ (ℤ≥‘𝑀)) | |
4 | 1, 2, 3 | syl2anc 403 | . . 3 ⊢ (𝜑 → (𝑁 − 1) ∈ (ℤ≥‘𝑀)) |
5 | iseqm1.f | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ (ℤ≥‘𝑀)) → (𝐹‘𝑥) ∈ 𝑆) | |
6 | iseqm1.pl | . . 3 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥 + 𝑦) ∈ 𝑆) | |
7 | 4, 5, 6 | iseqp1 9538 | . 2 ⊢ (𝜑 → (seq𝑀( + , 𝐹, 𝑆)‘((𝑁 − 1) + 1)) = ((seq𝑀( + , 𝐹, 𝑆)‘(𝑁 − 1)) + (𝐹‘((𝑁 − 1) + 1)))) |
8 | eluzelcn 8711 | . . . . 5 ⊢ (𝑁 ∈ (ℤ≥‘(𝑀 + 1)) → 𝑁 ∈ ℂ) | |
9 | ax-1cn 7131 | . . . . 5 ⊢ 1 ∈ ℂ | |
10 | npcan 7384 | . . . . 5 ⊢ ((𝑁 ∈ ℂ ∧ 1 ∈ ℂ) → ((𝑁 − 1) + 1) = 𝑁) | |
11 | 8, 9, 10 | sylancl 404 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘(𝑀 + 1)) → ((𝑁 − 1) + 1) = 𝑁) |
12 | 2, 11 | syl 14 | . . 3 ⊢ (𝜑 → ((𝑁 − 1) + 1) = 𝑁) |
13 | 12 | fveq2d 5213 | . 2 ⊢ (𝜑 → (seq𝑀( + , 𝐹, 𝑆)‘((𝑁 − 1) + 1)) = (seq𝑀( + , 𝐹, 𝑆)‘𝑁)) |
14 | 12 | fveq2d 5213 | . . 3 ⊢ (𝜑 → (𝐹‘((𝑁 − 1) + 1)) = (𝐹‘𝑁)) |
15 | 14 | oveq2d 5559 | . 2 ⊢ (𝜑 → ((seq𝑀( + , 𝐹, 𝑆)‘(𝑁 − 1)) + (𝐹‘((𝑁 − 1) + 1))) = ((seq𝑀( + , 𝐹, 𝑆)‘(𝑁 − 1)) + (𝐹‘𝑁))) |
16 | 7, 13, 15 | 3eqtr3d 2122 | 1 ⊢ (𝜑 → (seq𝑀( + , 𝐹, 𝑆)‘𝑁) = ((seq𝑀( + , 𝐹, 𝑆)‘(𝑁 − 1)) + (𝐹‘𝑁))) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 102 = wceq 1285 ∈ wcel 1434 ‘cfv 4932 (class class class)co 5543 ℂcc 7041 1c1 7044 + caddc 7046 − cmin 7346 ℤcz 8432 ℤ≥cuz 8700 seqcseq 9521 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-in1 577 ax-in2 578 ax-io 663 ax-5 1377 ax-7 1378 ax-gen 1379 ax-ie1 1423 ax-ie2 1424 ax-8 1436 ax-10 1437 ax-11 1438 ax-i12 1439 ax-bndl 1440 ax-4 1441 ax-13 1445 ax-14 1446 ax-17 1460 ax-i9 1464 ax-ial 1468 ax-i5r 1469 ax-ext 2064 ax-coll 3901 ax-sep 3904 ax-nul 3912 ax-pow 3956 ax-pr 3972 ax-un 4196 ax-setind 4288 ax-iinf 4337 ax-cnex 7129 ax-resscn 7130 ax-1cn 7131 ax-1re 7132 ax-icn 7133 ax-addcl 7134 ax-addrcl 7135 ax-mulcl 7136 ax-addcom 7138 ax-addass 7140 ax-distr 7142 ax-i2m1 7143 ax-0lt1 7144 ax-0id 7146 ax-rnegex 7147 ax-cnre 7149 ax-pre-ltirr 7150 ax-pre-ltwlin 7151 ax-pre-lttrn 7152 ax-pre-ltadd 7154 |
This theorem depends on definitions: df-bi 115 df-3or 921 df-3an 922 df-tru 1288 df-fal 1291 df-nf 1391 df-sb 1687 df-eu 1945 df-mo 1946 df-clab 2069 df-cleq 2075 df-clel 2078 df-nfc 2209 df-ne 2247 df-nel 2341 df-ral 2354 df-rex 2355 df-reu 2356 df-rab 2358 df-v 2604 df-sbc 2817 df-csb 2910 df-dif 2976 df-un 2978 df-in 2980 df-ss 2987 df-nul 3259 df-pw 3392 df-sn 3412 df-pr 3413 df-op 3415 df-uni 3610 df-int 3645 df-iun 3688 df-br 3794 df-opab 3848 df-mpt 3849 df-tr 3884 df-id 4056 df-iord 4129 df-on 4131 df-ilim 4132 df-suc 4134 df-iom 4340 df-xp 4377 df-rel 4378 df-cnv 4379 df-co 4380 df-dm 4381 df-rn 4382 df-res 4383 df-ima 4384 df-iota 4897 df-fun 4934 df-fn 4935 df-f 4936 df-f1 4937 df-fo 4938 df-f1o 4939 df-fv 4940 df-riota 5499 df-ov 5546 df-oprab 5547 df-mpt2 5548 df-1st 5798 df-2nd 5799 df-recs 5954 df-frec 6040 df-pnf 7217 df-mnf 7218 df-xr 7219 df-ltxr 7220 df-le 7221 df-sub 7348 df-neg 7349 df-inn 8107 df-n0 8356 df-z 8433 df-uz 8701 df-iseq 9522 |
This theorem is referenced by: iseqid 9563 iseqz 9566 bcn2 9788 serif0 10327 |
Copyright terms: Public domain | W3C validator |