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Mirrors > Home > MPE Home > Th. List > seq1 | Structured version Visualization version GIF version |
Description: Value of the sequence builder function at its initial value. (Contributed by Mario Carneiro, 24-Jun-2013.) (Revised by Mario Carneiro, 15-Sep-2013.) |
Ref | Expression |
---|---|
seq1 | ⊢ (𝑀 ∈ ℤ → (seq𝑀( + , 𝐹)‘𝑀) = (𝐹‘𝑀)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | seqeq1 13770 | . . . 4 ⊢ (𝑀 = if(𝑀 ∈ ℤ, 𝑀, 0) → seq𝑀( + , 𝐹) = seqif(𝑀 ∈ ℤ, 𝑀, 0)( + , 𝐹)) | |
2 | id 22 | . . . 4 ⊢ (𝑀 = if(𝑀 ∈ ℤ, 𝑀, 0) → 𝑀 = if(𝑀 ∈ ℤ, 𝑀, 0)) | |
3 | 1, 2 | fveq12d 6811 | . . 3 ⊢ (𝑀 = if(𝑀 ∈ ℤ, 𝑀, 0) → (seq𝑀( + , 𝐹)‘𝑀) = (seqif(𝑀 ∈ ℤ, 𝑀, 0)( + , 𝐹)‘if(𝑀 ∈ ℤ, 𝑀, 0))) |
4 | fveq2 6804 | . . 3 ⊢ (𝑀 = if(𝑀 ∈ ℤ, 𝑀, 0) → (𝐹‘𝑀) = (𝐹‘if(𝑀 ∈ ℤ, 𝑀, 0))) | |
5 | 3, 4 | eqeq12d 2752 | . 2 ⊢ (𝑀 = if(𝑀 ∈ ℤ, 𝑀, 0) → ((seq𝑀( + , 𝐹)‘𝑀) = (𝐹‘𝑀) ↔ (seqif(𝑀 ∈ ℤ, 𝑀, 0)( + , 𝐹)‘if(𝑀 ∈ ℤ, 𝑀, 0)) = (𝐹‘if(𝑀 ∈ ℤ, 𝑀, 0)))) |
6 | 0z 12376 | . . . 4 ⊢ 0 ∈ ℤ | |
7 | 6 | elimel 4534 | . . 3 ⊢ if(𝑀 ∈ ℤ, 𝑀, 0) ∈ ℤ |
8 | eqid 2736 | . . 3 ⊢ (rec((𝑥 ∈ V ↦ (𝑥 + 1)), if(𝑀 ∈ ℤ, 𝑀, 0)) ↾ ω) = (rec((𝑥 ∈ V ↦ (𝑥 + 1)), if(𝑀 ∈ ℤ, 𝑀, 0)) ↾ ω) | |
9 | fvex 6817 | . . 3 ⊢ (𝐹‘if(𝑀 ∈ ℤ, 𝑀, 0)) ∈ V | |
10 | eqid 2736 | . . 3 ⊢ (rec((𝑥 ∈ V, 𝑦 ∈ V ↦ 〈(𝑥 + 1), (𝑥(𝑧 ∈ V, 𝑤 ∈ V ↦ (𝑤 + (𝐹‘(𝑧 + 1))))𝑦)〉), 〈if(𝑀 ∈ ℤ, 𝑀, 0), (𝐹‘if(𝑀 ∈ ℤ, 𝑀, 0))〉) ↾ ω) = (rec((𝑥 ∈ V, 𝑦 ∈ V ↦ 〈(𝑥 + 1), (𝑥(𝑧 ∈ V, 𝑤 ∈ V ↦ (𝑤 + (𝐹‘(𝑧 + 1))))𝑦)〉), 〈if(𝑀 ∈ ℤ, 𝑀, 0), (𝐹‘if(𝑀 ∈ ℤ, 𝑀, 0))〉) ↾ ω) | |
11 | 10 | seqval 13778 | . . 3 ⊢ seqif(𝑀 ∈ ℤ, 𝑀, 0)( + , 𝐹) = ran (rec((𝑥 ∈ V, 𝑦 ∈ V ↦ 〈(𝑥 + 1), (𝑥(𝑧 ∈ V, 𝑤 ∈ V ↦ (𝑤 + (𝐹‘(𝑧 + 1))))𝑦)〉), 〈if(𝑀 ∈ ℤ, 𝑀, 0), (𝐹‘if(𝑀 ∈ ℤ, 𝑀, 0))〉) ↾ ω) |
12 | 7, 8, 9, 10, 11 | uzrdg0i 13725 | . 2 ⊢ (seqif(𝑀 ∈ ℤ, 𝑀, 0)( + , 𝐹)‘if(𝑀 ∈ ℤ, 𝑀, 0)) = (𝐹‘if(𝑀 ∈ ℤ, 𝑀, 0)) |
13 | 5, 12 | dedth 4523 | 1 ⊢ (𝑀 ∈ ℤ → (seq𝑀( + , 𝐹)‘𝑀) = (𝐹‘𝑀)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1539 ∈ wcel 2104 Vcvv 3437 ifcif 4465 〈cop 4571 ↦ cmpt 5164 ↾ cres 5602 ‘cfv 6458 (class class class)co 7307 ∈ cmpo 7309 ωcom 7744 reccrdg 8271 0cc0 10917 1c1 10918 + caddc 10920 ℤcz 12365 seqcseq 13767 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1911 ax-6 1969 ax-7 2009 ax-8 2106 ax-9 2114 ax-10 2135 ax-11 2152 ax-12 2169 ax-ext 2707 ax-sep 5232 ax-nul 5239 ax-pow 5297 ax-pr 5361 ax-un 7620 ax-cnex 10973 ax-resscn 10974 ax-1cn 10975 ax-icn 10976 ax-addcl 10977 ax-addrcl 10978 ax-mulcl 10979 ax-mulrcl 10980 ax-mulcom 10981 ax-addass 10982 ax-mulass 10983 ax-distr 10984 ax-i2m1 10985 ax-1ne0 10986 ax-1rid 10987 ax-rnegex 10988 ax-rrecex 10989 ax-cnre 10990 ax-pre-lttri 10991 ax-pre-lttrn 10992 ax-pre-ltadd 10993 ax-pre-mulgt0 10994 |
This theorem depends on definitions: df-bi 206 df-an 398 df-or 846 df-3or 1088 df-3an 1089 df-tru 1542 df-fal 1552 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2538 df-eu 2567 df-clab 2714 df-cleq 2728 df-clel 2814 df-nfc 2887 df-ne 2942 df-nel 3048 df-ral 3063 df-rex 3072 df-reu 3286 df-rab 3287 df-v 3439 df-sbc 3722 df-csb 3838 df-dif 3895 df-un 3897 df-in 3899 df-ss 3909 df-pss 3911 df-nul 4263 df-if 4466 df-pw 4541 df-sn 4566 df-pr 4568 df-op 4572 df-uni 4845 df-iun 4933 df-br 5082 df-opab 5144 df-mpt 5165 df-tr 5199 df-id 5500 df-eprel 5506 df-po 5514 df-so 5515 df-fr 5555 df-we 5557 df-xp 5606 df-rel 5607 df-cnv 5608 df-co 5609 df-dm 5610 df-rn 5611 df-res 5612 df-ima 5613 df-pred 6217 df-ord 6284 df-on 6285 df-lim 6286 df-suc 6287 df-iota 6410 df-fun 6460 df-fn 6461 df-f 6462 df-f1 6463 df-fo 6464 df-f1o 6465 df-fv 6466 df-riota 7264 df-ov 7310 df-oprab 7311 df-mpo 7312 df-om 7745 df-2nd 7864 df-frecs 8128 df-wrecs 8159 df-recs 8233 df-rdg 8272 df-er 8529 df-en 8765 df-dom 8766 df-sdom 8767 df-pnf 11057 df-mnf 11058 df-xr 11059 df-ltxr 11060 df-le 11061 df-sub 11253 df-neg 11254 df-nn 12020 df-n0 12280 df-z 12366 df-uz 12629 df-seq 13768 |
This theorem is referenced by: seq1i 13781 seqexw 13783 seqcl2 13787 seqfveq2 13791 seqfveq 13793 seqshft2 13795 seqsplit 13802 seq1p 13803 seqcaopr3 13804 seqf1olem2a 13807 seqf1olem2 13809 seqf1o 13810 seqid 13814 seqhomo 13816 seqz 13817 exp1 13834 fac1 14037 bcn2 14079 seqcoll 14223 isumrpcl 15600 clim2prod 15645 prodfn0 15651 prodfrec 15652 ruclem6 15989 sadc0 16206 smup0 16231 seq1st 16321 algr0 16322 eulerthlem2 16528 pcmpt 16638 gsumsplit1r 18416 gsumprval 18417 mulgfval 18747 voliunlem1 24759 volsup 24765 abelthlem6 25640 abelthlem9 25644 leibpi 26137 bposlem5 26481 opsqrlem2 30548 esumfzf 32082 sseqp1 32407 rrvsum 32466 cvmliftlem4 33295 iprodefisumlem 33751 faclimlem1 33754 heiborlem4 36016 fmul01 43170 fmuldfeq 43173 fmul01lt1lem1 43174 stoweidlem3 43593 wallispilem4 43658 wallispi2lem1 43661 wallispi2lem2 43662 stirlinglem7 43670 stirlinglem11 43674 sge0isum 44015 ackval0 46084 |
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