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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 13705 | . . . 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 6775 | . . 3 ⊢ (𝑀 = if(𝑀 ∈ ℤ, 𝑀, 0) → (seq𝑀( + , 𝐹)‘𝑀) = (seqif(𝑀 ∈ ℤ, 𝑀, 0)( + , 𝐹)‘if(𝑀 ∈ ℤ, 𝑀, 0))) |
4 | fveq2 6768 | . . 3 ⊢ (𝑀 = if(𝑀 ∈ ℤ, 𝑀, 0) → (𝐹‘𝑀) = (𝐹‘if(𝑀 ∈ ℤ, 𝑀, 0))) | |
5 | 3, 4 | eqeq12d 2755 | . 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 12313 | . . . 4 ⊢ 0 ∈ ℤ | |
7 | 6 | elimel 4533 | . . 3 ⊢ if(𝑀 ∈ ℤ, 𝑀, 0) ∈ ℤ |
8 | eqid 2739 | . . 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 6781 | . . 3 ⊢ (𝐹‘if(𝑀 ∈ ℤ, 𝑀, 0)) ∈ V | |
10 | eqid 2739 | . . 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 13713 | . . 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 13660 | . 2 ⊢ (seqif(𝑀 ∈ ℤ, 𝑀, 0)( + , 𝐹)‘if(𝑀 ∈ ℤ, 𝑀, 0)) = (𝐹‘if(𝑀 ∈ ℤ, 𝑀, 0)) |
13 | 5, 12 | dedth 4522 | 1 ⊢ (𝑀 ∈ ℤ → (seq𝑀( + , 𝐹)‘𝑀) = (𝐹‘𝑀)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1541 ∈ wcel 2109 Vcvv 3430 ifcif 4464 〈cop 4572 ↦ cmpt 5161 ↾ cres 5590 ‘cfv 6430 (class class class)co 7268 ∈ cmpo 7270 ωcom 7700 reccrdg 8224 0cc0 10855 1c1 10856 + caddc 10858 ℤcz 12302 seqcseq 13702 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1801 ax-4 1815 ax-5 1916 ax-6 1974 ax-7 2014 ax-8 2111 ax-9 2119 ax-10 2140 ax-11 2157 ax-12 2174 ax-ext 2710 ax-sep 5226 ax-nul 5233 ax-pow 5291 ax-pr 5355 ax-un 7579 ax-cnex 10911 ax-resscn 10912 ax-1cn 10913 ax-icn 10914 ax-addcl 10915 ax-addrcl 10916 ax-mulcl 10917 ax-mulrcl 10918 ax-mulcom 10919 ax-addass 10920 ax-mulass 10921 ax-distr 10922 ax-i2m1 10923 ax-1ne0 10924 ax-1rid 10925 ax-rnegex 10926 ax-rrecex 10927 ax-cnre 10928 ax-pre-lttri 10929 ax-pre-lttrn 10930 ax-pre-ltadd 10931 ax-pre-mulgt0 10932 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1544 df-fal 1554 df-ex 1786 df-nf 1790 df-sb 2071 df-mo 2541 df-eu 2570 df-clab 2717 df-cleq 2731 df-clel 2817 df-nfc 2890 df-ne 2945 df-nel 3051 df-ral 3070 df-rex 3071 df-reu 3072 df-rab 3074 df-v 3432 df-sbc 3720 df-csb 3837 df-dif 3894 df-un 3896 df-in 3898 df-ss 3908 df-pss 3910 df-nul 4262 df-if 4465 df-pw 4540 df-sn 4567 df-pr 4569 df-tp 4571 df-op 4573 df-uni 4845 df-iun 4931 df-br 5079 df-opab 5141 df-mpt 5162 df-tr 5196 df-id 5488 df-eprel 5494 df-po 5502 df-so 5503 df-fr 5543 df-we 5545 df-xp 5594 df-rel 5595 df-cnv 5596 df-co 5597 df-dm 5598 df-rn 5599 df-res 5600 df-ima 5601 df-pred 6199 df-ord 6266 df-on 6267 df-lim 6268 df-suc 6269 df-iota 6388 df-fun 6432 df-fn 6433 df-f 6434 df-f1 6435 df-fo 6436 df-f1o 6437 df-fv 6438 df-riota 7225 df-ov 7271 df-oprab 7272 df-mpo 7273 df-om 7701 df-2nd 7818 df-frecs 8081 df-wrecs 8112 df-recs 8186 df-rdg 8225 df-er 8472 df-en 8708 df-dom 8709 df-sdom 8710 df-pnf 10995 df-mnf 10996 df-xr 10997 df-ltxr 10998 df-le 10999 df-sub 11190 df-neg 11191 df-nn 11957 df-n0 12217 df-z 12303 df-uz 12565 df-seq 13703 |
This theorem is referenced by: seq1i 13716 seqexw 13718 seqcl2 13722 seqfveq2 13726 seqfveq 13728 seqshft2 13730 seqsplit 13737 seq1p 13738 seqcaopr3 13739 seqf1olem2a 13742 seqf1olem2 13744 seqf1o 13745 seqid 13749 seqhomo 13751 seqz 13752 exp1 13769 fac1 13972 bcn2 14014 seqcoll 14159 isumrpcl 15536 clim2prod 15581 prodfn0 15587 prodfrec 15588 ruclem6 15925 sadc0 16142 smup0 16167 seq1st 16257 algr0 16258 eulerthlem2 16464 pcmpt 16574 gsumsplit1r 18352 gsumprval 18353 mulgfval 18683 voliunlem1 24695 volsup 24701 abelthlem6 25576 abelthlem9 25580 leibpi 26073 bposlem5 26417 opsqrlem2 30482 esumfzf 32016 sseqp1 32341 rrvsum 32400 cvmliftlem4 33229 iprodefisumlem 33685 faclimlem1 33688 heiborlem4 35951 fmul01 43075 fmuldfeq 43078 fmul01lt1lem1 43079 stoweidlem3 43498 wallispilem4 43563 wallispi2lem1 43566 wallispi2lem2 43567 stirlinglem7 43575 stirlinglem11 43579 sge0isum 43919 ackval0 45978 |
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