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| Mirrors > Home > MPE Home > Th. List > seqcl | Structured version Visualization version GIF version | ||
| Description: Closure properties of the recursive sequence builder. (Contributed by Mario Carneiro, 2-Jul-2013.) (Revised by Mario Carneiro, 27-May-2014.) |
| Ref | Expression |
|---|---|
| seqcl.1 | ⊢ (𝜑 → 𝑁 ∈ (ℤ≥‘𝑀)) |
| seqcl.2 | ⊢ ((𝜑 ∧ 𝑥 ∈ (𝑀...𝑁)) → (𝐹‘𝑥) ∈ 𝑆) |
| seqcl.3 | ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥 + 𝑦) ∈ 𝑆) |
| Ref | Expression |
|---|---|
| seqcl | ⊢ (𝜑 → (seq𝑀( + , 𝐹)‘𝑁) ∈ 𝑆) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fveq2 6911 | . . . 4 ⊢ (𝑥 = 𝑀 → (𝐹‘𝑥) = (𝐹‘𝑀)) | |
| 2 | 1 | eleq1d 2849 | . . 3 ⊢ (𝑥 = 𝑀 → ((𝐹‘𝑥) ∈ 𝑆 ↔ (𝐹‘𝑀) ∈ 𝑆)) |
| 3 | seqcl.2 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝑀...𝑁)) → (𝐹‘𝑥) ∈ 𝑆) | |
| 4 | 3 | ralrimiva 3158 | . . 3 ⊢ (𝜑 → ∀𝑥 ∈ (𝑀...𝑁)(𝐹‘𝑥) ∈ 𝑆) |
| 5 | seqcl.1 | . . . 4 ⊢ (𝜑 → 𝑁 ∈ (ℤ≥‘𝑀)) | |
| 6 | eluzfz1 13694 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑀 ∈ (𝑀...𝑁)) | |
| 7 | 5, 6 | syl 18 | . . 3 ⊢ (𝜑 → 𝑀 ∈ (𝑀...𝑁)) |
| 8 | 2, 4, 7 | rspcdva 3581 | . 2 ⊢ (𝜑 → (𝐹‘𝑀) ∈ 𝑆) |
| 9 | seqcl.3 | . 2 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥 + 𝑦) ∈ 𝑆) | |
| 10 | eluzel2 13000 | . . . . . 6 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑀 ∈ ℤ) | |
| 11 | 5, 10 | syl 18 | . . . . 5 ⊢ (𝜑 → 𝑀 ∈ ℤ) |
| 12 | fzp1ss 13739 | . . . . 5 ⊢ (𝑀 ∈ ℤ → ((𝑀 + 1)...𝑁) ⊆ (𝑀...𝑁)) | |
| 13 | 11, 12 | syl 18 | . . . 4 ⊢ (𝜑 → ((𝑀 + 1)...𝑁) ⊆ (𝑀...𝑁)) |
| 14 | 13 | sselda 3913 | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝑀 + 1)...𝑁)) → 𝑥 ∈ (𝑀...𝑁)) |
| 15 | 14, 3 | syldan 603 | . 2 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝑀 + 1)...𝑁)) → (𝐹‘𝑥) ∈ 𝑆) |
| 16 | 8, 9, 5, 15 | seqcl2 14193 | 1 ⊢ (𝜑 → (seq𝑀( + , 𝐹)‘𝑁) ∈ 𝑆) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2147 ⊆ wss 3900 ‘cfv 6561 (class class class)co 7446 1c1 11231 + caddc 11233 ℤcz 12723 ℤ≥cuz 12995 ...cfz 13669 seqcseq 14174 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5253 ax-nul 5264 ax-pow 5332 ax-pr 5396 ax-un 7778 ax-cnex 11286 ax-resscn 11287 ax-1cn 11288 ax-icn 11289 ax-addcl 11290 ax-addrcl 11291 ax-mulcl 11292 ax-mulrcl 11293 ax-mulcom 11294 ax-addass 11295 ax-mulass 11296 ax-distr 11297 ax-i2m1 11298 ax-1ne0 11299 ax-1rid 11300 ax-rnegex 11301 ax-rrecex 11302 ax-cnre 11303 ax-pre-lttri 11304 ax-pre-lttrn 11305 ax-pre-ltadd 11306 ax-pre-mulgt0 11307 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-iun 4956 df-br 5107 df-opab 5172 df-mpt 5191 df-tr 5217 df-id 5551 df-eprel 5556 df-po 5564 df-so 5565 df-fr 5609 df-we 5611 df-xp 5662 df-rel 5663 df-cnv 5664 df-co 5665 df-dm 5666 df-rn 5667 df-res 5668 df-ima 5669 df-pred 6325 df-ord 6386 df-on 6387 df-lim 6388 df-suc 6389 df-iota 6515 df-fun 6563 df-fn 6564 df-f 6565 df-f1 6566 df-fo 6567 df-f1o 6568 df-fv 6569 df-riota 7403 df-ov 7449 df-oprab 7450 df-mpo 7451 df-om 7905 df-1st 8028 df-2nd 8029 df-frecs 8330 df-wrecs 8361 df-recs 8410 df-rdg 8449 df-er 8748 df-en 9005 df-dom 9006 df-sdom 9007 df-pnf 11375 df-mnf 11376 df-xr 11377 df-ltxr 11378 df-le 11379 df-sub 11573 df-neg 11574 df-nn 12366 df-n0 12637 df-z 12724 df-uz 12996 df-fz 13670 df-seq 14175 |
| This theorem is used by: sermono 14207 seqsplit 14208 seqcaopr2 14211 seqf1olem2a 14213 seqf1olem2 14215 seqid3 14219 seqhomo 14222 seqz 14223 seqdistr 14226 serge0 14229 serle 14230 seqof 14232 seqcoll 14639 seqcoll2 14640 fsumcl2lem 15929 prodfn0 16095 prodfrec 16096 prodfdiv 16097 fprodcl2lem 16149 eulerthlem2 16991 gsumwsubmcl 19065 mulgnnsubcl 19328 gsumzcl2 20157 gsumzaddlem 20168 gsummptfzcl 20216 lgscllem 27664 lgsval4a 27679 lgsneg 27681 lgsdir 27692 lgsdilem2 27693 lgsdi 27694 lgsne0 27695 gsumncl 35255 faclim 36702 knoppcnlem8 37557 mblfinlem2 38781 fmul01 46807 fmulcl 46808 fmuldfeq 46810 fmul01lt1lem1 46811 fmul01lt1lem2 46812 stoweidlem3 47228 stoweidlem42 47267 stoweidlem48 47273 wallispilem4 47293 wallispi 47295 wallispi2lem1 47296 wallispi2 47298 stirlinglem5 47303 stirlinglem7 47305 stirlinglem10 47308 sge0isum 47652 |
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