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| Mirrors > Home > ILE Home > Th. List > fsumsersdc | GIF version | ||
| Description: Special case of series sum over a finite upper integer index set. (Contributed by Mario Carneiro, 26-Jul-2013.) (Revised by Jim Kingdon, 5-May-2023.) |
| Ref | Expression |
|---|---|
| fsumsers.1 | ⊢ ((𝜑 ∧ 𝑘 ∈ (ℤ≥‘𝑀)) → (𝐹‘𝑘) = if(𝑘 ∈ 𝐴, 𝐵, 0)) |
| fsumsers.2 | ⊢ (𝜑 → 𝑁 ∈ (ℤ≥‘𝑀)) |
| fsumsers.3 | ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝐵 ∈ ℂ) |
| fsumsers.dc | ⊢ ((𝜑 ∧ 𝑘 ∈ (ℤ≥‘𝑀)) → DECID 𝑘 ∈ 𝐴) |
| fsumsers.4 | ⊢ (𝜑 → 𝐴 ⊆ (𝑀...𝑁)) |
| Ref | Expression |
|---|---|
| fsumsersdc | ⊢ (𝜑 → Σ𝑘 ∈ 𝐴 𝐵 = (seq𝑀( + , 𝐹)‘𝑁)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2238 | . . 3 ⊢ (ℤ≥‘𝑀) = (ℤ≥‘𝑀) | |
| 2 | fsumsers.2 | . . . 4 ⊢ (𝜑 → 𝑁 ∈ (ℤ≥‘𝑀)) | |
| 3 | eluzel2 9942 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑀 ∈ ℤ) | |
| 4 | 2, 3 | syl 14 | . . 3 ⊢ (𝜑 → 𝑀 ∈ ℤ) |
| 5 | fsumsers.4 | . . . 4 ⊢ (𝜑 → 𝐴 ⊆ (𝑀...𝑁)) | |
| 6 | fzssuz 10488 | . . . 4 ⊢ (𝑀...𝑁) ⊆ (ℤ≥‘𝑀) | |
| 7 | 5, 6 | sstrdi 3260 | . . 3 ⊢ (𝜑 → 𝐴 ⊆ (ℤ≥‘𝑀)) |
| 8 | fsumsers.1 | . . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ (ℤ≥‘𝑀)) → (𝐹‘𝑘) = if(𝑘 ∈ 𝐴, 𝐵, 0)) | |
| 9 | fsumsers.dc | . . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ (ℤ≥‘𝑀)) → DECID 𝑘 ∈ 𝐴) | |
| 10 | 9 | ralrimiva 2623 | . . . 4 ⊢ (𝜑 → ∀𝑘 ∈ (ℤ≥‘𝑀)DECID 𝑘 ∈ 𝐴) |
| 11 | eleq1w 2299 | . . . . . 6 ⊢ (𝑘 = 𝑗 → (𝑘 ∈ 𝐴 ↔ 𝑗 ∈ 𝐴)) | |
| 12 | 11 | dcbid 850 | . . . . 5 ⊢ (𝑘 = 𝑗 → (DECID 𝑘 ∈ 𝐴 ↔ DECID 𝑗 ∈ 𝐴)) |
| 13 | 12 | cbvralv 2786 | . . . 4 ⊢ (∀𝑘 ∈ (ℤ≥‘𝑀)DECID 𝑘 ∈ 𝐴 ↔ ∀𝑗 ∈ (ℤ≥‘𝑀)DECID 𝑗 ∈ 𝐴) |
| 14 | 10, 13 | sylib 122 | . . 3 ⊢ (𝜑 → ∀𝑗 ∈ (ℤ≥‘𝑀)DECID 𝑗 ∈ 𝐴) |
| 15 | fsumsers.3 | . . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝐵 ∈ ℂ) | |
| 16 | 1, 4, 7, 8, 14, 15 | zsumdc 12176 | . 2 ⊢ (𝜑 → Σ𝑘 ∈ 𝐴 𝐵 = ( ⇝ ‘seq𝑀( + , 𝐹))) |
| 17 | fclim 12085 | . . . 4 ⊢ ⇝ :dom ⇝ ⟶ℂ | |
| 18 | ffun 5539 | . . . 4 ⊢ ( ⇝ :dom ⇝ ⟶ℂ → Fun ⇝ ) | |
| 19 | 17, 18 | ax-mp 5 | . . 3 ⊢ Fun ⇝ |
| 20 | 8, 2, 15, 9, 5 | fsum3cvg2 12186 | . . 3 ⊢ (𝜑 → seq𝑀( + , 𝐹) ⇝ (seq𝑀( + , 𝐹)‘𝑁)) |
| 21 | funbrfv 5742 | . . 3 ⊢ (Fun ⇝ → (seq𝑀( + , 𝐹) ⇝ (seq𝑀( + , 𝐹)‘𝑁) → ( ⇝ ‘seq𝑀( + , 𝐹)) = (seq𝑀( + , 𝐹)‘𝑁))) | |
| 22 | 19, 20, 21 | mpsyl 65 | . 2 ⊢ (𝜑 → ( ⇝ ‘seq𝑀( + , 𝐹)) = (seq𝑀( + , 𝐹)‘𝑁)) |
| 23 | 16, 22 | eqtrd 2271 | 1 ⊢ (𝜑 → Σ𝑘 ∈ 𝐴 𝐵 = (seq𝑀( + , 𝐹)‘𝑁)) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 104 DECID wdc 846 = wceq 1402 ∈ wcel 2209 ∀wral 2528 ⊆ wss 3220 ifcif 3638 class class class wbr 4131 dom cdm 4776 Fun wfun 5374 ⟶wf 5376 ‘cfv 5380 (class class class)co 6088 ℂcc 8183 0cc0 8185 + caddc 8188 ℤcz 9655 ℤ≥cuz 9937 ...cfz 10428 seqcseq 10905 ⇝ cli 12069 Σcsu 12144 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-coll 4248 ax-sep 4251 ax-nul 4261 ax-pow 4313 ax-pr 4348 ax-un 4580 ax-setind 4686 ax-iinf 4737 ax-cnex 8276 ax-resscn 8277 ax-1cn 8278 ax-1re 8279 ax-icn 8280 ax-addcl 8281 ax-addrcl 8282 ax-mulcl 8283 ax-mulrcl 8284 ax-addcom 8285 ax-mulcom 8286 ax-addass 8287 ax-mulass 8288 ax-distr 8289 ax-i2m1 8290 ax-0lt1 8291 ax-1rid 8292 ax-0id 8293 ax-rnegex 8294 ax-precex 8295 ax-cnre 8296 ax-pre-ltirr 8297 ax-pre-ltwlin 8298 ax-pre-lttrn 8299 ax-pre-apti 8300 ax-pre-ltadd 8301 ax-pre-mulgt0 8302 ax-pre-mulext 8303 ax-arch 8304 ax-caucvg 8305 |
| This proof depends on definitions: df-bi 117 df-dc 847 df-3or 1010 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-nel 2516 df-ral 2533 df-rex 2534 df-reu 2535 df-rmo 2536 df-rab 2537 df-v 2823 df-sbc 3052 df-csb 3148 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-nul 3521 df-if 3639 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-int 3971 df-iun 4014 df-br 4132 df-opab 4194 df-mpt 4195 df-tr 4232 df-id 4440 df-po 4443 df-iso 4444 df-iord 4513 df-on 4515 df-ilim 4516 df-suc 4518 df-iom 4740 df-xp 4782 df-rel 4783 df-cnv 4784 df-co 4785 df-dm 4786 df-rn 4787 df-res 4788 df-ima 4789 df-iota 5340 df-fun 5382 df-fn 5383 df-f 5384 df-f1 5385 df-fo 5386 df-f1o 5387 df-fv 5388 df-isom 5389 df-riota 6041 df-ov 6091 df-oprab 6092 df-mpo 6093 df-1st 6378 df-2nd 6379 df-recs 6580 df-irdg 6645 df-frec 6666 df-1o 6691 df-oadd 6695 df-er 6811 df-en 7027 df-dom 7028 df-fin 7029 df-pnf 8368 df-mnf 8369 df-xr 8370 df-ltxr 8371 df-le 8372 df-sub 8506 df-neg 8507 df-reap 8911 df-ap 8918 df-div 9011 df-inn 9314 df-2 9372 df-3 9373 df-4 9374 df-n0 9575 df-z 9656 df-uz 9938 df-q 10036 df-rp 10072 df-fz 10429 df-fzo 10567 df-seqfrec 10906 df-exp 10997 df-ihash 11237 df-cj 11629 df-re 11630 df-im 11631 df-rsqrt 11786 df-abs 11787 df-clim 12070 df-sumdc 12145 |
| This theorem is used by: fsum3ser 12189 |
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