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Theorem fzval2 13550
Description: An alternative way of expressing a finite set of sequential integers. (Contributed by Mario Carneiro, 3-Nov-2013.)
Assertion
Ref Expression
fzval2 ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀...𝑁) = ((𝑀[,]𝑁) ∩ ℤ))

Proof of Theorem fzval2
Dummy variable 𝑘 is distinct from all other variables.
StepHypRef Expression
1 fzval 13549 . 2 ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀...𝑁) = {𝑘 ∈ ℤ ∣ (𝑀𝑘𝑘𝑁)})
2 zssre 12620 . . . . . . 7 ℤ ⊆ ℝ
3 ressxr 11305 . . . . . . 7 ℝ ⊆ ℝ*
42, 3sstri 3993 . . . . . 6 ℤ ⊆ ℝ*
54sseli 3979 . . . . 5 (𝑀 ∈ ℤ → 𝑀 ∈ ℝ*)
64sseli 3979 . . . . 5 (𝑁 ∈ ℤ → 𝑁 ∈ ℝ*)
7 iccval 13426 . . . . 5 ((𝑀 ∈ ℝ*𝑁 ∈ ℝ*) → (𝑀[,]𝑁) = {𝑘 ∈ ℝ* ∣ (𝑀𝑘𝑘𝑁)})
85, 6, 7syl2an 596 . . . 4 ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀[,]𝑁) = {𝑘 ∈ ℝ* ∣ (𝑀𝑘𝑘𝑁)})
98ineq1d 4219 . . 3 ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((𝑀[,]𝑁) ∩ ℤ) = ({𝑘 ∈ ℝ* ∣ (𝑀𝑘𝑘𝑁)} ∩ ℤ))
10 inrab2 4317 . . . 4 ({𝑘 ∈ ℝ* ∣ (𝑀𝑘𝑘𝑁)} ∩ ℤ) = {𝑘 ∈ (ℝ* ∩ ℤ) ∣ (𝑀𝑘𝑘𝑁)}
11 sseqin2 4223 . . . . . 6 (ℤ ⊆ ℝ* ↔ (ℝ* ∩ ℤ) = ℤ)
124, 11mpbi 230 . . . . 5 (ℝ* ∩ ℤ) = ℤ
1312rabeqi 3450 . . . 4 {𝑘 ∈ (ℝ* ∩ ℤ) ∣ (𝑀𝑘𝑘𝑁)} = {𝑘 ∈ ℤ ∣ (𝑀𝑘𝑘𝑁)}
1410, 13eqtri 2765 . . 3 ({𝑘 ∈ ℝ* ∣ (𝑀𝑘𝑘𝑁)} ∩ ℤ) = {𝑘 ∈ ℤ ∣ (𝑀𝑘𝑘𝑁)}
159, 14eqtr2di 2794 . 2 ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → {𝑘 ∈ ℤ ∣ (𝑀𝑘𝑘𝑁)} = ((𝑀[,]𝑁) ∩ ℤ))
161, 15eqtrd 2777 1 ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀...𝑁) = ((𝑀[,]𝑁) ∩ ℤ))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 395   = wceq 1540  wcel 2108  {crab 3436  cin 3950  wss 3951   class class class wbr 5143  (class class class)co 7431  cr 11154  *cxr 11294  cle 11296  cz 12613  [,]cicc 13390  ...cfz 13547
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 1910  ax-6 1967  ax-7 2007  ax-8 2110  ax-9 2118  ax-10 2141  ax-11 2157  ax-12 2177  ax-ext 2708  ax-sep 5296  ax-nul 5306  ax-pr 5432  ax-un 7755  ax-cnex 11211  ax-resscn 11212
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3or 1088  df-3an 1089  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2065  df-mo 2540  df-eu 2569  df-clab 2715  df-cleq 2729  df-clel 2816  df-nfc 2892  df-ral 3062  df-rex 3071  df-rab 3437  df-v 3482  df-sbc 3789  df-dif 3954  df-un 3956  df-in 3958  df-ss 3968  df-nul 4334  df-if 4526  df-pw 4602  df-sn 4627  df-pr 4629  df-op 4633  df-uni 4908  df-br 5144  df-opab 5206  df-id 5578  df-xp 5691  df-rel 5692  df-cnv 5693  df-co 5694  df-dm 5695  df-iota 6514  df-fun 6563  df-fv 6569  df-ov 7434  df-oprab 7435  df-mpo 7436  df-xr 11299  df-neg 11495  df-z 12614  df-icc 13394  df-fz 13548
This theorem is referenced by:  dvfsumle  26060  dvfsumleOLD  26061  dvfsumabs  26063  taylplem1  26404  taylplem2  26405  taylpfval  26406  dvtaylp  26412  ppisval  27147
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