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Theorem fzval2 13242
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 13241 . 2 ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀...𝑁) = {𝑘 ∈ ℤ ∣ (𝑀𝑘𝑘𝑁)})
2 zssre 12326 . . . . . . 7 ℤ ⊆ ℝ
3 ressxr 11019 . . . . . . 7 ℝ ⊆ ℝ*
42, 3sstri 3930 . . . . . 6 ℤ ⊆ ℝ*
54sseli 3917 . . . . 5 (𝑀 ∈ ℤ → 𝑀 ∈ ℝ*)
64sseli 3917 . . . . 5 (𝑁 ∈ ℤ → 𝑁 ∈ ℝ*)
7 iccval 13118 . . . . 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 4145 . . 3 ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((𝑀[,]𝑁) ∩ ℤ) = ({𝑘 ∈ ℝ* ∣ (𝑀𝑘𝑘𝑁)} ∩ ℤ))
10 inrab2 4241 . . . 4 ({𝑘 ∈ ℝ* ∣ (𝑀𝑘𝑘𝑁)} ∩ ℤ) = {𝑘 ∈ (ℝ* ∩ ℤ) ∣ (𝑀𝑘𝑘𝑁)}
11 sseqin2 4149 . . . . . 6 (ℤ ⊆ ℝ* ↔ (ℝ* ∩ ℤ) = ℤ)
124, 11mpbi 229 . . . . 5 (ℝ* ∩ ℤ) = ℤ
1312rabeqi 3416 . . . 4 {𝑘 ∈ (ℝ* ∩ ℤ) ∣ (𝑀𝑘𝑘𝑁)} = {𝑘 ∈ ℤ ∣ (𝑀𝑘𝑘𝑁)}
1410, 13eqtri 2766 . . 3 ({𝑘 ∈ ℝ* ∣ (𝑀𝑘𝑘𝑁)} ∩ ℤ) = {𝑘 ∈ ℤ ∣ (𝑀𝑘𝑘𝑁)}
159, 14eqtr2di 2795 . 2 ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → {𝑘 ∈ ℤ ∣ (𝑀𝑘𝑘𝑁)} = ((𝑀[,]𝑁) ∩ ℤ))
161, 15eqtrd 2778 1 ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀...𝑁) = ((𝑀[,]𝑁) ∩ ℤ))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 396   = wceq 1539  wcel 2106  {crab 3068  cin 3886  wss 3887   class class class wbr 5074  (class class class)co 7275  cr 10870  *cxr 11008  cle 11010  cz 12319  [,]cicc 13082  ...cfz 13239
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798  ax-4 1812  ax-5 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-10 2137  ax-11 2154  ax-12 2171  ax-ext 2709  ax-sep 5223  ax-nul 5230  ax-pr 5352  ax-un 7588  ax-cnex 10927  ax-resscn 10928
This theorem depends on definitions:  df-bi 206  df-an 397  df-or 845  df-3or 1087  df-3an 1088  df-tru 1542  df-fal 1552  df-ex 1783  df-nf 1787  df-sb 2068  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2816  df-nfc 2889  df-ral 3069  df-rex 3070  df-rab 3073  df-v 3434  df-sbc 3717  df-dif 3890  df-un 3892  df-in 3894  df-ss 3904  df-nul 4257  df-if 4460  df-sn 4562  df-pr 4564  df-op 4568  df-uni 4840  df-br 5075  df-opab 5137  df-id 5489  df-xp 5595  df-rel 5596  df-cnv 5597  df-co 5598  df-dm 5599  df-iota 6391  df-fun 6435  df-fv 6441  df-ov 7278  df-oprab 7279  df-mpo 7280  df-xr 11013  df-neg 11208  df-z 12320  df-icc 13086  df-fz 13240
This theorem is referenced by:  dvfsumle  25185  dvfsumabs  25187  taylplem1  25522  taylplem2  25523  taylpfval  25524  dvtaylp  25529  ppisval  26253
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