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Theorem vdwapfval 16918
Description: Define the arithmetic progression function, which takes as input a length 𝑘, a start point 𝑎, and a step 𝑑 and outputs the set of points in this progression. (Contributed by Mario Carneiro, 18-Aug-2014.)
Assertion
Ref Expression
vdwapfval (𝐾 ∈ ℕ0 → (AP‘𝐾) = (𝑎 ∈ ℕ, 𝑑 ∈ ℕ ↦ ran (𝑚 ∈ (0...(𝐾 − 1)) ↦ (𝑎 + (𝑚 · 𝑑)))))
Distinct variable group:   𝑎,𝑑,𝑚,𝐾

Proof of Theorem vdwapfval
Dummy variable 𝑘 is distinct from all other variables.
StepHypRef Expression
1 simp1 1136 . . . . . . 7 ((𝑘 = 𝐾𝑎 ∈ ℕ ∧ 𝑑 ∈ ℕ) → 𝑘 = 𝐾)
21oveq1d 7384 . . . . . 6 ((𝑘 = 𝐾𝑎 ∈ ℕ ∧ 𝑑 ∈ ℕ) → (𝑘 − 1) = (𝐾 − 1))
32oveq2d 7385 . . . . 5 ((𝑘 = 𝐾𝑎 ∈ ℕ ∧ 𝑑 ∈ ℕ) → (0...(𝑘 − 1)) = (0...(𝐾 − 1)))
43mpteq1d 5192 . . . 4 ((𝑘 = 𝐾𝑎 ∈ ℕ ∧ 𝑑 ∈ ℕ) → (𝑚 ∈ (0...(𝑘 − 1)) ↦ (𝑎 + (𝑚 · 𝑑))) = (𝑚 ∈ (0...(𝐾 − 1)) ↦ (𝑎 + (𝑚 · 𝑑))))
54rneqd 5891 . . 3 ((𝑘 = 𝐾𝑎 ∈ ℕ ∧ 𝑑 ∈ ℕ) → ran (𝑚 ∈ (0...(𝑘 − 1)) ↦ (𝑎 + (𝑚 · 𝑑))) = ran (𝑚 ∈ (0...(𝐾 − 1)) ↦ (𝑎 + (𝑚 · 𝑑))))
65mpoeq3dva 7446 . 2 (𝑘 = 𝐾 → (𝑎 ∈ ℕ, 𝑑 ∈ ℕ ↦ ran (𝑚 ∈ (0...(𝑘 − 1)) ↦ (𝑎 + (𝑚 · 𝑑)))) = (𝑎 ∈ ℕ, 𝑑 ∈ ℕ ↦ ran (𝑚 ∈ (0...(𝐾 − 1)) ↦ (𝑎 + (𝑚 · 𝑑)))))
7 df-vdwap 16915 . 2 AP = (𝑘 ∈ ℕ0 ↦ (𝑎 ∈ ℕ, 𝑑 ∈ ℕ ↦ ran (𝑚 ∈ (0...(𝑘 − 1)) ↦ (𝑎 + (𝑚 · 𝑑)))))
8 nnex 12168 . . 3 ℕ ∈ V
98, 8mpoex 8037 . 2 (𝑎 ∈ ℕ, 𝑑 ∈ ℕ ↦ ran (𝑚 ∈ (0...(𝐾 − 1)) ↦ (𝑎 + (𝑚 · 𝑑)))) ∈ V
106, 7, 9fvmpt 6950 1 (𝐾 ∈ ℕ0 → (AP‘𝐾) = (𝑎 ∈ ℕ, 𝑑 ∈ ℕ ↦ ran (𝑚 ∈ (0...(𝐾 − 1)) ↦ (𝑎 + (𝑚 · 𝑑)))))
Colors of variables: wff setvar class
Syntax hints:  wi 4  w3a 1086   = wceq 1540  wcel 2109  cmpt 5183  ran crn 5632  cfv 6499  (class class class)co 7369  cmpo 7371  0cc0 11044  1c1 11045   + caddc 11047   · cmul 11049  cmin 11381  cn 12162  0cn0 12418  ...cfz 13444  APcvdwa 16912
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 2008  ax-8 2111  ax-9 2119  ax-10 2142  ax-11 2158  ax-12 2178  ax-ext 2701  ax-rep 5229  ax-sep 5246  ax-nul 5256  ax-pow 5315  ax-pr 5382  ax-un 7691  ax-cnex 11100  ax-1cn 11102  ax-addcl 11104
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3or 1087  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2066  df-mo 2533  df-eu 2562  df-clab 2708  df-cleq 2721  df-clel 2803  df-nfc 2878  df-ne 2926  df-ral 3045  df-rex 3054  df-reu 3352  df-rab 3403  df-v 3446  df-sbc 3751  df-csb 3860  df-dif 3914  df-un 3916  df-in 3918  df-ss 3928  df-pss 3931  df-nul 4293  df-if 4485  df-pw 4561  df-sn 4586  df-pr 4588  df-op 4592  df-uni 4868  df-iun 4953  df-br 5103  df-opab 5165  df-mpt 5184  df-tr 5210  df-id 5526  df-eprel 5531  df-po 5539  df-so 5540  df-fr 5584  df-we 5586  df-xp 5637  df-rel 5638  df-cnv 5639  df-co 5640  df-dm 5641  df-rn 5642  df-res 5643  df-ima 5644  df-pred 6262  df-ord 6323  df-on 6324  df-lim 6325  df-suc 6326  df-iota 6452  df-fun 6501  df-fn 6502  df-f 6503  df-f1 6504  df-fo 6505  df-f1o 6506  df-fv 6507  df-ov 7372  df-oprab 7373  df-mpo 7374  df-om 7823  df-1st 7947  df-2nd 7948  df-frecs 8237  df-wrecs 8268  df-recs 8317  df-rdg 8355  df-nn 12163  df-vdwap 16915
This theorem is referenced by:  vdwapf  16919  vdwapval  16920
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