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Theorem uzf 9907
Description: The domain and codomain of the upper integers function. (Contributed by Scott Fenton, 8-Aug-2013.) (Revised by Mario Carneiro, 3-Nov-2013.)
Assertion
Ref Expression
uzf :ℤ⟶𝒫 ℤ

Proof of Theorem uzf
Dummy variables 𝑗 𝑘 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 ssrab2 3333 . . . 4 {𝑘 ∈ ℤ ∣ 𝑗𝑘} ⊆ ℤ
2 zex 9636 . . . . 5 ℤ ∈ V
32elpw2 4291 . . . 4 ({𝑘 ∈ ℤ ∣ 𝑗𝑘} ∈ 𝒫 ℤ ↔ {𝑘 ∈ ℤ ∣ 𝑗𝑘} ⊆ ℤ)
41, 3mpbir 146 . . 3 {𝑘 ∈ ℤ ∣ 𝑗𝑘} ∈ 𝒫 ℤ
54rgenw 2605 . 2 𝑗 ∈ ℤ {𝑘 ∈ ℤ ∣ 𝑗𝑘} ∈ 𝒫 ℤ
6 df-uz 9905 . . 3 = (𝑗 ∈ ℤ ↦ {𝑘 ∈ ℤ ∣ 𝑗𝑘})
76fmpt 5852 . 2 (∀𝑗 ∈ ℤ {𝑘 ∈ ℤ ∣ 𝑗𝑘} ∈ 𝒫 ℤ ↔ ℤ:ℤ⟶𝒫 ℤ)
85, 7mpbi 145 1 :ℤ⟶𝒫 ℤ
Colors of variables: wff set class
Syntax hints:  wcel 2209  wral 2528  {crab 2532  wss 3220  𝒫 cpw 3688   class class class wbr 4128  wf 5371  cle 8355  cz 9627  cuz 9904
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  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-sep 4247  ax-pow 4309  ax-pr 4344  ax-cnex 8264  ax-resscn 8265
This theorem depends on definitions:  df-bi 117  df-3or 1010  df-3an 1011  df-tru 1405  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-ral 2533  df-rex 2534  df-rab 2537  df-v 2823  df-sbc 3052  df-un 3224  df-in 3226  df-ss 3233  df-pw 3690  df-sn 3714  df-pr 3715  df-op 3717  df-uni 3934  df-br 4129  df-opab 4191  df-mpt 4192  df-id 4436  df-xp 4778  df-rel 4779  df-cnv 4780  df-co 4781  df-dm 4782  df-rn 4783  df-res 4784  df-ima 4785  df-iota 5335  df-fun 5377  df-fn 5378  df-f 5379  df-fv 5383  df-ov 6082  df-neg 8494  df-z 9628  df-uz 9905
This theorem is referenced by:  eluzel2  9909  uzn0  9921  uzin2  11736  rexanuz  11737  climmpt  12049  lmbr2  15298  lmff  15333
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