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Theorem prmnn 10492
Description: A prime number is a positive integer. (Contributed by Paul Chapman, 22-Jun-2011.)
Assertion
Ref Expression
prmnn (𝑃 ∈ ℙ → 𝑃 ∈ ℕ)

Proof of Theorem prmnn
Dummy variable 𝑧 is distinct from all other variables.
StepHypRef Expression
1 isprm 10491 . 2 (𝑃 ∈ ℙ ↔ (𝑃 ∈ ℕ ∧ {𝑧 ∈ ℕ ∣ 𝑧𝑃} ≈ 2𝑜))
21simplbi 268 1 (𝑃 ∈ ℙ → 𝑃 ∈ ℕ)
Colors of variables: wff set class
Syntax hints:  wi 4  wcel 1433  {crab 2352   class class class wbr 3785  2𝑜c2o 6018  cen 6242  cn 8039  cdvds 10195  cprime 10489
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 104  ax-ia2 105  ax-ia3 106  ax-io 662  ax-5 1376  ax-7 1377  ax-gen 1378  ax-ie1 1422  ax-ie2 1423  ax-8 1435  ax-10 1436  ax-11 1437  ax-i12 1438  ax-bndl 1439  ax-4 1440  ax-17 1459  ax-i9 1463  ax-ial 1467  ax-i5r 1468  ax-ext 2063
This theorem depends on definitions:  df-bi 115  df-3an 921  df-tru 1287  df-nf 1390  df-sb 1686  df-clab 2068  df-cleq 2074  df-clel 2077  df-nfc 2208  df-ral 2353  df-rab 2357  df-v 2603  df-un 2977  df-sn 3404  df-pr 3405  df-op 3407  df-br 3786  df-prm 10490
This theorem is referenced by:  prmz  10493  prmssnn  10494  nprmdvds1  10521  coprm  10523  euclemma  10525  prmdvdsexpr  10529  cncongrprm  10536
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