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Theorem prmnn 11827
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 11826 . 2 (𝑃 ∈ ℙ ↔ (𝑃 ∈ ℕ ∧ {𝑧 ∈ ℕ ∣ 𝑧𝑃} ≈ 2o))
21simplbi 272 1 (𝑃 ∈ ℙ → 𝑃 ∈ ℕ)
Colors of variables: wff set class
Syntax hints:  wi 4  wcel 1481  {crab 2421   class class class wbr 3937  2oc2o 6315  cen 6640  cn 8744  cdvds 11529  cprime 11824
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-io 699  ax-5 1424  ax-7 1425  ax-gen 1426  ax-ie1 1470  ax-ie2 1471  ax-8 1483  ax-10 1484  ax-11 1485  ax-i12 1486  ax-bndl 1487  ax-4 1488  ax-17 1507  ax-i9 1511  ax-ial 1515  ax-i5r 1516  ax-ext 2122
This theorem depends on definitions:  df-bi 116  df-3an 965  df-tru 1335  df-nf 1438  df-sb 1737  df-clab 2127  df-cleq 2133  df-clel 2136  df-nfc 2271  df-ral 2422  df-rab 2426  df-v 2691  df-un 3080  df-sn 3538  df-pr 3539  df-op 3541  df-br 3938  df-prm 11825
This theorem is referenced by:  prmz  11828  prmssnn  11829  nprmdvds1  11856  coprm  11858  euclemma  11860  prmdvdsexpr  11864  cncongrprm  11871  phiprmpw  11934
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