Users' Mathboxes Mathbox for Alexander van der Vekens < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >   Mathboxes  >  gboodd Structured version   Visualization version   GIF version

Theorem gboodd 48039
Description: An odd Goldbach number is odd. (Contributed by AV, 26-Jul-2020.)
Assertion
Ref Expression
gboodd (𝑍 ∈ GoldbachOdd → 𝑍 ∈ Odd )

Proof of Theorem gboodd
StepHypRef Expression
1 gbogbow 48038 . 2 (𝑍 ∈ GoldbachOdd → 𝑍 ∈ GoldbachOddW )
2 gbowodd 48037 . 2 (𝑍 ∈ GoldbachOddW → 𝑍 ∈ Odd )
31, 2syl 17 1 (𝑍 ∈ GoldbachOdd → 𝑍 ∈ Odd )
Colors of variables: wff setvar class
Syntax hints:  wi 4  wcel 2114   Odd codd 47907   GoldbachOddW cgbow 48028   GoldbachOdd cgbo 48029
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-ext 2709
This theorem depends on definitions:  df-bi 207  df-an 396  df-tru 1545  df-ex 1782  df-sb 2069  df-clab 2716  df-cleq 2729  df-clel 2812  df-rex 3062  df-rab 3401  df-v 3443  df-gbow 48031  df-gbo 48032
This theorem is referenced by: (None)
  Copyright terms: Public domain W3C validator