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11D09 - Number theory :: Diophantine equations :: Quadratic and bilinear equations

  1. centered hexagonal number owned by PrimeFan
  2. contraharmonic means and Pythagorean hypotenuses owned by pahio
  3. hexagonal number owned by PrimeFan
  4. integer contraharmonic means owned by pahio
  5. Pell's equation owned by rm50
  6. Pell's equation and simple continued fractions owned by Thomas Heye
  7. polygonal number owned by mathcam
  8. proof of Pythagorean triplet owned by Thomas Heye
  9. rational sine and cosine owned by pahio
  10. test for hexagonal numbers owned by PrimeFan

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