• Mathematical Style at this Site - a README file.

• The Moonfinder A volvelle to find the moon at various phases and times of day, now with versions for both hemispheres. v.0.2.
  
  
• Stereographic Projection-III: Astrolabe Errors. - Intrinsic errors in unequal hour lines on astrolabes 29 January 2013.
  
  
• Stereographic Projection-II: Spherical Trigonometry by Complex Numbers. and simplified slightly
  - Using complex numbers for the stereographic projection. Derivation of three formulae of spherical trigonometry.
  
  
• Stereographic Projection-I: Spherical Astronomy by Analytical Geometry. April 11, 2011.
  - Using analytical geometry for the stereographic projection.
  
  
• Intrinsic Errors of Traditional Moon Dials 
  
  
• Algebras of Digraphs and Posets.
  Giving an algebraic way of representing them.
  
  
• Partially Ordered Historical Events.
  An account for mathematicians.
  
  

• Style in Mathematical and Scientific Literature.
  Article in The English Miscellany, occasional publication of the English Department, St Stephen’s College, Delhi, before 1974.
  
  
• Reversed Ages.
  Pairs of ages such as 78, 87, with a simple study of their occurrence.
  
  
• Dr Stone’s Mathematical Aphorisms.
  
  
• Convert from Centigrade to Fahrenheit in your head.
  An exact method.
  
  
• Two Definitions of Partially Ordered Sets.
  Showing how they are equivalent.
• Two Definitions of Partially Ordered Sets.
  Showing how they are equivalent.

Last updated: 29 January 2013