Hark! The Herald Angels Sing

At this time of year there are many traditions that people follow – school carol services and nativity plays; putting up a tree; lights on the front of the house; Black Friday then Cyber Monday; [more…]

The Silent Night Chapel (Stille-Nacht-Kapelle) is located in the town of Oberndorf bei Salzburg in the Austrian province of Salzburg, and is a monument to the Christmas carol Silent Night and its librettist, Joseph Mohr [more…]

Wilson’s Theorem is a test for primality.  It is inefficient for large numbers since factorials () grow very fast.  Nevertheless, it has its uses because of its simplicity. It was conjectured by Wilson and published [more…]