Hark! The Herald Angels Sing

Or : Multiplying by . The beginning of complex numbers is often attributed to Cardano (1501 – 1576).  Complex numbers provide a solution to the equation . They are an extension of the number system [more…]

The words of the carol occur in three broadsides published in Birmingham in the early nineteenth century. An early mention of the carol’s title occurs in William Hone’s 1823 work Ancient Mysteries Described, which includes [more…]

I know there’s plenty of former Pusser types on GP, and even a few who have sailed under the red duster. They’ll all be familiar with the Christmas routines for their respective outfits. I thought [more…]