Archive for January, 2015

London Life

In solidarity with the people of France, and in support of human civilization, Trafalgar Square an hour ago:

TrafalgarSquareLondonJeSuisCharlie-20150111

(Photo Credit: Boris Johnson, Mayor of London)




Category Theory in a nutshell

Category theory takes a bird’s eye view of mathematics. From high in the sky, details become invisible, but we can spot patterns that were impossible to detect from ground level.

The opening sentences from Tom Leinster [2014]: Basic Category Theory. Cambridge University Press. Cambridge Studies in Advanced Mathematics.




A Minimalist Nativity Scene

A minimalist Nativity scene, by Emilie Voirin:

VOIRIN-Emilie-NativitySet




Mattawamkeag, Maine

My high-school English teacher, Gary Whale, interviewed by ABC radio about the town of Yamba, NSW, Australia, available as a podcast.

image

Yamba Surf Club was founded in 1908. The photo shows Tommy Walker surfing at Yamba around 1911. (Photo by O. B. Notley, from Manly Life Saving Club Australian Surfing Museum.) The post title is a reference to an O. Henry story.