# Monthly Archives: May 2016

## Topological maps or topographic maps?

Originally posted on David Richeson: Division by Zero:

While surfing the web the other day I read an article in which the author refers to a “topological map.” I think it is safe to say that he meant to write…

## Cayley-Menger determinants

Originally posted on Complex Projective 4-Space:

Niccolo Fontana Tartaglia, whom you may recognise from having discovered Cardano’s solution to the general cubic equation, also discovered a generalisation of Heron’s formula to compute the volume of a tetrahedron: As you may…