William Clifford
lived from 1845 to 1879

**William Clifford** was an English mathematician who studied non-euclidean geometry arguing that energy and matter are simply different types of curvature of space. He introduced what is now called a Clifford algebra which generalises Grassmann's exterior algebra.

*Find out more at*:

http://mathshistory.st-andrews.ac.uk/Biographies/Clifford.html