## Functional analysis in the middle ages

Exerpt of a 1458 copy of  De Figura seu imagine mundi  by Louis de Langle who first worked out the shapes of the 2-dim unit $\ell^p$ spheres for $p=1, 2, \infty$.

### One Response to “Functional analysis in the middle ages”

1. dcs24 Says:

Reblogged this on Daniel C. Sutton.