# Morse theory

## English[edit]

### Etymology[edit]

Based on the work of Marston Morse.

### Noun[edit]

- (mathematics) The study of differentiable functions, the domain of each of which is a manifold and the codomain is the real line.
**March 14, 2018**, Roger Penrose writing in*The Guardian*,*'Mind over matter': Stephen Hawking – obituary*- […] the spaces that are used in Einstein’s theory are really pseudo-Riemannian and the relevant
**Morse theory**differs in subtle but important ways.

- […] the spaces that are used in Einstein’s theory are really pseudo-Riemannian and the relevant