
1) Differential geometry
Found on
https://www.crosswordclues.com/clue/diffeology

In mathematics, a diffeology on a set declares what the smooth parametrizations in the set are. In some sense a diffeology generalizes the concept of smooth charts in a differentiable manifold. The concept was first introduced by Jean-Marie Souriau in the 1980s and developed first by his students Paul Donato (homogeneous spaces and coverings) and ...
Found on
http://en.wikipedia.org/wiki/Diffeology
No exact match found.