Analytic Transformations of Smooth Submanifolds, a Math Seminar which was organized by the Department of Mathematics and Statistics - Faculty of Natural and Applied Sciences at NDU, Main Campus, on March 16, discussed the following general question:
How does the (pseudo) group of local analytic diffeomorphisms of the euclidean space act on submanifolds which are smooth, but not necessarily real-analytic? It turns out that various interesting phenomena can arise.
Some of them were discussed by Dr. Giuseppe Sala (AUB, Lebanon).