N. E. Sofronidis

collaborators

3 papers

math.GM2017

On geometry and mechanics

Nikolaos E. Sofronidis

Our purpose in this article is first, following [14], to find the topological upper limits of projections of secant planes to $C^{1}$ surfaces and the topological upper limits of p…

math.GM2017

Diffeomorphisms of the closed unit disc converging to the identity

Nikolaos E. Sofronidis

If $G$ is the group (under composition) of diffeomorphisms $f : D ˉ (0; 1) \to D ˉ (0; 1)$ of the closed unit disc $D ˉ (0; 1)$ which are the identity…

math.OC2015

Variational inequalities

Nikolaos E. Sofronidis

If $- \infty < α < β < \infty$ and $f \in C^{3} ([α, β] \times R^{2}, R)$ is bounded, while $y \in C^{2} ([α, β], R)$ solves the ty…