Konstantin I. Oskolkov
1. Fourier analysis, approximation theory (by classical polynomials,
and splines, ridge functions
- in integral metrics, and almost
everywhere; optimal quadrature formulas).
2. Oscillatory sums and integrals, analytic number theory - in
applications to partial differential equations
type, chaotic features of solutions.
3. Optimal control theory.
4. True life, life in general, and the life abroad - in particular.