2 papers
physics.comp-ph2005
Numerical study of high frequency asymptotics of the symbol of the Dirichlet-to-Neumann operator in 2D diffraction problems
Margo Kondratieva, Sergey Sadov
A high-frequency asymptotics of the symbol of the Dirichlet-to-Neumann map, treated as a periodic pseudodifferential operator, in 2D diffraction problems is discussed. Numerical re…
math.DS2004
Two-system of a Hamiltonian system
M. F. Kondratieva, S. Yu. Sadov
For a Hamiltonian system in R^{2n}, its two-system is defined in the phase space R^{2n} x sp(2n,R). In a sense, it is a combination of the original system and its system in variati…