108 citations · 189 across the 17 of their papers we have counts for
Showing 1999Show all
2 papers · 1 filter
math-ph1999★ 3 cited
The Levels of Quasiperiodic Functions on the plane, Hamiltonian Systems and Topology
S. P. Novikov
Topology of levels of the quasiperiodic functions with m=n+2 periods on the plane is studied. For the case of functions with m=4 periods full description is obtained for the open e…
math-ph1999
Discrete Schrodinger operators and topology
S. P. Novikov
This work is a continuation and extension of the note published in the Russian Math Surveys 1997 n 6. For any pair of solutions of the spectral problem for the second order selfadj…