Observability for Schrödinger equations with quadratic Hamiltonians
Euler-Lagrange equation (9) against the solution . Finally, (18) is a consequence of the virial theorem: for ? > 0 we denote ? = ?3/2 ...
Nonlinear Dynamics and Systems Theorying Miciently resolvents. Our method is based on elimina- tion and uses resultant computations. Major drawbacks of resultant-based methods are extraneous ... Nonlinear Waves and Dispersive Equationsdifferent methods that the solution of the· general quintic equation can be effected by means of the ikosahedral irrationality combined with an accessory ... An introduction to the modern theory of equationsProblème de moments avec applications et estimations du spectre discret des opérateurs définis par des matrices infinies non bornées.
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