Oscillation criteria for second order self adjoint differential systems
Oscillation criteria for second order self adjoint differential systems
Let X be a Hubert space and let 3ί = &(%, X) be the Banach algebra of bounded linear operators from 'M to 'M with the usual operator norm.Let .:/be the subspace of $ consisting of the self adjoint operators, and consider the second order differential system (1)Y"+P(x)Y = 0 …