ASYMPTOTIC BEHAVIOR OF THE EIGENVALUES OF AN ANHARMONIC OSCILLATOR
N. M. Kostenko · Mathematics of the USSR-Sbornik · 1970
In this paper we study the properties of the spectrum of the boundary-value problem Let be the points of the spectrum of this problem, arranged in order of increasing absolute value. Our main result is Theorem. Let satisfy the conditions Then for any for Bibliography: 2 items.