Abstract:
For large values of the modulus of the spectral parameter, we obtain and analyze the asymptotics of solutions of the standard Sturm–Liouville equation with a piecewise integer potential on a general rectifiable curve lying in the complex plane and having a finite number of points at which the solutions and/or their derivatives have discontinuities polynomially depending on the spectral parameter. For decaying boundary conditions that also depend on the spectral parameter polynomially, we examine the spectrum of the corresponding Sturm–Liouville operator.
Keywords:Sturm–Liouville equation on a curve, discontinuity condition for solutions, piecewise integral potential, asymptotics of solutions, asymptotics of the spectrum.