Properties of the map associated with recovering of the Sturm-Liouville operator by its spectral function. Uniform stability in the scale of Sobolev spaces
PT symmetry and Weyl asymptotics
Pure Point Spectrum of the Floquet Hamiltonian for the Quantum Harmonic Oscillator Under Time Quasi- Periodic Perturbations
Pushnitski's $μ$-invariant and Schrödinger operators with embedded eigenvalues