The traditional conference topics are the following: mathematical problems of diffraction and wave propagation theory; boundary-value contact problems arising in acoustics and electrodynamics; propagation of waves in inhomogeneous, stochastic, and composite media; wave phenomena in meta-materials and nano-structures; theory of wave-guides and resonators; numerical methods; nonlinear waves. During the past few years several new topics were added, namely: water waves; homogenization; spectral theory of operators; wavelet analysis

Days on diffraction'2021 : abstracts International conference (Saint Petersburg, May 31-June 4, 2021) / Steklov Mathematical Institute of Russian Academy of Sciences, St. Petersburg Department [et al.] : PDMI,, 2021.