Recent Developments in Spectral and Approximation Theory

This book is a collection of recent developments in spectral and approximation theory. The results collected here were presented at the International Conference on Spectral and Approximation Theory (ICSAT-2023) which took place at Cochin University of Science and Technology in Kerala, India. The conference ICSAT-2023 focuses on two significant areas in mathematics: spectral theory and approximation theory.

The life and work of M. N. N. Namboodiri. - On the asymptotic eigenvalue distribution of matrices. - Singular value decomposition of unbounded absolutely minimum attaining operators. - A note on eigenvalues and singular values of variable Toeplitz matrices and matrix-sequences, with application to variable two-step BDF approximations to parabolic equations. - Operators in the Fock-Toeplitz algebra. - Wavelets on the interval: a short survey. - A survey of collectively compact sets of operators and compact operator version of Nayak s theorem. - Survey on the convexity of the Berezin range. - Novel fractional wavelet frame. - On multilinear extensions of mid p-summing operators.