Over the course of his distinguished career, Robert Strichartz (1943-2021) had a substantial impact on the field of analysis with his deep, original results in classical harmonic, functional, and spectral analysis, and in the newly developed analysis on fractals. This is the second volume of a tribute to Strichartz' work and legacy, featuring chapters written by his colleagues and friends that explore his mathematical contributions, as well as some of the latest developments in these areas.