Preface.- Gérard Emch in memoriam.- The Gérard I knew for 60 years!.- Pseudo-bosons and Riesz bi-coherent states.- Entropy of completely positive maps and applications to quantum information theory.- Some comments on indistinguishable particles and interpretation of the quantum mechanical wave function.- Hyperbolic Flows and the Question of Quantum Chaos.- A New Proof of the Helton-Howe-Carey-Pincus Trace Formula.- Quasi-Classical Calculation of Eigenvalues – Examples and a Question.- Supergroup actions and harmonic analysis.- Representations of nilpotent Lie groups via measurable dynamical systems.- Symbolic interpretation of the Molien function: free and non-free modules of covariants.- Momentum Maps for Smooth Projective Unitary Representations.- Canonical representations for hyperboloids: an interaction with an overalgebra.- On p-adic colligations and `rational maps' of Bruhat-Tits trees.- Resonances for the Laplacian: the cases BC2 and C2 (except SO<0(p,2) with p>2 odd).- Howe's Correspondence and Characters.- Local inverse scattering.- Painlevé equations and supersymmetric quantum mechanics.- Change in energy eigenvalues against parameters.- Time dependent Pais-Uhlenbeck oscillator and its decomposition.- Quantum walks in low dimension.- Center-symmetric algebras and bialgebras: relevant properties and consequences.- N-point Virasoro algebras considered as Krichever-Novikov type algebras.- Star products on graded manifolds and α'-corrections to double field theory.- Adiabatic limit in Ginzburg-Landau and Seiberg-Witten equations.- Variational tricomplex and BRST theory.- Quantisation of Hitchin's moduli space of a non-orientable surface.- Ramadanov theorem for weighted Bergman kernels on complex manifolds.- A characterization of domains of holomorphy by means of their weighted Skwarczyński distance.- Science and its Constraints (an unfinished story).
