Lie Groups, Geometry, and Representation Theory: A Tribute to the Life and Work of Bertram Kostant

Anthony Joseph, A Tribute to Bertram Kostant.- Anton Alekseev, Arkady Berenstein, Benjamin Hoffman, Yanpeng Li, Poisson Structures and Potentials.- Tomoyuki Arakawa, Kazuya Kawasetsu, Quasi-lisse Vertex Algebras and Modular Linear Differential Equations.- Roman Bezrukavnikov, Ivan Losev, On Dimension Growth of Modular Irreducible Representations of Semisimple Lie Algebras.- Alexander Braverman, David Kazhdan, Remarks on the Asymptotic Hecke Algebra.- Alexei Davydov, Pavel Etingof, Dmitri Nikshych, Autoequivalences of Tensor Categories Attached to Quantum Groups at Roots of 1.- Victor Ginzburg, Nil-Hecke Algebras and Whittaker $\mathscr{D}$-Modules.- V. Guillemin, A. Uribe, Z. Wang, Spectral Properties of Semi-classical Toeplitz Operators.- Anthony Joseph, Dual Kashiwara Functions for the $B(\infty)$ Crystal.- Victor G. Kac, Minoru Wakimoto, On Characters of Irreducible Highest Weight Modules of Negative Integer Level over Affine Lie Algebras.- Thomas Lam, Alexander Postnikov, Alcoved Polytopes II.- Ivan Losev, Representation Theory of Quantized Gieseker Varieties, I.- Jiang-Hua Lu, Yipeng Mi, Generalized Bruhat Cells and Completeness of Hamiltonian Flows of Kogan-Zelevinsky Integrable Systems.- G. Lusztig, On the Definition of Almost Characters.- Eckhard Meinrenken, Verlinde Formulas for Nonsimply Connected Groups.- Paul-Émile Paradan, Michèle Vergne, Equivariant Index of Twisted Dirac Operations and Semi-classical Limits.- Vladimir L. Popov, Modality of Representations and Packets for $\theta$-Groups.- N. Ressayre, Distributions on Homogeneous Spaces and Applications.- Jean-Pierre Serre, On the mod p reduction of orthogonal representations.