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Special issue on Contemporary Trends in Hamiltonian Geometry in honor of Susan Tolman for her 60th birthday
The Guest Editors for this special issue are
Originating in classical mechanics, Hamiltonian geometry is currently an active and flourishing area of symplectic geometry with many connections to other fields, both within and outside mathematics. This special issue presents fundamental new results on Hamiltonian group actions on symplectic manifolds, as well as recent applications of Hamiltonian techniques to algebraic, complex, and symplectic geometry. The key topics include equivariant symplectic topology, cohomological and homotopical invariants, the interplay between Hamiltonian actions and algebraic invariants, bridges between soft (equivariant) and hard (holomorphic) methods, Lie theory, representation theory, integrable systems, and quantization. These are areas influenced by the work of Susan Tolman, and this issue is dedicated to her on the occasion of her 60th birthday. This special issue follows a conference held in honor of Susan Tolman's 60th birthday, which took place in Les Diablerets, Switzerland, from September 28th to October 2nd, 2026. There is no limit to the length of an article. Deadline for paper submission is July 1, 2027. How to Submit an Article to the Issue. All articles will go through the standard peer reviewing procedure of SIGMA. If you have your paper ready earlier than the deadline, we encourage you to send it now. The reviewing process starts once the paper is submitted and we will publish the paper as soon as the positive publication decision is made. The paper will be indexed in the relevant databases as soon as it is published without waiting for completion of the special issue.
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