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In this work we prove a Brunn-Minkowski-type inequality in the context of symplectic geometry and discuss some of its applications.

Symplectic Geometry · Mathematics 2007-12-27 Shiri Artstein-Avidan , Yaron Ostrover

We use the generalized Minkowski billiard characterization of the EHZ-capacity of Lagrangian products in order to reprove that the $4$-dimensional Viterbo conjecture holds for the Lagrangian products (any triangle/parallelogram in…

Dynamical Systems · Mathematics 2022-09-22 Daniel Rudolf

We describe a natural $q$-deformation of Fock and Goncharov's canonical basis for the algebra of regular functions on a cluster variety associated to a quiver of type $A$. We then describe an extension of this construction involving a…

Quantum Algebra · Mathematics 2022-02-25 Dylan G. L. Allegretti

The third named author has been developing a theory of "higher" symplectic capacities. These capacities are invariant under taking products, and so are well-suited for studying the stabilized embedding problem. The aim of this note is to…

Symplectic Geometry · Mathematics 2022-02-21 Dan Cristofaro-Gardiner , Richard Hind , Kyler Siegel

A stable generalized complex structure is one that is generically symplectic but degenerates along a real codimension two submanifold, where it defines a generalized Calabi-Yau structure. We introduce a Lie algebroid which allows us to view…

Differential Geometry · Mathematics 2023-05-26 Gil R. Cavalcanti , Marco Gualtieri

We herein develop a theory of contiguity in the quantum domain based upon a novel quantum analogue of the Lebesgue decomposition. The theory thus formulated is pertinent to the weak quantum local asymptotic normality introduced in the…

Operator Algebras · Mathematics 2019-11-04 Akio Fujiwara , Koichi Yamagata

This work propose an alternative and systematic way to obtain a canonical Lagrangian formulation for rotational systems. This will be done in the symplectic framework and with the introduction of extra variables which enlarge the phase…

High Energy Physics - Theory · Physics 2010-11-19 C. Neves , W. Oliveira

We determine a precise necessary and sufficient condition for completeness of the Hamiltonian vector field associated to a homogeneous cubic polynomial on a symplectic plane.

Symplectic Geometry · Mathematics 2015-05-05 P. L. Robinson

We define a computational type theory combining the contentful equality structure of cartesian cubical type theory with internal parametricity primitives. The combined theory supports both univalence and its relational equivalent, which we…

Logic in Computer Science · Computer Science 2023-06-22 Evan Cavallo , Robert Harper

The relation between the pole quark mass and the $\overline{MS}$-renormalized mass is governed by an infrared renormalon singularity, which leads to an ambiguity of order $\Lambda_{QCD}$ in the definition of the pole mass. We use the…

High Energy Physics - Phenomenology · Physics 2009-10-28 M. Beneke

Quantization problems suggest that the category of symplectic manifolds and symplectomorphisms be augmented by the inclusion of canonical relations as morphisms. These relations compose well when a transversality condition is satisfied, but…

Symplectic Geometry · Mathematics 2009-11-24 Alan Weinstein

A 10-dimensional symplectic moduli space of torsion sheaves on the cubic 4-fold is constructed. It parametrizes the stable rank 2 vector bundles on the hypeplane sections of the cubic 4-fold which are obtained by Serre's construction from…

Algebraic Geometry · Mathematics 2007-05-23 D. Markushevich , A. S. Tikhomirov

We construct new families of symplectic capacities indexed by certain symmetric polynomials, defined using rational symplectic field theory. In particular, we introduce a sequence of capacities based on an L-infinity structure on linearized…

Symplectic Geometry · Mathematics 2025-12-24 Kyler Siegel

We provide a proof of strong normalisation for lambda+, a recently introduced, explicitly typed, non-deterministic lambda-calculus where isomorphic propositions are identified. Such a proof is a non-trivial adaptation of the reducibility…

Logic in Computer Science · Computer Science 2014-01-09 Alejandro Díaz-Caro , Gilles Dowek

We consider an overdetermined problem for the Finsler Laplacian in the exterior of a convex domain in $\mathbb{R}^N$, establishing a symmetry result for the anisotropic capacitary potential. Our result extends the one of W. Reichel [Arch.…

Analysis of PDEs · Mathematics 2016-03-01 Chiara Bianchini , Giulio Ciraolo , Paolo Salani

We consider the Kepler potential and its relatives $q\mapsto -\|q\|^{-2(1-1/n)}$, $n\in\mathbb{N}$ in arbitrary dimension $d$. We derive a unique real-analytic symplectic extension of phase space on which the Hamiltonian flow is complete…

Dynamical Systems · Mathematics 2024-08-05 Andreas Knauf

A final goal for thimble regularization of lattice field theories is the application to lattice QCD and the study of its phase diagram. Gauge theories pose a number of conceptual and algorithmic problems, some of which can be addressed even…

High Energy Physics - Lattice · Physics 2015-12-21 F. Di Renzo , G. Eruzzi

In this note we link symplectic and convex geometry by relating two seemingly different open conjectures: a symplectic isoperimetric-type inequality for convex domains, and Mahler's conjecture on the volume product of centrally symmetric…

Metric Geometry · Mathematics 2015-01-14 Shiri Artstein-Avidan , Roman Karasev , Yaron Ostrover

The interplay between the algebraic structure (operator algebras) for the quantum observables and the convex structure of the state space has been explored for a long time and most advanced results are due to Alfsen and Shultz. Here we…

Quantum Physics · Physics 2024-11-28 Gerd Niestegge

This article studies the N-vortex problem in the plane with positive vorticities. After an investigation of some properties for normalised relative equilibria of the system, we use symplectic capacity theory to show that, there exist…

Dynamical Systems · Mathematics 2018-09-26 Qun Wang