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We develop techniques to construct explicit symplectic Lefschetz fibrations over the 2-sphere with any prescribed signature and any spin type when the signature is divisible by 16. This solves a long-standing conjecture on the existence of…

Geometric Topology · Mathematics 2020-10-23 R. Inanc Baykur , Noriyuki Hamada

We prove a Lefschetz hypersurface theorem for abelian fundamental groups allowing wild ramification along some divisor. In fact, we show that isomorphism holds if the degree of the hypersurface is large relative to the ramification along…

Algebraic Geometry · Mathematics 2023-05-12 Moritz Kerz , Shuji Saito

This (partially expository) paper discusses Lagrangian Floer cohomology in the context of Lefschetz fibrations, with emphasis on the algebraic structures encountered there. In addition to the well-known directed A_infinity algebras which…

Symplectic Geometry · Mathematics 2016-02-09 Paul Seidel

We survey Lagrangian fibrations of holomorphic symplectic varieties, both compact and non-compact, whose fibres are Jacobians and Prym varieties.

Algebraic Geometry · Mathematics 2021-12-28 Justin Sawon

This article gives a brief summary on recently obtained classical lagrangians for the nonminimal fermion sector of the Standard-Model Extension (SME). Such lagrangians are adequate descriptions of classical particles that are subject to a…

High Energy Physics - Phenomenology · Physics 2016-07-22 M. Schreck

We develop an invariant local theory of Lorentz surfaces in pseudo-Euclidean 4-space by use of a linear map of Weingarten type. We find a geometrically determined moving frame field at each point of the surface and obtain a system of…

Differential Geometry · Mathematics 2017-04-27 Yana Aleksieva , Georgi Ganchev , Velichka Milousheva

We characterize the regularity of an FI-module using the derivative functors.

K-Theory and Homology · Mathematics 2024-06-13 Cihan Bahran

We provide a characterization of Symplectic Grassmannians in terms of their Varieties of Minimal Rational Tangents.

Algebraic Geometry · Mathematics 2019-02-13 Gianluca Occhetta , Luis E. Solá Conde , Kiwamu Watanabe

By carrying out refined point-wise estimates for the mean curvature, we prove better rigidity theorems of Lagrangian and symplectic translating solitons.

Differential Geometry · Mathematics 2024-12-19 Hongbing Qiu

The Universal Field Equations, recently constructed as examples of higher dimensional dynamical systems which admit an infinity of inequivalent Lagrangians are shown to be linearised by a Legendre transformation. This establishes the…

High Energy Physics - Theory · Physics 2009-10-22 David B. Fairlie , Jan Govaerts

We construct fermionic Lagrangians with anisotropic scaling z=2, the natural counterpart of the usual z=2 Lifshitz field theories for scalar fields. We analyze the issue of chiral symmetry, construct the Noether axial currents and discuss…

High Energy Physics - Theory · Physics 2013-05-30 H. Montani , F. A. Schaposnik

We construct a family of non-geometric Bridgeland stability conditions on certain wrapped Fukaya categories, using homological mirror symmetry and categorical K\"unneth formulae. These stability conditions correspond to certain holomorphic…

Symplectic Geometry · Mathematics 2026-03-23 Yu-Wei Fan

We introduce Artinian Gorenstein algebras defined by the face posets of regular polyhedra. We consider the strong Lefschetz property and Hodge--Riemann relation for the algebras. We show the strong Lefschetz property of the algebras for all…

Commutative Algebra · Mathematics 2020-11-30 Akiko Yazawa

In this paper, we study the Lagrangian F-stability and Hamiltonian F-stability of Lagrangian self-shrinkers. We prove a characterization theorem for the Hamiltonian F-stability of $n$-dimensional complete Lagrangian self-shrinkers without…

Differential Geometry · Mathematics 2014-03-17 Liuqing Yang

We formulate a conjecture which describes the Fukaya category of an exact Lefschetz fibration defined by a Laurent polynomial in two variables in terms of a pair consisting of a consistent dimer model and a perfect matching on it. We prove…

Algebraic Geometry · Mathematics 2013-07-04 Kazushi Ueda , Masahito Yamazaki

The Euler-Lagrange equations for some class of gravitational actions are calculated by means of Palatini principle. Polynomial structures with Einstein metrics appear among extremals of this variational problem.

General Relativity and Quantum Cosmology · Physics 2007-05-23 Andrzej Borowiec

In this paper we prove a Wiener-type characterization of boundary regularity, in the spirit of a classical result by Landis, for a class of evolutive H\"ormander operators. We actually show the validity of our criterion for a larger class…

Analysis of PDEs · Mathematics 2019-11-27 Giulio Tralli , Francesco Uguzzoni

In the framework of finite order variational sequences a new class of Lagrangians arises, namely, \emph{special} Lagrangians. These Lagrangians are the horizontalization of forms on a jet space of lower order. We describe their properties…

Mathematical Physics · Physics 2007-05-23 M. Palese , R. Vitolo

A novel method to make Lagrangians Galilean invariant is developed. The method, based on null Lagrangians and their gauge functions, is used to demonstrate the Galilean invariance of the Lagrangian for Newton's law of inertia. It is…

Mathematical Physics · Physics 2020-07-22 Z. E. Musielak , T. B. Watson

The model with the fermions coupled in the non - minimal way to the gauge theory of Lorentz group is considered. The lattice regularization is suggested. It is argued that this model may exist in the phase with broken chiral symmetry and…

High Energy Physics - Lattice · Physics 2013-08-16 M. A. Zubkov