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We collect geometric properties of the all-genus real Gromov-Witten theory and provide updates on its development since its introduction in 2015. We bring attention to a modification of the original construction of this theory which is…

辛几何 · 数学 2023-11-21 Penka Georgieva , Aleksey Zinger

A scale invariant theory of gravity, containing at most two derivatives, requires, in addition to the Riemannian metric, a scalar field and (or) a gauge field. The gauge field is usualy used to construct the affine connection of Weyl…

高能物理 - 理论 · 物理学 2024-02-08 N. Mohammedi

In this paper, we study the relation between geodesic and harmonic mappings. Harmonic mappings are defined between Riemannian manifolds as critical points of the energy functional, on the other hand, geodesic mappings are defined in a more…

微分几何 · 数学 2019-11-01 Stanislav Hronek

Motivated by the analogies between the projective and the almost quaternionic geometries, we study the generalized planar curves and mappings. We follow, recover, and extend the classical approach as developed by Mikes and Sinyukov. Then we…

微分几何 · 数学 2007-05-23 Jaroslav Hrdina , Jan Slovak

Convex geometry has recently attracted great attention as a framework to formulate general probabilistic theories. In this framework, convex sets and affine maps represent the state spaces of physical systems and the possible dynamics,…

几何拓扑 · 数学 2015-06-10 Gen Kimura , Koji Nuida

We study some homological invariants of a given generalized bound path algebra in terms of those of the algebras used in its construction. We discuss the particular case where the algebra is a generalized path algebra and give conditions…

表示论 · 数学 2024-03-27 Viktor Chust , Flávio U. Coelho

We define a new topological invariant of line arrangements in the complex projective plane. This invariant is a root of unity defined under some combinatorial restrictions for arrangements endowed with some special torsion character on the…

几何拓扑 · 数学 2018-05-04 Enrique Artal Bartolo , Vincent Florens , Benoît Guerville-BallÉ

We introduce an (equi-)affine invariant diffusion geometry by which surfaces that go through squeeze and shear transformations can still be properly analyzed. The definition of an affine invariant metric enables us to construct an invariant…

计算机视觉与模式识别 · 计算机科学 2010-12-30 Dan Raviv , Alexander M. Bronstein , Michael M. Bronstein , Ron Kimmel , Nir Sochen

We define and investigate a geometric object, called an associative geometry, corresponding to an associative algebra (and, more generally, to an associative pair). Associative geometries combine aspects of Lie groups and of generalized…

环与代数 · 数学 2010-05-19 Wolfgang Bertram , Michael Kinyon

We define and investigate a geometric object, called an associative geometry, corresponding to an associative algebra (and, more generally, to an associative pair). Associative geometries combine aspects of Lie groups and of generalized…

环与代数 · 数学 2010-05-31 Wolfgang Bertram , Michael Kinyon

We prove that Donaldson-Thomas type invariants are equal to weighted Euler characteristics of their moduli spaces. In particular, such invariants depend only on the scheme structure of the moduli space, not the symmetric obstruction theory…

代数几何 · 数学 2007-05-23 Kai Behrend

A generalized semitoric system F:=(J,H): M --> R^2 on a symplectic 4-manifold is an integrable system whose essential properties are that F is a proper map, its set of regular values is connected, J generates an S^1-action and is not…

辛几何 · 数学 2013-07-30 Álvaro Pelayo , Tudor S. Ratiu , San Vũ Ngoc

We set up some foundations of generalised scheme theory related to new incompressible symmetric tensor categories. This is analogous to the relation between super schemes and the category of super vector spaces.

代数几何 · 数学 2023-11-07 Kevin Coulembier

Correlation matrices are standardized covariance matrices. They form an affine space of symmetric matrices defined by setting the diagonal entries to one. We study the geometry of maximum likelihood estimation for this model and linear…

统计理论 · 数学 2021-02-02 Carlos Améndola , Piotr Zwiernik

In this work we define the trajectory coset of an affine map and use it to study the similarity classes of affine maps. We use the trajectory coset, a tool which allows us to gain a deeper understanding of the interplay between geometry…

群论 · 数学 2020-09-15 Arieh Yakir

In this paper, we deal with a generalization of the geometry of parallelizable manifolds, or the absolute parallelism (AP-) geometry, in the context of generalized Lagrange spaces. All geometric objects defined in this geometry are not only…

广义相对论与量子宇宙学 · 物理学 2008-05-02 M. I. Wanas , N. L. Youssef , A. M. Sid-Ahmed

One considers certain degenerations of the generic symmetric matrix over a field $k$ of characteristic zero and the main structures related to the determinant $f$ of the matrix, such as the ideal generated by its partial derivatives, the…

交换代数 · 数学 2018-04-04 Rainelly Cunha , Zaqueu Ramos , Aron Simis

We introduce Hopf algebroid covariance on Woronowicz's differential calculus. Using it, we develop quite a general framework of noncommutative complex geometry that subsumes the one in [2]. We present transverse complex and K\"ahler…

量子代数 · 数学 2021-05-11 Suvrajit Bhattacharjee , Indranil Biswas , Debashish Goswami

We have revisited the gradient-flow in information geometry from the perspective of Weyl symmetry. The gradient-flow equations are derived from the proposed action which is invariant under the Weyl's gauge transformations. In Weyl…

广义相对论与量子宇宙学 · 物理学 2025-08-04 Tatsuaki Wada , Sousuke Noda

The main goal of this article is to construct some geometric invariants for the topology of the set $\mathcal{F}$ of flat connections on a principal $G$-bundle $P\,\longrightarrow\, M$. Although the characteristic classes of principal…

微分几何 · 数学 2017-04-19 Indranil Biswas , Marco Castrillón López