Results 31 to 40 of about 12,637 (295)

Singularities of Indefinite Hypersurfaces and Indefinite Surfaces along Timelike Curves in Nullcone with Index Two

Journal of Function Spaces, 2018
In this paper, a class of indefinite hypersurfaces and a class of indefinite surfaces generated by timelike curves located in nullcone in 4-dimensional semi-Euclidean space with index 2 are discussed. Using the unfolding theory in singularity theory, the
Xue Song, Zhigang Wang
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Stanley Depth of the Edge Ideal of Extended Gear Networks and Application in Circuit Analysis

Journal of Mathematics, 2022
Graph theory is widely used in power network analysis, complex network, and engineering calculation. Stanley depth is a geometric invariant of the module which is closely related to an algebraic invariant called depth of the module.
Guiling Zeng, Muhammad Mobeen Munir, Raheel Farooki, Muhammad Athar, Jia Bao Liu   +4 more
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Relative geometric invariant theory

L’Enseignement Mathématique, 2021
Relative geometric invariant theory is an invariant theory for equivariant projective morphisms between algebraic varieties endowed with an action of a reductive linear algebraic group. We will give brief accounts of the basic results of relative geometric invariant theory and present alternative proofs for recent results obtained by Halle, Hulek, and ...
openaire   +1 more source

Stratification of singular hyperkähler quotients

Complex Manifolds, 2022
Hyperkähler quotients by non-free actions are typically singular, but are nevertheless partitioned into smooth hyperkähler manifolds. We show that these partitions are topological stratifications, in a strong sense.
Mayrand Maxence
doaj   +1 more source

Extremal Gromov-Witten invariants of the Hilbert scheme of $3$ Points

Forum of Mathematics, Sigma, 2023
We determine all the extremal Gromov-Witten invariants of the Hilbert scheme of $3$ points on a smooth projective complex surface. Our result for the genus- $1$ case verifies a conjecture that we propose for the genus- $1$ extremal ...
Jianxun Hu, Zhenbo Qin
doaj   +1 more source

Higher-form symmetries in 5d

Journal of High Energy Physics, 2020
We study higher-form symmetries in 5d quantum field theories, whose charged operators include extended operators such as Wilson line and ’t Hooft operators. We outline criteria for the existence of higher-form symmetries both from a field theory point of
David R. Morrison, Sakura Schäfer-Nameki, Brian Willett   +2 more
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Stringy (Galilei) Newton-Hooke Chern-Simons gravities

Journal of High Energy Physics, 2019
We construct Chern-Simons gravities in (2 + 1)-dimensional space-time considering the Stringy Galilei algebra both with and without non-central extensions.
Luis Avilés, Joaquim Gomis, Diego Hidalgo   +2 more
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Instantons and geometric invariant theory [PDF]

Communications in Mathematical Physics, 1984
By the theorem of Atiyah-Ward (anti-)self-dual Yang-Mills potentials on \(S^ 4\) correspond to certain holomorphic vector bundles on \({\mathbb{P}}_ 3({\mathbb{C}})\) via the twistor fibering \({\mathbb{P}}_ 3({\mathbb{C}})\to S^ 4\). In this paper a new correspondence is established by considering instead holomorphic vector bundles on \({\mathbb{P}}_ ...
openaire   +2 more sources

Quasi-Kahler Chern-flat manifolds and complex 2-step nilpotent Lie algebras [PDF]

, 2012
The study of quasi-Kaehler Chern-flat almost Hermitian manifolds is strictly related to the study of anti-bi-invariant almost complex Lie algebras.
Lauret, J., Di Scala, Antonio Jose', Vezzoni, L.   +2 more
core   +1 more source

The Geometric Proca Field in Weyl Gauge-Invariant Theory

Universe
We present a detailed study on the geometrization of the Proca field in the so-called Weyl Gauge-Invariant Theory, shedding new light on the physical interpretation of the Weyl field. We first describe the field equations of the theory.
M. Duarte, T. A. T. Sanomiya, F. Dahia, C. Romero   +3 more
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