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We survey some of the recent progress on complete gradient shrinking Ricci solitons, including the classifications in dimension three and asymptotic behavior of potential functions as well as volume growths of geodesic balls in higher…

Differential Geometry · Mathematics 2011-02-09 Huai-Dong Cao

In this paper we classify those three-dimensional Riemannian Lie groups which admit harmonic morphisms to surfaces.

Differential Geometry · Mathematics 2010-03-23 Sigmundur Gudmundsson , Martin Svensson

Let $(M^n,g,e^{-\phi}dV_g,e^{-\phi}dA_g,m)$ be a compact smooth metric measure space with boundary with $n\geqslant 3$. In this article, we consider several Yamabe-type problems on a compact smooth metric measure space with or without…

Differential Geometry · Mathematics 2022-09-29 Pak Tung Ho , Jinwoo Shin , Zetian Yan

We first prove that, unlike the biharmonic case, there exist triharmonic curves with nonconstant curvature in a suitable Riemannian manifold of arbitrary dimension. We then give the complete classification of triharmonic curves in surfaces…

Differential Geometry · Mathematics 2021-08-06 Stefano Montaldo , Alvaro Pampano

A general approach allowing to find the analytical expressions for equilibrium magnetic structures in small and flat magnetic nano-sized cylinders of arbitrary shape made of soft magnetic material is presented. The resulting magnetization…

Mesoscale and Nanoscale Physics · Physics 2015-06-24 Konstantin L. Metlov

We study a family of 3-dimensional Lorentz manifolds. Some members of the family are 0-curvature homogeneous, 1-affine curvature homogeneous, but not 1-curvature homogeneous. Some are 1-curvature homogeneous but not 2-curvature homogeneous.…

Differential Geometry · Mathematics 2007-05-23 P. Gilkey , S. Nikcevic

In this paper, we study gradient Ricci soitons on smooth orbifolds. We prove that the scalar curvature of a complete shrinking or steady gradient Ricci soliton on an orbifold is nonnegative. We also show that a complete…

Differential Geometry · Mathematics 2025-04-22 Yuxing Deng

We give a Lie-algebraic classification of third order quasilinear equations which admit non-trivial Lie point symmetries.

Exactly Solvable and Integrable Systems · Physics 2010-10-07 P. Basarab-Horwath , F. Gungor , V. Lahno

Two-dimensional (2D) equations describing the nonlinear interaction between upper-hybrid and dispersive magnetosonic waves are presented. Nonlocal nonlinearity in the equations results in the possibility of existence of stable 2D nonlinear…

Plasma Physics · Physics 2009-11-13 V. M. Lashkin

In a previous article (a joint work with J. Manoharmayum) the modularity of a large class of rigid Calabi-Yau threefolds was established. To make that result more explicit, we recall (and re-prove) a result of Serre giving a bound for the…

Number Theory · Mathematics 2007-05-23 Luis Dieulefait

In this paper we consider Yamabe type problem for higher order curvatures on manifolds with totally geodesic boundaries. We prove local gradient and second derivative estimates for solutions to the fully nonlinear elliptic equations…

Differential Geometry · Mathematics 2011-12-14 Yan He , Weimin Sheng

We prove that any noncompact $\kappa$-noncollapsed steady Ricci soliton with nonnegative curvature operator must be rotationally symmetric if it has a linear curvature decay.

Differential Geometry · Mathematics 2017-11-07 Yuxing Deng , Xiaohua Zhu

In the article we study the simple unital communitative three-dimensional algebras over an algebraically closed field of characteristic not equal to 2. It is proved that every simple unital communitative three-dimensional algebra of…

Rings and Algebras · Mathematics 2025-04-02 Vita Glizburg , Sergey Pchelintsev

In this article a complete description is given of the simple representations of a 3-dimensional Sklyanin algebra associated to a torsion point. In order to determine these irreducible representations, a review is given of classical results…

Representation Theory · Mathematics 2017-07-13 Kevin De Laet

Mirror symmetry suggests that on a Calabi-Yau 3-fold moduli spaces of stable bundles, especially those with degree zero and indivisible Chern class, might be smooth (i.e. unobstructed, though perhaps of too high a dimension). This is…

Algebraic Geometry · Mathematics 2016-05-10 R. P. Thomas

It is known that every 3-dimensional noetherian Calabi-Yau algebra generated in degree 1 is isomorphic to a Jacobian algebra of a superpotential. Recently, S. P. Smith and the first author classified all superpotentials whose Jacobian…

Rings and Algebras · Mathematics 2018-07-09 Izuru Mori , Kenta Ueyama

We consider three- and four-dimensional pseudo-Riemannian generalized symmetric spaces, whose invariant metrics were explicitly described in [15]. While four-dimensional pseudo-Riemannian generalized symmetric spaces of types A, C and D are…

Differential Geometry · Mathematics 2017-01-04 Giovanni Calvaruso , Eugenia Rosado

In this paper, we classify the nondegenerate ruled surfaces in the three-dimensional Lorentz-Minkowski space that are homothetic self-similar solutions for the inverse mean curvature flow. This classification shows the existence of two…

Differential Geometry · Mathematics 2023-08-24 Gregório Silva Neto , Vanessa Silva

The aim of this paper is to study new classes of Riemannian manifolds endowed with a smooth potential function, including in a general framework classical canonical structures such as Einstein, harmonic curvature and Yamabe metrics, and,…

Differential Geometry · Mathematics 2019-05-27 Giovanni Catino , Paolo Mastrolia

We find soliton solutions in five-dimensional gauged supergravity, where a circle degenerates smoothly in the core of the geometry. In the family of solutions we consider, we find no completely smooth supersymmetric solutions, but we find…

High Energy Physics - Theory · Physics 2009-11-11 Simon F. Ross