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Related papers: Meridian Surfaces of Parabolic Type in the Four-di…

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We consider a special class of spacelike surfaces in the Minkowski 4-space which are one-parameter systems of meridians of the rotational hypersurface with timelike or spacelike axis. We call these surfaces meridian surfaces of elliptic or…

Differential Geometry · Mathematics 2016-07-15 Georgi Ganchev , Velichka Milousheva

In the present paper we consider a special class of spacelike surfaces in the Minkowski 4-space which are one-parameter systems of meridians of the rotational hypersurface with timelike or spacelike axis. They are called meridian surfaces…

Differential Geometry · Mathematics 2016-07-15 Kadri Arslan , Velichka Milousheva

We consider a special class of timelike surfaces in the four-dimensional Minkowski space which are one-parameter systems of meridians of rotational hypersurfaces with spacelike axis and call them meridian surfaces of hyperbolic type. We…

Differential Geometry · Mathematics 2026-05-29 Victoria Bencheva , Velichka Milousheva

A marginally trapped surface in the four-dimensional Minkowski space is a spacelike surface whose mean curvature vector is lightlike at each point. We introduce meridian surfaces of parabolic type as one-parameter systems of meridians of a…

Differential Geometry · Mathematics 2013-12-06 Georgi Ganchev , Velichka Milousheva

We consider a special family of 2-dimensional timelike surfaces in the Minkowski 4-space $\mathbb{R}^4_1$ which lie on rotational hypersurfaces with timelike axis and call them meridian surfaces of elliptic type. We study the following…

Differential Geometry · Mathematics 2025-04-02 Victoria Bencheva , Velichka Milousheva

Meridian surfaces in the Euclidean 4-space are two-dimensional surfaces which are one-parameter systems of meridians of a standard rotational hypersurface. On the base of our invariant theory of surfaces we study meridian surfaces with…

Differential Geometry · Mathematics 2016-01-26 Georgi Ganchev , Velichka Milousheva

In the present article we study a special class of surfaces in the four-dimensional Euclidean space, which are one-parameter systems of meridians of the standard rotational hypersurface. They are called meridian surfaces. We classified…

Differential Geometry · Mathematics 2015-05-18 Betül Bulca , Kadri Arslan

We construct a special class of Lorentz surfaces in the pseudo-Euclidean 4-space with neutral metric which are one-parameter systems of meridians of rotational hypersurfaces with lightlike axis and call them meridian surfaces. We give the…

Differential Geometry · Mathematics 2018-10-02 Velichka Milousheva

In the present article we study a special class of surfaces in the four-dimensional Euclidean space, which are one-parameter systems of meridians of the standard rotational hypersurface. They are called meridian surfaces. We show that a…

Differential Geometry · Mathematics 2014-10-30 Kadri Arslan , Betul Bulca , Velichka Milousheva

We study the class of spacelike surfaces in the four-dimensional Minkowski space whose mean curvature vector at any point is a non-zero spacelike vector or timelike vector. These surfaces are determined up to a motion by eight invariant…

Differential Geometry · Mathematics 2011-01-21 Georgi Ganchev , Velichka Milousheva

We construct a special class of Lorentz surfaces in the pseudo-Euclidean 4-space with neutral metric which are one-parameter systems of meridians of rotational hypersurfaces with timelike or spacelike axis and call them meridian surfaces.…

Differential Geometry · Mathematics 2017-04-27 Betul Bulca , Velichka Milousheva

In the present paper we consider a special class of Lorentz surfaces in the four-dimensional pseudo-Euclidean space with neutral metric which are one-parameter systems of meridians of rotational hypersurfaces with timelike or spacelike axis…

Differential Geometry · Mathematics 2017-04-27 Betul Bulca , Velichka Milousheva

We define general rotational surfaces of elliptic and hyperbolic type in the pseudo-Euclidean 4-space with neutral metric which are analogous to the general rotational surfaces of C. Moore in the Euclidean 4-space. We study Lorentz general…

Differential Geometry · Mathematics 2018-10-02 Yana Aleksieva , Velichka Milousheva , Nurettin Cenk Turgay

We give the classification of constant mean curvature rotational surfaces of elliptic, hyperbolic, and parabolic type in the four-dimensional pseudo-Euclidean space with neutral metric.

Differential Geometry · Mathematics 2016-03-03 Yana Aleksieva , Velichka Milousheva

We study parabolic linear Weingarten surfaces in hyperbolic space $\rlopezh^3$. In particular, we classify two family of parabolic surfaces: surfaces with constant Gaussian curvature and surfaces that satisfy the relation…

Differential Geometry · Mathematics 2007-05-23 Rafael López

In this work we firstly classify space-like surfaces in Minkowski space $\mathbb E^4_1$, de-Sitter space $\mathbb S^3_1$ and hyperbolic space $\mathbb H^3$ with harmonic Gauss map. Then we give a characterization and classification of…

Differential Geometry · Mathematics 2013-05-24 Uğur Dursun , Nurettin Cenk Turgay

We study surfaces with parallel normalized mean curvature vector field in Euclidean or Minkowski 4-space. On any such surface we introduce special isothermal parameters (canonical parameters) and describe these surfaces in terms of three…

Differential Geometry · Mathematics 2018-10-03 Georgi Ganchev , Velichka Milousheva

In this paper, we study meridian surfaces of Weingarten type in Euclidean 4-space E^4. We give the neccessary and sufficient conditions for a meridian surface in E^4 to become Weingarten type.

Differential Geometry · Mathematics 2013-05-15 Gunay Ozturk , Betul Bulca , Bengu Kilic Bayram , Kadri Arslan

General rotational surfaces as a source of examples of surfaces in the four-dimensional Euclidean space have been introduced by C. Moore. In this paper we consider the analogue of these surfaces in the Minkowski 4-space. On the base of our…

Differential Geometry · Mathematics 2014-10-27 Georgi Ganchev , Velichka Milousheva

A surface in hyperbolic space $\h^3$ invariant by a group of parabolic isometries is called a parabolic surface. In this paper we investigate parabolic surfaces of $\h^3$ that satisfy a linear Weingarten relation of the form…

Differential Geometry · Mathematics 2008-09-24 Rafael López
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