Results 21 to 30 of about 34,040 (161)

Influence of the geometrical researches of surfaces of revolution and translation surfaces on design of unique structures

Structural Mechanics of Engineering Constructions and Buildings, 2019
Aims of research. The use, design and analysis of architectural and building structures in the form of smooth and composite surfaces have become relevant and in demand lately, which determined the purpose of this article - to analyze the use of ...
Gérard Léopold Gbaguidi Aisse
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Bianchi transformation of the Minding coil

Дифференциальная геометрия многообразий фигур
The work is devoted to the study of the Bianchi transform for surfac­es of constant negative Gaussian curvature. The surfaces of rotation of constant negative Gaussian curvature are the Mining top, the Minding coil, the pseudosphere (Beltrami surface ...
M. A. Cheshkova
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Stability and instability of solutions of semilinear problems with Dirichlet boundary condition on surfaces of revolution

Electronic Journal of Qualitative Theory of Differential Equations, 2016
We consider the equation $\Delta u+f(u)=0$ on a surface of revolution with Dirichlet boundary conditions. We obtain conditions on $f$, the geometry of the surface and the maximum value of a positive solution in order to ensure its stability or ...
Maicon Sônego
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A note on existence of patterns on surfaces of revolution with nonlinear flux on the boundary

Electronic Journal of Qualitative Theory of Differential Equations, 2019
In this note we address the question of existence of non-constant stable stationary solution to the heat equation on surfaces of revolution subject to nonlinear boundary flux involving a positive parameter.
Maicon Sônego
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A New Approach to Timelike Hypersurfaces of Constant Ratio in IE14

Journal of Mathematics, 2023
In this study, we consider timelike revolution hypersurfaces of constant ratio in Minkowski space-time. At first, we exhibit the representations of revolution hypersurfaces given by three different forms.
Sezgin Büyükkütük
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NC Roughing Maching of Cavities Defined by Surface of Revolution Approach [PDF]

Engineering and Technology Journal, 2007
In the NC roughing phase of cavities, process planar needs to find the machining layers as well as the feasible cutters for these layers. This Paper deals with the issues of Cavity Construction based on Surface of revolution technique using cubic Bezier ...
Wissam Hamdan
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The Linear Elliptic - Surfaces of Revolution

Communications, 2007
The paper presents a category of revolution surfaces which may be generated by the metrical Euclidean transformation compounded by revolutions and displacements.
Tatiana Olejnikova
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On the existence of patterns in reaction-diffusion problems with Dirichlet boundary conditions

Electronic Journal of Qualitative Theory of Differential Equations
Consider a general reaction-diffusion problem, $u_t = \Delta u + f(x, u, u_x)$, on a revolution surface or in an $n$-dimensional ball with Dirichlet boundary conditions.
Maicon Sônego
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Evidence That Field Muskmelon (Cucumis melo L. var. agrestis Naud.) Fruits Are Solids of Revolution

Plants, 2023
In nature, the fruit shapes of many plants resemble avian eggs, a form extensively studied as solids of revolution. Despite this, the hypothesis that egg-shaped fruits are themselves solids of revolution remains unvalidated.
Ke He, Cang Hui, Weihao Yao, Jinfeng Wang, Lin Wang, Qiying Li, Peijian Shi   +6 more
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A New Approach to Rotational Weingarten Surfaces

Mathematics, 2022
Weingarten surfaces are those whose principal curvatures satisfy a functional relation, whose set of solutions is called the curvature diagram or the W-diagram of the surface.
Paula Carretero, Ildefonso Castro
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