Results 11 to 20 of about 167,459 (301)
Ruled algebraic surfaces with a main frame from three superellipses
Structural Mechanics of Engineering Constructions and Buildings, 2022 An opportunity of conversion of algebraic surfaces with a main frame from three superellipses of general type into ruled surfaces of several views is shown. It is necessary to take one, two, or all of three superellipses in the form of a rhombus, i.e. it
Iraida A. Mamieva
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Curves on ruled surfaces under infinitesimal bending [PDF]
Bulletin of Natural Sciences Research, 2021 Infinitesimal bending of curves lying with a given precision on ruled surfaces in 3-dimensional Euclidean space is studied. In particular, the bending of curves on the cylinder, the hyperbolic paraboloid and the helicoid are considered and appropriate ...
Najdanović Marija +2 more
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STUDY ON THE PROJECTION WITH ELEVATIONS OF HELICOID-TYPE SURFACES
Journal of Industrial Design and Engineering Graphics, 2021 This paper presents right helicoid surfaces in various systems of representation. Emphasis was put on the representation of helicoid surfaces in the projection with elevations, where both the right helicoid with a perpendicular axis on the elevated plan ...
Adrian TUDOREANUCRISAN, Delia DRAGAN
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Analytical ruled surfaces and their complete classification
Structural Mechanics of Engineering Constructions and Buildings, 2020 The aim of the work - to give the possibility to expand mind of designers and architects projecting structures in the form of traditional and non-canonical ruled surfaces.
Sergey N. Krivoshapko
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Special non-lightlike ruled surfaces in Minkowski 3-space
AIMS Mathematics, 2023 In this paper, we give the existence and uniqueness theorems for non-lightlike framed surfaces and define a special non-lightlike ruled surface in Minkowski 3-space. It may have singularities.
Chang Sun, Kaixin Yao , Donghe Pei
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On simultaneous characterizations of partner-ruled surfaces in Minkowski 3-space
AIMS Mathematics, 2023 In this study, the partner-ruled surfaces in Minkowski 3-space, which are defined according to the Frenet vectors of non-null space curves, are introduced with extra conditions that guarantee the existence of definite surface normals.
Yanlin Li , Kemal Eren, Soley Ersoy
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Real structures on minimal ruled surfaces [PDF]
, 2002 In this paper, we give a complete description of the deformation classes of real structures on minimal ruled surfaces. In particular, we show that these classes are determined by the topology of the real structure, which means that real minimal ruled ...
Welschinger, Jean-Yves
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Canonical geometrically ruled surfaces [PDF]
Mathematische Nachrichten, 2005 AbstractWe prove the existence of canonical scrolls; that is, scrolls playing the role of canonical curves. First of all, they provide the geometrical version of Riemann Roch Theorem: any special scroll is the projection of a canonical scroll and they allow to understand the classification of special scrolls in PN.
Fuentes García, Luis, Pedreira, Manuel
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Ulrich bundles on ruled surfaces
, 2018 In this short note, we study the existence problem for Ulrich bundles on ruled surfaces, focusing our attention on the smallest possible rank. We show that existence of Ulrich line bundles occurs if and only if the coefficient $\alpha$ of the minimal ...
Aprodu, M., Costa, L., Miró-Roig, R.
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Smarandache Ruled Surfaces according to Frenet-Serret Frame of a Regular Curve in E3
Abstract and Applied Analysis, 2021 In this paper, we introduce original definitions of Smarandache ruled surfaces according to Frenet-Serret frame of a curve in E3. It concerns TN-Smarandache ruled surface, TB-Smarandache ruled surface, and NB-Smarandache ruled surface.
Soukaina Ouarab
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