Results 31 to 40 of about 91 (81)

Some aspects of normal curve on smooth surface under isometry

open access: yesDemonstratio Mathematica
The normal curve is a space curve that plays an important role in the field of differential geometry. This research focuses on analyzing the properties of normal curves on smooth immersed surfaces, considering their invariance under isometric ...
Singh Kuljeet   +2 more
doaj   +1 more source

Hyperbolic framed surfaces in hyperbolic 3-space

open access: yesDemonstratio Mathematica
We define a hyperbolic framed surface with a moving frame in hyperbolic 3-space. By the existence and uniqueness theorems for hyperbolic framed surfaces, we know that the hyperbolic framed surface is uniquely determined by basic invariants up to a ...
Zhou Anjie, Pei Donghe
doaj   +1 more source

Activity in 21G11 and 23C09 neurons is required for behavioral response to CO2.

open access: yes, 2019
(A) T-maze response to 1% CO2 of 21G11-GAL4 and 23C09-GAL4 flies driving UAS-Kir2.1, TubGAL80TS expression. (A and C) Black dots, no heat induction of Kir2.1 expression (see Materials and Methods).
Miguel Gaspar (51400)   +3 more
core   +1 more source

Radial-axial runner blade as a differentiable manifold with conformal mapping

open access: yesOpen Engineering
This article is closely tied to the author’s Radial-axial runner blade design using the coordinate slice technique. It picks up the thread of the content and follows as stated in the Future development section with conformal mapping of camber curves. The
Koudelka Libor
doaj   +1 more source

A Helmholtz–Lie Type Characterization of Ellipsoids II

open access: yes, 2008
. A closed convex surface S in IE d is an ellipsoid if and only if for any x, y ∈ S there is an affinity mapping x onto y and a neighbourhood of x in S onto a neighbourhood of y in S. Keywords.
Monika Ludwig, Peter M. Gruber
core  

A New Approach to the Invariants of the Ruled Surfaces with a Ruling Area Vector

open access: yes, 2010
In this paper, the area vector of a closed space curve and the Steineer vector of a motion are extensively studied by the methods of differential geometry. A new ruled surface whose ruling is the area vector of a closed space curve formed during a closed
R Güneş, H B Karadag, M Karadag
core  

Journal for Geometry and Graphics Volume 6 (2002), No. 1, 83–98. Filling Holes with B-spline Surfaces

open access: yes, 2008
. This paper presents an algorithm for filling holes with polynomial tensor product B-spline surfaces of degree (3,2). The B-spline surface is constructed as a tube shaped surface which is attached to the boundary of the hole at one end and is tied up in
Márta Szilvási-nagy
core  

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