نتایج جستجو برای: parameterized by a curvature
تعداد نتایج: 14898719 فیلتر نتایج به سال:
investigating the feasibility of a proposed model for geometric design of deployable arch structures
deployable scissor type structures are composed of the so-called scissor-like elements (sles), which are connected to each other at an intermediate point through a pivotal connection and allow them to be folded into a compact bundle for storage or transport. several sles are connected to each other in order to form units with regular polygonal plan views. the sides and radii of the polygons are...
section{introduction} the concept of {sl cartan geometry} appeared at the beginning of the twentieth century, when {e}lie cartan was working on the so-called {sl equivalence problem}, the aim of which is to determine whether two given geometric structures can be mapped bijectively onto each other by some diffeomorphism. this problem can be considered in many different contexts, such as ...
seismic retrofit strategies have been developed in the past few decades following the introduction of new seismic provisions and the availability of advanced materials and methods. it can be observed that new approaches to deal with more lateral forces are more innovative and more energy absorbent. in line with this, there is a growing trend toward the use of steel shear walls as a system with ...
for a given riemannian manifold (m,g),it is an interesting question to study the existence of a conformal diffemorphism (also called as a conformal transformation) f : m ! m such that the metric g? = fg has one of the following properties: (i)(m; g?) has constant scalar curvature. (ii)(m; g?) is an einstein manifold.
Discrete conformal structure on polyhedral surfaces is a discrete analogue of the smooth that assigns metrics by scalar functions defined vertices. It unifies and generalizes tangential circle packing, Thurston's inversive distance packing vertex scaling described Luo [29] others. In this paper, we introduce combinatorial α-curvature for structures surfaces, which parameterized generalization c...
This paper addresses the problem of adaptive fuzzy tracking control for aclass of nonlinearly parameterized systems with unknown control directions.In this paper, the nonlinearly parameterized functions are lumped into the unknown continuous functionswhich can be approximated by using the fuzzy logic systems (FLS) in Mamdani type. Then, the Nussbaum-type function is used to de...
Spin 1 2 particles in geodesic trajectories experience no gravitational potential but they still have non-zero couplings to the curvature tensor. The effect of space time curvature on fermions can be parameterized by a vector and a pseudo-vector potential. These apparent CPT violating terms can be measured with satellite based spinpolarized torsion balance and clock comparison experiments. The ...
In this paper, a developable surface with geodesic or line of curvature coordinates is constructed in the Euclidean 3-space. A coordinated by two families parametric curves, base curves (directrices) and lines (rulings). Since any part straight on curvature, we only need to show that directrices are geodesics ensure parameterized coordinates. The necessary sufficient conditions for be studied. ...
This paper investigates the combinatorial $\alpha$-curvature for vertex scaling of piecewise hyperbolic metrics on polyhedral surfaces, which is a parameterized generalization classical curvature. A discrete uniformization theorem established, generalizes Gu-Guo-Luo-Sun-Wuâs curvature [J. Differential Geom. 109 (2018), pp. 431â466]. We further introduce $\alpha$-Yamabe flow and $\alpha$-Cal...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید