R2中广义次仿射弹性曲线的一个注记

§1 .　IntroductionTheclassicalelastictheorydealswithacurveinR2 orR3 whichisacriticalpointforthetotalsquaredcurvaturefunctionalonregularcurveswithfixedlengthsatisfyinggivenboundaryconditions.ThiscouldtracebacktoDanielBernoulli( [1]) .Duringrecenttwodecades,severalauthors( [2 ],[3],[4 ])consideredthegeneralizationsoftheelasticatothespaceforms.ThispaperdealswiththeaffinestarlikecurvesinR2 .Westudythecriticalpointforthetotalpolynomialsubaffinecurvaturefunctionalonthosestarlikecurvessatisfyingg…     

Generalized elastic curves in the Lorentz flat space <Emphasis Type="Italic">L</Emphasis><Superscript>4</Superscript>

In this paper, we study the extremals of the curvature energy actions on non-null curves in the four-dimensional Lorentz-Minkowski space. We derive the motion equations and find three Killing fields along the generalized elastic curves. We also construct a cylindrical coordinate system using these Killing fields and express the generalized elastic curves by means of quadratures.     

R^3中广义次仿射弹性曲线

本文用Killing场和sl(3,R)的共轭类分类给出了R^3中的广义次仿射弹性曲线，即全多项式次仿射曲率泛函的临界点的完全解。     

三维洛仑兹空间形式中的类光曲线

讨论三维洛仑兹空间形式中的类光曲线粒子模型,研究依赖于粒子轨道的Cartan曲率的作用,找出了沿着极值曲线的Killing场,通过Killing场构造合适的坐标系,用积分求出极值曲线的参数表达式.     

平面上的星形仿射弹性曲线

次仿射弹性曲线是全平方次仿射曲率泛函的临界点.该文对平面上的星形仿射曲线进行了研究，用椭圆函数的方法解出了次仿射弹性曲线的次仿射曲率，并运用Killing 场和sl(2, R)的共轭类分类用积分给出了次仿射弹性曲线的完全解.     

R3中的广义次仿射弹性曲线

本文用Killing场和sl(3,R)的共轭类分类给出了R3中的广义次仿射弹性曲线,即全多项式次仿射曲率泛函的临界点,的完全解     

洛伦兹平坦空间L4中的一般弹性曲线

研究了4维Lorentz-Minkowski空间中,非类光曲线的曲率能量作用的极值曲线,求出了一般弹性曲线的运动方程和3个沿着一般弹性曲线的Killing场,用这些Killing场建立了一个柱面坐标系并用积分表示了一般弹性曲线.     

Anti-de Sitte:空间H_1~3中的广义弹性曲线(英文)

In this paper,the extremals of curvature energy actions on non-null Frenet curves in 3-dimensional Anti-de Sitter space are studied.We completely solve the Euler-Lagrange equation by quadratures.By using the Killing fields,we obtain existence for closed general-ized elastica fully immersed in Anti-de Sitter space H_1~3.