space of constant curvature space 中文意思是什麼
space of constant curvature space
解釋
常曲率空間-
For geodesic triangle in 2 - dimensional constant curvature space, the author improves some geometric inequalities on its interior angle by theory of majorization
摘要對於二維常高斯曲率空間上的測地三角形,研究了其內角的優超關系,並運用優超理論得到了若干新的關于其三內角的幾何不等式。 -
How the universe evolves is affected by three factors, namely the mean density of mass - energy, the space - time curvature and a mysterious factor, the cosmological constant
宇宙尺度的變化受三個因素影響:宇宙中質量-能量的平均密度宇宙的時空曲率與及一個神秘因素宇宙常數。 -
The future of the universe is mainly determined by the mean density of mass - energy and the space - time curvature, while cosmological constant does not carry any weight among popular cosmological theories
現在流行的宇宙論都不考慮宇宙常數,宇宙的未來完全由質量能量的平均密度及宇宙的時空曲率來決定。 -
This paper contains three chapters. we discuss the pinching problems on the length of the second fundamental form of compact space - like submanifolds mn with unit parallel mean curvature vector in the de sitter space spn + p. in particular, a sufficient condition for mn with constant scalar curvature to be totally umbilical is given
討論desitter空間s _ p ~ ( n + p )中具有平行的單位平均曲率向量的緊致類空子流形m ~ n的第二基本形式長度拼擠問題,給出了具有常數量曲率的這種子流形是全臍球面的一個充分條件。 -
In chapter one, we investigate the influence of the boundary on the shape of the space - like hypersurface with constant mean curvature or constant scalar curvature in the lorentz - minkowski space ln + 1
第一章對于lorentz - minkowski空間中的常平均曲率或常純量曲率的類空超曲面,探討了邊界對超曲面形狀的影響。 -
In the second part, we investigate the compact submanifolds m with the parallel isoperimetric section in the real space forms rm ( c ) and prove that if there exists a parallel isoperimetric section on m, and the sectional curvature of m is always greater than zero, then m is contained in a hyper - sphere ; and get that the gauss curvature of the compact surfaces m with constant mean curvature in constant curvature space r4 ( c ) is always greater than zero, then m is a totally geodesic surface or a sphere, where an isoperimetric on m means a unit normal vector field defined globally on m with m1 ( ) = constant
( 2 )研究了實空間形式r ~ m ( c )中具有平行等參截面的緊致子流形m ,證明了具有一平行等參截面的子流形m ,如果m的截面曲率恆正,則m包含在r ~ m ( c )的一個超球面內;對于常曲率空間及r ~ 4 ( c )中具有常平均曲率的緊致曲面m ,如果m的高斯曲率處處大於零,則m或為r ~ m ( c )中的全測地曲面或為一球面。這里m上的等參截面是m上整體定義的單位法向量場,使得m關於它的平均曲率m _ 1 ( )是常數。
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