The lower bound of the first eigenvalue on compact Riemannmanifold;
给出了一类黎曼浸没在全空间中第一特征值的下界估计。
2
Research of the group of motions in Riemannmanifold is an important question of the differential geometry.
黎曼流形运动群的研究是微分几何中一个重要问题。
3
We used the relationship of the Riemann symmetric space and the symmetric algebra, a matrix inequality to provided a estimate sectional curvature of a complex manifold.