The authors show that the hyperboloid of one sheet and the hyperbolic paraboloid are ruled surfaces.作者证实:单叶双曲面和双曲抛物面是直线曲面.Two fdmilies Of characteristic lines in the hyperbolic region are not orthogonal.在双曲型区域两族特征线互不正交.F...
In this article holomorphic curves in the complex hyperbolic space are discussed.研究复双曲空间中的全纯曲线.The hyperbolic conservation laws with relaxation appear in many physical systems floodwith friction, magnetohydrodynamics, et...