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曲线上的定常角曲面
引用本文:王小六,潮小李.曲线上的定常角曲面[J].东南大学学报,2013(4):470-472.
作者姓名:王小六  潮小李
作者单位:东南大学数学系,南京211189
基金项目:The National Natural Science Foundation of China (No. 10971029, 11101078, 11171064), the Natural Science Foundation of Jiangsu Province ( No. BK2011583 ).
摘    要:利用Frenet.Serret公式来讨论R^3中定常角的直纹面,给出了它们的特征分类.如果定常角曲面是具有r(s,1,)=σ(s)+1,(cosa(s)·t(s)+sina(s)·n(S))形式的切线面和法向曲面,则它们局部等距于平面或一类特殊的曲面.如果定常角曲面是具有,(s,v)=σ(S)+v(cosα(s)·n(s)+sinα·b(s))形式的法向曲面和副法向曲面,则它们局部等距于平面或柱面.

关 键 词:直纹面  定常角曲面  切线面  法向曲面  副法向曲面

Constant angle surfaces constructed on curves
Wang Xiaoliu Chao Xiaoli.Constant angle surfaces constructed on curves[J].Journal of Southeast University(English Edition),2013(4):470-472.
Authors:Wang Xiaoliu Chao Xiaoli
Institution:Wang Xiaoliu Chao Xiaoli (Department of Mathematics, Southeast University, Nanjing 211189, China)
Abstract:The Frenet-Serret formula is used to characterize the constant angle ruled surfaces in R3. When the surfaces are the tangent developmental and normal surfaces, that is, r(s, v) = tr(s) +v(cosα(s) . t(s) +sina(s) . n(s)), it is shown that each of these surfaces is locally isometric to a piece of a plane or a certain special surface. When the surfaces are normal and binormal surfaces, that is, r ( s, v ) = σ ( s ) + v ( cosa ( s ) . n(s) + since(s) . b(s)), it is shown that each of these surfaces is locally isometric to a piece of a plane or a cylindrical surface.
Keywords:ruled surface  constant angle surface  tangent surface  normal surface  binormal surface
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