Title of article :
Umbilicity of surfaces with orthogonal asymptotic lines in
Author/Authors :
Maria del Carmen Romero-Fuster، نويسنده , , Federico Sanchez-Bringas، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2002
Keywords :
Umbilicity , Sphericity , Asymptotic direction , ?-principal curvature foliation
Journal title :
DIFFERENTIAL GEOMETRY & APPLICATIONS
Journal title :
DIFFERENTIAL GEOMETRY & APPLICATIONS