刊物主题:Mathematics Mathematics Algebraic Geometry Topological Groups and Lie Groups Geometry Number Theory Calculus of Variations and Optimal Control
出版者:Springer Berlin / Heidelberg
ISSN:1432-1785
文摘
We describe some general constructions on a real smooth projective 4-quadric which provide analogues of the Willmore functional and conformal Gauss map in Lie sphere and projective differential geometry. Extrema of these functionals are characterized by harmonicity of this Gauss map.