On the volume of a unit vector field on the three-sphere
Tài liệu tham khảo
Herbert Federer, Geometric Measure Theory, Springer-Verlag (1969).
Herman Gluck andFrank Warner,Great circle fibrations of the three-sphere, Duke Math. J.50 (1983), 107–132.
Herman Gluck, Frank Morgan andWolfgang Ziller,Calibrated geometries and minimal surfaces in Grassmann manifolds, to appear.
Reese Harvey andH. Blaine Lawson, Jr.,Calibrated geometries, Acta Math.148 (1982), 47–157.
S. Walter Wei,Classification of stable currents in the product of spheres, preprint.