A Short Proof of the Minimality of Simons Cone
A Short Proof of the Minimality of Simons Cone
复制标题
西蒙斯锥极小性的简短证明
DOI:
10.4171/rsmup/121-14
复制
发表时间:
2009
期刊:
影响因子:
--
通讯作者:
E. Paolini
中科院分区:
文献类型:
--
作者:
G. Philippis;E. Paolini
In 1969 Bombieri, De Giorgi and Giusti proved that Simons cone is a minimal surface, thus providing the first example of a minimal surface with a singularity. We suggest a simplified proof of the same result. Our proof is based on the use of sub-calibrations, which are unit vector fields extending the normal vector to the surface, and having non-positive divergence. With respect to calibrations (which are divergence free) sub-calibrations are more easy to find and anyway are enough to prove the minimality of the surface.