同来核对
发表于 2025-4-1 02:09:50
On Several Classes of Ricci Tensor,ndition is an overdetermined PDE where the unknowns are the components of the metric. Using the methods of the theory of overdetermined PDE we can produce a lot of explicit examples, which seem to be new, of such manifolds. We will also make some observations about relationships of various conditions to each other.
敌手
发表于 2025-4-1 06:11:31
http://reply.papertrans.cn/32/3198/319795/319795_62.png
不成比例
发表于 2025-4-1 12:06:40
http://reply.papertrans.cn/32/3198/319795/319795_63.png