ブラウザの設定でJava Scriptの使用を有効にしてご利用ください。
出典:Wikipedia
出典:『Wikipedia』 (2011/05/24 14:43 UTC 版)
In differential geometry and general relativity, the Bach tensor is a tensor of rank 2 which is conformally invariant in dimension n=4. It is the only known conformally invariant tensor that is algebraically independent of the Weyl tensor. In abstract indices the Bach tensor is given by
Bach tensor