Titlebook: ;

皮薩

Springer Tracts in Advanced Roboticshttp://image.papertrans.cn/s/image/869254.jpg

Paraplegia

Introduction,le when other classes of hypersurfaces are considered. In the case of gravity the situation is worse: even for . = const asymptotically Minkowskian slices the boundary terms are crucial. (This is one of the main differences between the Arnowitt-Deser-Misner (ADM) mass for gravity (. Sect. 5.4 below)