我們閱讀Hammond的論文：「Variational problems for Fefferman hypersurface measure and volume-preserving CR invariants」並學習如何於保體積的變換群下，在二維複空間裡的嚴格擬凸實超曲面上構造部分標準式，並且找出相應的不變量。;We study Hammond′s paper: ``Variational problems for Fefferman hypersurface measure and volume-preserving CR invariants” and learn how to construct a partially Moser′s normal form for strongly pseudoconvex real hypersurfaces in 2-dimensional complex space with respect to the group of volume-preserving transformations of 2-dimensional complex and drive its invariants.
