Research on Complex Analytic Geometry and Singularity Theory

首席调查员和调查员在复解析几何和奇点理论方面进行了研究。特别是，在研究的奇异性的复杂的解析叶理，这是在本项目的研究计划中提出的，写了一篇综述文章总结的结果展开理论，确定性问题，结构的奇异集和不变量已获得主要由首席研究员。这是提出了在奇点理论学院举行的里雅斯特，意大利在1991年夏天。此外，对于与奇异集相关的不变量，本文还研究了Baum-Bott剩余和新发现的Lehmann剩余，阐明了这些不变量出现的基本原理，并对它们进行了推广。至于去年提出的D模理论的应用，则是对特征品种和 ...更多信息 复解析奇异叶理的D-模的解复形的局部结构及其与上述不变量的关系。除了上述研究的合作外，每个研究者也进行了自己的研究，并在以下主题上获得了许多结果：广义叶理的完整群胚和辛束缚的Chern-Simons-Maslov类（Suzuki），奇异性理论在微分方程理论中的应用，特别是研究完全可积的一阶微分方程组（Izumiya），曲线的射影几何中出现的奇异性和拉格朗日簇的maslov类（石川），微局部分析及其应用，特别是R-可构造层的莫尔斯不等式（Tose），复平面上的解析群作用，特别是分界线的存在性和刚性定理的证明（Nakai）。少

The head investigators and the investigators did research in Complex Analytic Geometry and Singularity Theory. Especially, on the research of the singularities of complex analytic foliations which was proposed in the research plans for this project, a survey article was written summarizing the results on the unfolding theory, the determinacy problem, the structure of the singular set and the invariants associated to it which have been obtained mainly by the head investigator. This was presented at the College on Singularity Theory held in Trieste, Italy during the summer of 1991. Also, as to the invariants associated to the singular set, the Baum-Bott residues and the newly found Lehmann residues are studied and the fundamental principle underlying the appearance of these invariants is clarified and some generalizations of them are considered. As to the application of the D-module theory, which was proposed in the previous year, the investigations of the characteristic variety and the … More local structure of the-solution complex of the D-module associated to a complex analytic singular foliation and their relation with the aforementioned invariants are continued.Besides the collaboration of the above research, each of the investigators did research on his own subject as well and obtained many results on the-following subject :Holonomy groupoids for generalized foliations and the Chern-Simons-Maslov classes for symplectic boundles (Suzuki), applications of the singularity theory to the theory of differential equations, especially study of systems of completely integrable first order differential equations (Izumiya), singularity which appear in the projective geometry of curves and the maslov classes of Lagrangian varieties (Ishikawa), the microlocal analysis and its applications, especially the Morse inequality for R-constructible sheaves (Tose), analytic group actions on the complex plane, especially the existence of the separatrix and the proof of the rigidity theorem (Nakai). Less