The Number of Exceptional Sequences of Type of D n,E 6,E 7,E 8

Abstract

利用垂直范畴和倾斜理论，给出了dn、E6、E7、E8型完备例外序列的个数的计算公式.Applying the perpendicular categories and tilting theory,the author presents the deduced Fomulae to compute the number of the complete exceptional sequences of type D n,E 6,E 7,E 8.国家自然科学基金;福建省自然科学基