【摘 要】
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Characteristic cycle of a constructible complex is constructed by T.Saito using the singular support defined by A.Beilinson.It computes the Euler characteri
【机 构】
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UniversityofTokyo
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Characteristic cycle of a constructible complex is constructed by T.Saito using the singular support defined by A.Beilinson.It computes the Euler characteristic by the index formula and characterized by using vanishing cycles.In this talk,we will study a sufficient condition for two complexs to have the same characteristic cycle and compute the characteristic cycle of a rank 1 sheaf in some special cases using ramification theory.
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