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Characteristic cycles of perverse sheaves and Milnor fibers |
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| Authors: | Philibert?Nang,Kiyoshi?Takeuchi author-information" > author-information__contact u-icon-before" > mailto:takechan@math.tsukuba.ac.jp" title=" takechan@math.tsukuba.ac.jp" itemprop=" email" data-track=" click" data-track-action=" Email author" data-track-label=" " >Email author |
| Affiliation: | (1) Institute of Mathematics, University of Tsukuba, 1-1-1, Tennodai, Tsukuba Ibaraki, 305-8571, Japan |
| Abstract: | We show that the Milnor monodromy and the Milnor numbers naturally appear in the characteristic cycles of irreducible perverse sheaves having the singularities of a complex hypersurface. We find also a new numerical constraint on the Milnor monodromy for general hypersurface singularities.Mathematics Subject Classification (1991): 14B05, 32C38, 32S40, 35A27Dedicated to the 60th anniversary of Prof P. Schapira who taught us the theory of D-modules |
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