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2018-08-18  18:41 hrs.

Intersection theory: watching the movie instead of counting the characters

Bernard Teissier
Institut Mathématique de Jussieu, France


Quite often in intersection theory, in order to define the intersection number of two subvarieties at a point p, one puts the two subvarieties "in general position" by a one parameter deformation, and then counts the number of the -now transversal- intersection points which coalesce to the original point p as the parameter vanishes. I will present situations where it is useful to distinguish the different "speeds" at which the intersection points tend to p as the deformation parameter tends to 0.



Palapa Guillermo Torres -- Miércoles 3 de diciembre de 2014, 13:00 horas


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