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Monday, April 6, 2015 - 11:30 to 12:30
LH 101
Dr. Ritwik Mukherjee
Dept of Mathematics, TIFR Mumbai
Counting curves via Topology

Abstract: Enumerative geometry is a branch of mathematics concerned with the following question: "How many geometric objects are there that satisfy certain constraints?" The simplest example of such a question is: "How many lines pass through two distinct points?'' A more interesting example is: "How many lines are there in three dimensional space that intersect four generic lines?'' In this talk we will describe a topological method to approach enumerative questions. We will use this method to count how many degree d curves are there in CP^2  that pass through certain number of generic points and have certain singularities.

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