Kirk Public Lecture: Counting curves: which, how and why

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• Barbara Fantechi (SISSA)
• Monday 15 April 2024, 16:00-17:00
• Seminar Room 1, Newton Institute.

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EMG - New equivariant methods in algebraic and differential geometry

Enumerative geometry is a very classical branch of (complex projective) algebraic geometry, that counts solutions to geometric problems: e.g., for a cubic polynomial f(x,y,z), there are 27 lines L in space with f(p)=0 at every point in L (Cayley-Salmon, 1849). Around 1990, the influx of ideas from string theory (in particular Gromov-Witten invariants) opened up new research directions, which have kept developing to the present day, with continued interactions with symplectic geometry, integrable systems, and particle physics. We will sketch a part of this story, highlighting how “abstract” notions like schemes arise naturally in very concrete problems.

This talk is part of the Isaac Newton Institute Seminar Series series.

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