- (Topics in) Algebraic Geometry.
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On the other hand, polynomials show remarkable rigidity properties in other situations and can be defined over any ring, and this leads to important arithmetic ramifications of algebraic geometry. Methodically, two contrasting cross-fertilizing aspects have pervaded the subject: one providing formidable abstract machinery and striving for maximum generality, the other experimental and computational, focusing on illuminating examples and forming the concrete geometric backbone of the first aspect, often uncovering fascinating phenomena overlooked from the bird's eye view of the abstract approach.

In the lectures, we will introduce the category of quasi-projective varieties, morphisms and rational maps between them, and then proceed to a study of some of the most basic geometric attributes of varieties: dimension, tangent spaces, regular and singular points, degree.

Moreover, we will present many concrete examples, e. Archived Pages: We will build up a dictionary between geometric properties of varieties and numericalinvariants of equations. There are 3 lecture per week and every other week one session is designed as a problem session. The course is based on the lectures and exercises. The basic lecture notes will be posted and solutions to most of the exercises will be distributed.

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## algebraic geometry

The last 2 weeks of the course will be devoted to review and revision, and in this time exercises both assigned and not assigned will be addressed. Besides the problems classes, there is also a weekly office hour during which students can ask questions about lectures and exercises.

For information resit arrangements, please see the re-sit page on the intranet. Please use these links for further information on relative weighting and marking criteria. Often invariant theory, i.

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In the attempt to answer these kinds of questions, algebraic geometry has moved from its classical beginnings to become a deep subject, drawing on a vast array of ideas in mathematics including commutative and homological algebra and category theory. Many properties of the zero sets of polynomials become most transparent when one considers solutions over the complex numbers.

## soft question - Why study Algebraic Geometry? - Mathematics Stack Exchange

In this case, methods of topology, differential geometry, and partial differential equations can be applied. Recent developments in high energy physics have also led to a host of spectacular results and open problems in complex algebraic geometry.

For example, the case where the dimension is one, i. This study has a long history involving calculus, complex analysis, and low dimensional topology.

The moduli space of all compact Riemann surfaces has a very rich geometry and enumerative structure, which is an object of much current research, and has surprising connections with fields as diverse as geometric topology in dimensions two and three, nonlinear partial differential equations, and conformal field theory and string theory.

Many questions posed by physicists have been solved by using the wealth of techniques developed by algebraic geometers. In turn, physics questions have led to new conjectures and new methods in this very central area of mathematics.

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For another example, the case of complex dimension two, i. Finally, the proposed ten dimensional space-time of string theory involves six very small extra dimensions, which correspond to certain three dimensional algebraic varieties, Calabi-Yau manifolds.