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Home » CR Geometry: Complex Analysis Meets Real Geometry and Number Theory

Summer Graduate School

CR Geometry: Complex Analysis Meets Real Geometry and Number Theory July 25, 2005 - August 05, 2005
Organizers John D’Angelo
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Description CR Geometry is a developing branch of mathematics which arose from the theory of functions of several complex variables and which touches nearly all fields of mathematics. The name itself has two etymologies: CR stands for Cauchy-Riemann and suggests the Cauchy-Riemann equations; CR also stands for complex-real and suggests real submanifolds of complex spaces. The ideas developed together since the 1960's when mathematicians used the methods of partial differential equations (especially the Cauchy-Riemann equations in several variables) to relate the geometry of the boundary of a domain in complex Euclidean space to the function theory on the domain. These considerations led to a deep understanding of pseudoconvexity, a complex variables analogue of convexity, and to the study of the tangential Cauchy-Riemann equations. This summer's workshop will have three parts. We will offer a short course on CR geometry that should serve as useful background for research in many areas. We will present some accessible research problems based on CR mappings and we will work together on them. Some of these problems involve elementary number theory. For example, CR geometry leads naturally to a family of polynomials with integer coefficients in two variables with the remarkable property that f(x,y) is congruent to x^p + y^p modulo (p) if and only if p is prime. The simplest example is the familiar polynomial(x+y)^p. We will work on open questions concerning them. Another open problem we will consider has a completely different flavor; it involves iterated Lie brackets and could lead to a new characterization of pseudoconvexity. We will conclude with a small conference where research mathematicians give lectures and meet the graduate students. The main lectures will be given by John D’Angelo; the following have agreed to participate in the program: Peter Ebenfelt (UCSD), Dror Varolin (UIUC), Jeff McNeal (Ohio State), Bernhard Lamel (Univ. of Vienna), Xiaojun Huang (Rutgers). Students interested in this program might consult the references below to get a feeling for CR geometry. On the other hand, what happens in the workshop depends mostly on the imagination of the students. This is an MSRI Summer Graduate Program; priority is given to students nominated by MSRI's Academic Sponsor universities. Funding is available only for nominee students. References M. Salah Baouendi, Peter Ebenfelt, and Linda Preiss Rothschild, Real submanifolds in complex space and their mappings, Princeton Mathematical Series 47, Princeton University Press, Princeton, NJ, 1999. Tom Bloom, David Catlin, John P. D'Angelo and Yum-Tong Siu, editors, Modern Methods in Complex Analysis, Annals of Math Studies 137, Princeton Univ. Press, Princeton, 1995. John P. D'Angelo, Several Complex Variables and the Geometry of Real Hypersurfaces, CRC Press, Boca Raton, Fla., 1992. John P. D'Angelo, Inequalities from Complex Analysis, Carus Mathematical Monograph No. 28, Mathematics Association of America, 2002. John P. D'Angelo, Number-theoretic Properties of Certain CR Mappings, Journal of Geometric Analysis, Volume 14, Number 2 (2004), 215-229.

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A block of rooms has been reserved at the Rose Garden Inn. Reservations may be made by calling 1-800-992-9005 OR directly on their website. Click on Corporate at the bottom of the screen and when prompted enter code MATH (this code is not case sensitive). By using this code a new calendar will appear and will show MSRI rate on all room types available.

A block of rooms has been reserved at the Hotel Durant. Reservations may be made by calling 1-800-238-7268. When making reservations, guests must request the MSRI preferred rate. If you are making your reservations on line, please go to this link and enter the promo/corporate code MSRI123. Our preferred rate is $129 per night for a Deluxe Queen/King, based on availability.

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Schedule
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Jul 25, 2005
Monday
09:00 AM - 10:00 AM
  Proper Holomorphic Mappings and CR Geometry.
John D'Angelo
10:30 AM - 11:30 AM
  Some Open Problems Concerning Proper Holomorphic Mappings.
John D'Angelo
Jul 26, 2005
Tuesday
09:00 AM - 10:00 AM
  Group Invariant Proper Maps.
John D'Angelo
10:30 AM - 11:30 AM
  Local CR Embeddings Into Spheres.
Peter Ebenfelt
Jul 27, 2005
Wednesday
09:00 AM - 10:00 AM
  Levi Non-degenerate Hypersurfaces.
Peter Ebenfelt
10:30 AM - 11:30 AM
  Proper Maps When the Image Dimension is Large. (A.K.A.: Directions to Alice's Restaurant)
Dror Varolin
Jul 28, 2005
Thursday
09:00 AM - 10:00 AM
  Hermitian Algebraic Functions and Catlin-D'Angelo Theorem.
Dror Varolin
10:30 AM - 11:30 AM
  The Bergman Kernal and Scaling Methods in n -Dimensional Complex Space.
Jeff McNeal
Jul 29, 2005
Friday
09:00 AM - 10:00 AM
  Discussion
John D'Angelo
10:30 AM - 11:30 AM
  Discussion on Primality Properties of Group Invariant Maps.
John D'Angelo
Aug 01, 2005
Monday
09:00 AM - 10:00 AM
  Rigidity Problems in CR Analysis: Survey.
Xiaojun Huang
10:30 AM - 11:30 AM
  Rigidity Problems in CR Analysis: Survey II.
Xiaojun Huang
Aug 02, 2005
Tuesday
09:00 AM - 10:00 AM
  Complexification, Segrevarieties, and the X-Variety.
Bernhard Lamel
10:30 AM - 11:30 AM
  Volumes of Holomorphic Images of Balls.
John D'Angelo
Aug 05, 2005
Friday
09:00 AM - 10:00 AM
  CR Geometry -1st Lecture.
John D'Angelo
10:30 AM - 11:30 AM
  CR Geometry -2nd Lecture.
John D'Angelo