Past Events
Thursday, February 2, 2012
-
11AM,
Warren Weaver Hall 1302
On Fundamental Solutions for Fractional Diffusion Equations with Divergence Free Drift
11AM, Warren Weaver Hall 1302 Analysis Seminar
Hideyuki Miura
Tuesday, January 31, 2012
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4PM,
Warren Weaver Hall 201
Faster Deterministic Integer Factorisation
4PM, Warren Weaver Hall 201 Algebraic Geometry Seminar
Edgar Costa , Courant Institute of Mathematical Sciences
Thursday, January 26, 2012
-
11AM,
Warren Weaver Hall 1302
Approximation by Diffusion and Homogenization for Fermi-Dirac-Poisson Statistics
11AM, Warren Weaver Hall 1302 Analysis Seminar
Lazhar Tayeb, University of Tunis
Wednesday, January 25, 2012
-
3:30PM,
Warren Weaver Hall 1302
Tropical Cyclogenesis and Vertical Shear in a Moist Boussinesq Model
3:30PM, Warren Weaver Hall 1302 Atmosphere Ocean Science Colloquium
Leslie Smith, University of Wisconsin -
11AM,
Warren Weaver Hall 1302
Differential Inclusions Describing Unilateral Constraints
11AM, Warren Weaver Hall 1302 Analysis Seminar
Frederic Bernicot
Thursday, January 19, 2012
-
11AM,
Warren Weaver Hall 1302
A Fractional Yamabe Flow and Some Applications
11AM, Warren Weaver Hall 1302 Analysis Seminar
Tianling Jin, Rutgers University
Friday, December 16, 2011
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3:30PM,
Warren Weaver Hall 512
Title TBA
3:30PM, Warren Weaver Hall 512 Student Probability Seminar
TBA
Thursday, December 15, 2011
-
11AM,
Warren Weaver Hall 1302
Regularity of Viscosity Solutions for Hamilton-Jacobi Equations
11AM, Warren Weaver Hall 1302 Analysis Seminar
Daniela Tonon, ICERM and SISSA
Monday, December 12, 2011
-
3:45PM,
Warren Weaver Hall 1302
Vector Diffusion Maps and the Connection Laplacian
3:45PM, Warren Weaver Hall 1302 Mathematics Colloquium
Amit Singer, Princeton University
Friday, December 9, 2011
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3:30PM,
Warren Weaver Hall 512
Title TBA
3:30PM, Warren Weaver Hall 512 Student Probability Seminar
TBA
Thursday, December 8, 2011
-
11AM,
Warren Weaver Hall 1302
The Defocusing Cubic Nonlinear Wave Equation in the Energy Super-Critical Regime
11AM, Warren Weaver Hall 1302 Analysis Seminar
Aynur Bulut, IAS
Monday, December 5, 2011
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12:30PM,
Warren Weaver Hall 1302
Zonal Jets and Energy Cascades in the Ocean Double Gyre
12:30PM, Warren Weaver Hall 1302 Atmosphere Ocean Science Colloquium
David Straub, McGill University
Friday, December 2, 2011
-
3:30PM,
Warren Weaver Hall 512
Large Deviations for Hawkes Process
3:30PM, Warren Weaver Hall 512 Student Probability Seminar
Ling Zhu -
1PM,
Warren Weaver Hall 201
Rational Points via Harmonic Analysis
1PM, Warren Weaver Hall 201 Graduate Student / Postdoc Seminar
Sho Tanimoto -
11AM,
Warren Weaver Hall 201
Local Topological Field Theory and Fusion Categories
11AM, Warren Weaver Hall 201 Geometric Analysis and Topology Seminar
Noah Snyder, Columbia University
Thursday, December 1, 2011
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2PM,
Warren Weaver Hall 1302
On the Atmospheric Wave-Turbulence Jigsaw, and on Plasma Flows in Tokamaks and the Sun's Interior
2PM, Warren Weaver Hall 1302 Atmosphere Ocean Science Colloquium
Michael Mcintyre, University of Cambridge -
11AM,
Warren Weaver Hall 1302
Effective Dynamics of a Non-Linear Wave Equation
11AM, Warren Weaver Hall 1302 Analysis Seminar
Oana Pocovnicu, Imperial College, London
Wednesday, November 30, 2011
-
3:30PM,
Warren Weaver Hall 1302
Climate Determinism Revisited: Multiple Equilibria in a Complex Climate Model
3:30PM, Warren Weaver Hall 1302 Atmosphere Ocean Science Colloquium
John Marshall, MIT
Tuesday, November 29, 2011
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4:30PM,
Warren Weaver Hall 201
Manin'S Conjecture and Balanced Line Bundles
4:30PM, Warren Weaver Hall 201 Algebraic Geometry Seminar
Sho Tanimoto, Courant Institute of Mathematical Sciences
Monday, November 28, 2011
-
3:45PM,
Warren Weaver Hall 1302
The Kolmogorov-Obukhov Theory of Turbulence
3:45PM, Warren Weaver Hall 1302 Mathematics Colloquium
Björn Birnir, Center for Complex and Nonlinear Science and Department of Mathematics, niversity of California, Santa Barbara
Friday, November 25, 2011
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3:30PM,
Location TBA
No Seminar
3:30PM, Location TBA Student Probability Seminar
Tuesday, November 22, 2011
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4:30PM,
Warren Weaver Hall 201
Rational and Elliptic Curves on Surfaces in Projective Space: A Positive-Characteristic Approach
4:30PM, Warren Weaver Hall 201 Algebraic Geometry Seminar
Jordan Thomas , Courant Institute of Mathematical Sciences -
11AM,
Warren Weaver Hall 1314
The Periodic Homogenization of Green's and Neumann Functions
11AM, Warren Weaver Hall 1314 Analysis Seminar
Shen Zhongwei, University of Kentucky
Friday, November 18, 2011
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3:30PM,
Location TBA
No Seminar
3:30PM, Location TBA Student Probability Seminar
-
1PM,
Warren Weaver Hall 1302
The Cost of Trading Factors
1PM, Warren Weaver Hall 1302 Graduate Student / Postdoc Seminar
Petter Kolm, Courant -
11AM,
Warren Weaver Hall 201
Intersection Space Cohomology and Hypersurface Singularities
11AM, Warren Weaver Hall 201 Geometric Analysis and Topology Seminar
Laurentiu Maxim, UW Madison -
11AM,
Warren Weaver Hall 201
Intersection Space Cohomology and Hypersurface Singularities
11AM, Warren Weaver Hall 201 Algebraic Geometry Seminar
Laurentiu Maxim, University of Wisconsin-Madison
Thursday, November 17, 2011
-
11AM,
Warren Weaver Hall 1302
Well-Posedness for Euler 2D in Non-Smooth Domains
11AM, Warren Weaver Hall 1302 Analysis Seminar
Christophe Lacave, Université Paris Diderot (Paris 7)
Wednesday, November 16, 2011
-
3:30PM,
Warren Weaver Hall 1302
What Sets the Mean State of the Extra-Tropical Atmosphere?
3:30PM, Warren Weaver Hall 1302 Atmosphere Ocean Science Colloquium
Malte Jansen, MIT
Tuesday, November 15, 2011
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4:30PM,
Warren Weaver Hall 201
Closed Symmetric Differentials on Surfaces and Their Geometry II
4:30PM, Warren Weaver Hall 201 Algebraic Geometry Seminar
Bruno de Oliveira, University of Miami
Monday, November 14, 2011
-
3:45PM,
Warren Weaver Hall 1302
Scale Bridging Simulations for Soft Matter: Current Status and Conceptual Problems
3:45PM, Warren Weaver Hall 1302 Mathematics Colloquium
Kurt Kremer, Max Planck Institute for Polymer Research, Mainz, Germany
Friday, November 11, 2011
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3:30PM,
Location TBA
No Seminar
3:30PM, Location TBA Student Probability Seminar
-
2PM,
Warren Weaver Hall 1314
Potential Theory on Almost Complex Manifolds
2PM, Warren Weaver Hall 1314 Algebraic Geometry Seminar
Blaine Lawson, Stony Brook University
Thursday, November 10, 2011
-
11AM,
Warren Weaver Hall 1302
A Degree Theory Approach for the Shooting Method
11AM, Warren Weaver Hall 1302 Analysis Seminar
Comgming Li, University of Boulder
Tuesday, November 8, 2011
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4:30PM,
Warren Weaver Hall 201
Closed Symmetric Differentials on Surfaces and Their Geometry I
4:30PM, Warren Weaver Hall 201 Algebraic Geometry Seminar
Bruno de Oliveira, University of Miami
Monday, November 7, 2011
-
3:45PM,
Warren Weaver Hall 1302
Statistical Mechanics on Sparse Random Graphs: Mathematics and Applications
3:45PM, Warren Weaver Hall 1302 Mathematics Colloquium
Amir Dembo, Department of Statistics and Department of Mathematics, tanford University
Friday, November 4, 2011
-
3:30PM,
Warren Weaver Hall 512
Probability Models Arising in De Novo Genome Assembly Problem
3:30PM, Warren Weaver Hall 512 Student Probability Seminar
Mikhail Dvorkin, Algorithmic Biology Lab, St. Petersburg Academic University -
1PM,
Warren Weaver Hall 1302
The Positive Mass Theorem and the Intrinsic Flat Distance
1PM, Warren Weaver Hall 1302 Graduate Student / Postdoc Seminar
Dan Lee, CUNY -
11AM,
Warren Weaver Hall 201
Isoperimetric Structure of Initial Data Sets
11AM, Warren Weaver Hall 201 Geometric Analysis and Topology Seminar
Michael Eichmair, MIT
Thursday, November 3, 2011
-
11AM,
Warren Weaver Hall 1302
On the Local Extension of Killing Vector-Fields in Ricci Flat Manifolds
11AM, Warren Weaver Hall 1302 Analysis Seminar
Alex Ionescu, Princeton University
Wednesday, November 2, 2011
-
3:30PM,
Warren Weaver Hall 1302
Oceanic Overturning in the Adiabatic Regime
3:30PM, Warren Weaver Hall 1302 Atmosphere Ocean Science Colloquium
Christopher Wolfe, Scripps
Tuesday, November 1, 2011
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5PM,
Warren Weaver Hall 605
Stein Manifolds and an Example of Rossi
5PM, Warren Weaver Hall 605 Algebraic Geometry Seminar
Lukas Köhler, Courant Institute of Mathematical Sciences
Friday, October 28, 2011
-
3:30PM,
Warren Weaver Hall 512
Stability of Hawkes Process
3:30PM, Warren Weaver Hall 512 Student Probability Seminar
Dmytro Karabash -
1PM,
Warren Weaver Hall 1302
Monte Carlo Methods
1PM, Warren Weaver Hall 1302 Graduate Student / Postdoc Seminar
Jonathan Goodman, Courant -
11AM,
Warren Weaver Hall 201
On the Geometry of Surfaces in Normed Spaces
11AM, Warren Weaver Hall 201 Geometric Analysis and Topology Seminar
Dmitri Burago, Penn State University
Thursday, October 27, 2011
-
11AM,
Warren Weaver Hall 1302
Asymptotic Models for Internal Waves in the Long Wave Regime, and the Dead Water Phenomenon
11AM, Warren Weaver Hall 1302 Analysis Seminar
Vincent Duchene, Columbia University
Tuesday, October 25, 2011
-
4:30PM,
Warren Weaver Hall 201
Open Problems in Complex Geometry III
4:30PM, Warren Weaver Hall 201 Algebraic Geometry Seminar
Fedor Bogomolov, Courant Institute of Mathematical Sciences -
2PM,
Warren Weaver Hall 1302
Self-Dual Polar Decomposition
2PM, Warren Weaver Hall 1302 Analysis Seminar
Nassif Ghoussoub, University of British Columbia
Monday, October 24, 2011
-
3:45PM,
Warren Weaver Hall 1302
Strong and Weak Epsilon Nets and Their Applications
3:45PM, Warren Weaver Hall 1302 Mathematics Colloquium
Noga Alon, Tel Aviv University and IAS, Princeton
Friday, October 21, 2011
-
3:30PM,
Warren Weaver Hall 512
Beyond the Gaussian Universality Class
3:30PM, Warren Weaver Hall 512 Student Probability Seminar
Ivan Corwin, Microsoft Research and MIT -
1PM,
Warren Weaver Hall 1302
Epistemic Logic and Dynamics of Information Change
1PM, Warren Weaver Hall 1302 Graduate Student / Postdoc Seminar
Andreas Witzel, Courant
Thursday, October 20, 2011
-
11AM,
Warren Weaver Hall 1302
Global Existence and Finite Time Blow-Up for Critical Patlak-Keller-Segel Models with Spatially Inhomogeneous Diffusion
11AM, Warren Weaver Hall 1302 Analysis Seminar
Jacob Bedrossian, Courant
Wednesday, October 19, 2011
-
3:30PM,
Warren Weaver Hall 1302
New Nonlinear Models of Rapidly Rotating Thermal Convection and Baroclinic Instability
3:30PM, Warren Weaver Hall 1302 Atmosphere Ocean Science Colloquium
Geoff Vasil, University of Toronto
Tuesday, October 18, 2011
-
4:30PM,
Warren Weaver Hall 201
The Cr-Embedding Problem in 3-Dimensions II
4:30PM, Warren Weaver Hall 201 Algebraic Geometry Seminar
Charles Epstein, University of Pennsylvania
Friday, October 14, 2011
-
1PM,
Warren Weaver Hall 1302
Applications of Graph Limits in Probability and Statistics
1PM, Warren Weaver Hall 1302 Graduate Student / Postdoc Seminar
Sourav Chatterjee, Courant -
11AM,
Warren Weaver Hall 201
Singularities in 4D Ricci Flow
11AM, Warren Weaver Hall 201 Geometric Analysis and Topology Seminar
Robert Haslhofer, ETH Zurich
Thursday, October 13, 2011
-
5PM,
Warren Weaver Hall 201
Lagrangian Hyperplanes in Holomorphic Symplectic Varieties
5PM, Warren Weaver Hall 201 Algebraic Geometry Seminar
Benjamin Bakker , Courant Institute of Mathematical Sciences -
11AM,
Warren Weaver Hall 1302
Sharp Adams-Type Inequalities in \(\mathbb{R}^n\)
11AM, Warren Weaver Hall 1302 Analysis Seminar
Federica Sani, Courant and University of Milan
Wednesday, October 12, 2011
-
3:30PM,
Warren Weaver Hall 1302
Numerical Modeling of Multiscale Atmospheric Flows: From Cloud Microscale to Climate
3:30PM, Warren Weaver Hall 1302 Atmosphere Ocean Science Colloquium
Wojciech Grabowski, NCAR
Friday, October 7, 2011
-
1PM,
Warren Weaver Hall 1302
Water Vapor and Atmospheric Dynamics, from Convection to the Global Circulation
1PM, Warren Weaver Hall 1302 Graduate Student / Postdoc Seminar
Olivier Pauluis, Courant
Thursday, October 6, 2011
-
11AM,
Warren Weaver Hall 1302
A Krein-Moser Theorem for Vlasov-Poisson
11AM, Warren Weaver Hall 1302 Analysis Seminar
George Hagstrom, Courant
Wednesday, October 5, 2011
-
3:30PM,
Warren Weaver Hall 1302
A Hierarchical Bayesian Statistical Perspective on Spatio-Temporal Dynamics
3:30PM, Warren Weaver Hall 1302 Atmosphere Ocean Science Colloquium
Christopher Wilke, University of Missouri
Tuesday, October 4, 2011
-
4:30PM,
Warren Weaver Hall 201
The Cr-Embedding Problem in 3-Dimensions I
4:30PM, Warren Weaver Hall 201 Algebraic Geometry Seminar
Charles Epstein, University of Pennsylvania
Friday, September 30, 2011
-
1PM,
Warren Weaver Hall 1302
Topological Vorticity and Conserved Geometric Motion
1PM, Warren Weaver Hall 1302 Graduate Student / Postdoc Seminar
Fang-Hua Lin, Courant
Thursday, September 29, 2011
-
11AM,
Warren Weaver Hall 1302
The Energy Critical Schrödinger Equation on the 3D Torus
11AM, Warren Weaver Hall 1302 Analysis Seminar
Benoit Pausader, Courant
Wednesday, September 28, 2011
-
3:30PM,
Warren Weaver Hall 1302
Moisture Sensitivity Studies for an Idealized Midlatitude Storm, with a Nod Towards Global Warming
3:30PM, Warren Weaver Hall 1302 Atmosphere Ocean Science Colloquium
Jimmy Booth, Columbia University
Tuesday, September 27, 2011
-
4:30PM,
Warren Weaver Hall 605
Open Problems in Complex Geometry II
4:30PM, Warren Weaver Hall 605 Algebraic Geometry Seminar
Fedor Bogomolov, Courant Institute of Mathematical Sciences -
10AM,
Warren Weaver Hall 1314
Minimal Surfaces and Entire Solutions of the Allen-Cahn Equation
10AM, Warren Weaver Hall 1314 Analysis Seminar
Xavier Cabre, Universitat Politècnica de Catalunya
Friday, September 23, 2011
-
11AM,
Warren Weaver Hall 905
Mean Curvature Flow of Two-Convex Hypersurfaces
11AM, Warren Weaver Hall 905 Geometric Analysis and Topology Seminar
John Head, NYU
Thursday, September 22, 2011
-
11AM,
Warren Weaver Hall 1302
Long Time Strong Instability and Unbounded Orbits for Some Nonlinear Schrödinger Equations
11AM, Warren Weaver Hall 1302 Analysis Seminar
Zaher Hani, Courant
Tuesday, September 20, 2011
-
5PM,
Warren Weaver Hall 605
One Construction of a K3 Surface with a Dense Set of Rational Points
5PM, Warren Weaver Hall 605 Algebraic Geometry Seminar
Ilya Kazhemanov, Courant Institute of Mathematical Sciences
Monday, September 19, 2011
-
3:45PM,
Warren Weaver Hall 1302
Doing Science in the Open
3:45PM, Warren Weaver Hall 1302 Mathematics Colloquium
Michael Nielsen
Friday, September 16, 2011
-
2PM,
Warren Weaver Hall 605
Open Problems in Complex Geometry I
2PM, Warren Weaver Hall 605 Algebraic Geometry Seminar
Fedor Bogomolov, Courant Institute of Mathematical Sciences
Thursday, September 15, 2011
-
11AM,
Warren Weaver Hall 1302
Triangular Fourier Series and Physical Reality
11AM, Warren Weaver Hall 1302 Analysis Seminar
Camil Muscalu, Cornell University
Wednesday, September 14, 2011
-
3:30PM,
Warren Weaver Hall 1302
Critical Arctic Gateways: Long-Term Observations of Arctic Outflow at Davis Strait
3:30PM, Warren Weaver Hall 1302 Atmosphere Ocean Science Colloquium
Craig Lee, University of Washington
Friday, May 6, 2011
-
3:50PM,
Warren Weaver Hall 202
Planar Dimer Model and Conformal Invariance
3:50PM, Warren Weaver Hall 202 Student Probability Seminar
Titus Lupu
Wednesday, May 4, 2011
-
3:30PM,
Warren Weaver Hall 1302
Mixing, Eddies, and All That: Ocean Parameterization Developments from 4M to 400Km
3:30PM, Warren Weaver Hall 1302 Atmosphere Ocean Science Colloquium
Baylor Fox-Kemper, University of Colorado
Monday, May 2, 2011
-
3:45PM,
Warren Weaver Hall 1302
Fritz John's Ellipsoid and the Geometry of High Dimensional Convex Bodies
3:45PM, Warren Weaver Hall 1302 Mathematics Colloquium
Gilles Pisier, Texas A&M University
Friday, April 29, 2011
-
4:30PM,
Location TBA
No Seminar
4:30PM, Location TBA Student Probability Seminar
-
1PM,
Warren Weaver Hall 1302
Special Screening of: Reflections on a Life in Mathematics: Richard Courant
1PM, Warren Weaver Hall 1302 Graduate Student / Postdoc Seminar
Carol Hutchins, Courant Head Librarian
Wednesday, April 27, 2011
-
3:30PM,
Warren Weaver Hall 1302
Representation of Microphysics in Atmospheric Models (And Why It Matters...)
3:30PM, Warren Weaver Hall 1302 Atmosphere Ocean Science Colloquium
Hugh Morrison, NCAR
Monday, April 25, 2011
-
3:45PM,
Warren Weaver Hall 1302
Title TBA
3:45PM, Warren Weaver Hall 1302 Mathematics Colloquium
Hans Lindblad
Friday, April 22, 2011
-
4:30PM,
Warren Weaver Hall 202
Invariant Gibbs Measures for Nonlinear Schrodinger Equation
4:30PM, Warren Weaver Hall 202 Student Probability Seminar
Partha Dey -
1PM,
Warren Weaver Hall 1302
Energy-Driven Pattern Formation: A New Frontier for the Calculus of Variations
1PM, Warren Weaver Hall 1302 Graduate Student / Postdoc Seminar
Robert Kohn, Courant
Wednesday, April 20, 2011
-
3:30PM,
Warren Weaver Hall 1302
The Challenge to Understand Atmospheric Water Vapor Distributions
3:30PM, Warren Weaver Hall 1302 Atmosphere Ocean Science Colloquium
Stephan Fueglistaler, Princeton University
Monday, April 18, 2011
-
3:45PM,
Warren Weaver Hall 1302
The Turn of the Screw: The History and Optimal Design of an Archimedes Screw
3:45PM, Warren Weaver Hall 1302 Mathematics Colloquium
Chris Rorres, University of Pennsylvania
Friday, April 15, 2011
-
4:30PM,
Location TBA
No Seminar
4:30PM, Location TBA Student Probability Seminar
-
1PM,
Warren Weaver Hall 1302
A Symbol-Based Algorithm for Decoding Noisy Bar Codes
1PM, Warren Weaver Hall 1302 Graduate Student / Postdoc Seminar
Rachel Ward, Courant -
11AM,
Warren Weaver Hall 202
Length Estimates for Curve Shortening Flow and Low Regularity Initial Data
11AM, Warren Weaver Hall 202 Geometric Analysis and Topology Seminar
Joe Lauer, Yale
Wednesday, April 13, 2011
-
3:30PM,
Warren Weaver Hall 1302
Long-Range Forecasting Using Data-Clustering and Information Theory: Demonstration in a Simple Ocean Model
3:30PM, Warren Weaver Hall 1302 Atmosphere Ocean Science Colloquium
Dimitris Giannakis, Courant
Monday, April 11, 2011
-
3:45PM,
Warren Weaver Hall 1302
Fermion Monte Carlo
3:45PM, Warren Weaver Hall 1302 Mathematics Colloquium
Malvin Kalos, Lawrence Livermore National Labs
Friday, April 8, 2011
-
4:30PM,
Location TBA
No Seminar
4:30PM, Location TBA Student Probability Seminar
Wednesday, April 6, 2011
-
3:30PM,
Warren Weaver Hall 1302
Approaches for Modeling Spatio-Temporal Dynamics
3:30PM, Warren Weaver Hall 1302 Atmosphere Ocean Science Colloquium
Christopher Wikle, University of Missouri
Friday, April 1, 2011
-
4:30PM,
Warren Weaver Hall 202
Fluctuations in First-Passage Percolation
4:30PM, Warren Weaver Hall 202 Student Probability Seminar
Tom LaGatta -
1PM,
Warren Weaver Hall 1302
What Controls the Overturning Circulation of the Stratosphere? ... and the Specter of Abrupt Climate Change!
1PM, Warren Weaver Hall 1302 Graduate Student / Postdoc Seminar
Ed Gerber, Courant
Wednesday, March 30, 2011
-
3:30PM,
Warren Weaver Hall 1302
Imaging Turbulent Convection and Dynamo Action in the Sun
3:30PM, Warren Weaver Hall 1302 Atmosphere Ocean Science Colloquium
Shravan Hanasoge, Princeton University
Monday, March 28, 2011
-
3:45PM,
Warren Weaver Hall 1302
Sieving in Orbits
3:45PM, Warren Weaver Hall 1302 Mathematics Colloquium
Alex Kontorovitch, Stony Brook
Friday, March 25, 2011
-
4:30PM,
Warren Weaver Hall 202
Limiting Distribution of Visits of Several Rotations to Shrinking Intervals
4:30PM, Warren Weaver Hall 202 Student Probability Seminar
Ilya Vinogradov -
1PM,
Warren Weaver Hall 1302
New and improved Johnson-Lindenstrauss embeddings via the Restricted Isometry Property
1PM, Warren Weaver Hall 1302 Graduate Student / Postdoc Seminar
Felix Krahmer, Hausdorff Center for Mathematics, University of Bonn
Wednesday, March 23, 2011
-
3:30PM,
Warren Weaver Hall 1302
The Transition from Shallow to Deep Convection
3:30PM, Warren Weaver Hall 1302 Atmosphere Ocean Science Colloquium
Anthony Del Genio, NASA GISS