# Seminars 2007

IMI Seminars for 2007

- General Seminars

- Number Theory Seminars

- Combinatorics Seminars

- Compressed Sensing Seminars

- Classical Analysis Seminars

## General Seminars

Tuesday, February 13:John ChrispellJason HowellClemson University |
"Finite element approximation of partial differential equations using FreeFem++" |

Monday, February 19:Barbara WohlmuthUniversität Stuttgart, Germany |
"Nonconforming domain decomposition methods and applications in structural mechanics" |

Monday, March 12:Gitta KutyniokJustus-Liebig-Universität Giessen, Germany |
"Shearlets: Multiscale geometric analysis using a wavelet-based approach" |

Thursday, May 3:Francisco Blanco-SilvaPurdue University |
"Function spaces via curvelet decompositions" |

Friday, September 28:Lee JonesUniversity of Massachusetts at Lowell |
"Local minimax estimation and price prediction" |

Wednesday, November 14:Natalia KoptevaUniversity of Limerick, Ireland |
"Maximum norm a posteriori error estimates for singularly perturbed differential equations" |

Thursday, November 15:Vladislav BabenkoDnepropetrovsk National University |
"On optimization of formulae for approximate integration on various classes of univariate and multivariate functions" |

Friday, November 16:John SpougeNational Center for Biotechnology Information |
"The statistics of gapped sequence alignments" |

Monday, November 26:Jutta BibowskiColorado State University |
"The conductivity problem as an inverse problem: the Calderon reconstruction and direct method" |

## Number Theory Seminars

Wednesday, January 24:Chris HallUniversity of Texas at Austin |
"Families of Galois extensions with big groups" |

Wednesday, January 31:Nigel BostonUniversity of South Carolina |
"Random Galois Groups" |

Thursday, February 8:Mihran PapikianStanford University |
"Drinfeld modular varieties and the Weil-Deligne bound" |

Wednesday, February 14:Matt BoylanUniversity of South Carolina |
"Half-integral weight modular form coefficients and special values of L-functions" |

Wednesday, February 21:Michael FilasetaUniversity of South Carolina |
"Applications of Pade approximants to number theory, Part 1" |

Wednesday, February 28:Michael FilasetaUniversity of South Carolina |
"Applications of Pade approximants to number theory, Part 2" |

Friday, March 2:Matt DarnallUniversity of Wisconsin at Madison |
"Bounds on the Star Discrepancy in the Unit Square" |

Wednesday, March 7:Carrie FinchColumbia College/Washington and Lee University |
"Finite groups with exactly n elements of order n" |

Wednesday, March 21:Konstantin OskolkovUniversity of South Carolina |
"Quantum mechanics of Gauss' sums" |

Wednesday, March 28: Nigel BostonUniversity of South Carolina |
"On the equation x^{4}+m*x^{2}*y^{2}+y^{4}=z^{2}" |

Wednesday, April 4: Matt BoylanUniversity of South Carolina |
"Non-vanishing of weakly holomorphic modular form coefficients modulo l and applications" |

Wednesday, April 11:Ognian TrifonovUniversity of South Carolina |
"Covering Systems of the Integers, Part 1" |

Thursday, April 19:Alice SilverbergUniversity of California at Irvine |
"Diffie-Hellman and beyond" |

Thursday, September 6:Matt BoylanUniversity of South Carolina |
"Powers of Euler's infinite product" |

Thursday, September 13:Michael FilasetaUniversity of South Carolina |
"A connection between the factorization of sparse polynomials and an elementary number theoretic problem" |

Thursday, September 20:Kevin JamesClemson University |
"Average Frobenius distributions of elliptic curves" |

Friday, September 28:Elizabeth JurisichCollege of Charleston |
"Modular functions and moonshine phenomena" |

Thursday, October 4:Frank ThorneUniversity of Wisconsin at Madison |
"Maier matrices beyond Z" |

Thursday, October 18:Scott AhlgrenUniversity of Illinois at Urbana-Champaign |
"Rank generating functions as weakly holomorphic modular forms" |

Thursday, November 1:Ognian TrifonovUniversity of South Carolina |
"Covering Systems of the Integers, Part 2" |

Tuesday, November 6:Samuel S. GrossUniversity of South Carolina |
"Elementary proofs of the prime number theorem" |

Thursday, November 15:Amanda FolsomUniversity of Wisconsin at Madison |
"Half-integral weight Maass form correspondences and vector valued forms" |

Friday, December 7:Jeff LagariasUniversity of Michigan |
"Hilbert's 18th Problem" |

## Combinatorics Seminars

Wednesday, January 31:Josh CooperUniversity of South Carolina |
"Where Do Power Laws Come From: A Model-Free Etiology" |

Wednesday, February 7:Lincoln LuUniversity of South Carolina |
"Using Lovasz Local Lemma in the Space of Random Matchings" |

Wednesday, February 14:Attila SaliAlfred Renyi Institute of Mathematics |
"Color critical hypergraphs and forbidden configurations" |

Wednesday, February 28:Rigoberto FlorezUniversity of South Carolina at Sumter |
"A construction of a projective plane in algebraic matroids" |

Wednesday, March 7:Yi ZhaoGeorgia State University |
"Codegree problems for projective geometries" |

Wednesday, March 21:Drago BokalUniversity of Waterloo, Canada |
"Computing quadratic entropy in evolutionary trees" |

Wednesday, April 4:Attila SaliAlfred Renyi Institute of Mathematics |
"SPT (q,k,n-Codes)" |

Wednesday, April 11:Kelly KrossUniversity of South Carolina |
"A symmetric chain decomposition for the necklace poset" |

Monday, April 30:Prasad TetaliGeorgia Institute of Technology |
"A Near Optimal Bound for Pollard's Rho to Solve Discrete Log" |

Wednesday, May 2:Richard AnsteeUniversity of British Columbia, Canada |
"Some Error Theorems for Matchings" |

Wednesday, September 5:Éva CzabarkaUniversity of South Carolina |
"Minor crossing number and crossing number of graphs" |

Wednesday, September 12:Josh CooperUniversity of South Carolina |
"Discrete Stochastic Differentiation" |

Wednesday, September 19:Darren NarayanRochester Institute of Technology |
"Maximum Minimal k-Rankings of Graphs" |

Wednesday, September 26:Lincoln LuUniversity of South Carolina |
"Explicit construction of small Folkman graphs" |

Wednesday, October 3:Gyula O. H. KatonaAlfred Renyi Institute of Mathematics |
"Forbidden inclusion patterns in families of subsets" |

Wednesday, October 24:Daniel GerbnerEötvös Loránd University, Hungary |
"Profile vectors in the lattice of subspaces" |

Wednesday, October 31:Yubo ZouUniversity of South Carolina |
"Decycling Fibonacci Cubes" |

Wednesday, November 7:Jerrold GriggsUniversity of South Carolina |
"Minimum Span Real Number Graph Labellings with Separation Conditions" |

Wednesday, November 14:Yubo ZouUniversity of South Carolina |
"Decycling Cartesian Product of Cycles" |

## Compressed Sensing Seminars

Monday, September 17:Vladimir TemlyakovUniversity of South Carolina |
"New recent results of B. Kashin and V. Temlyakov" |

Monday, September 24:Pavel ZheltovUniversity of South Carolina |
"Greedy algorithms in recovery of signals which are sparse with respect to incoherent dictionaries" |

Monday, October 8:Entao LiuUniversity of South Carolina |
"Compressed sensing and best k-term approximation, part 1" |

Monday, October 22:Entao LiuUniversity of South Carolina |
"Compressed sensing and best k-term approximation, part 2" |

Monday, October 29:Daniel SavuUniversity of South Carolina |
"Some results on L_{1} minimization, Part 1" |

Monday, November 5:Daniel SavuUniversity of South Carolina |
"Some results on L_{1} minimization, Part 2" |

Monday, November 12:Mingriu YangUniversity of South Carolina |
"Some results from the paper 'A simple proof of the restricted isometry property for random matrices' " |

Monday, November 19:Mingriu YangUniversity of South Carolina |
"Some results from the paper 'A simple proof of the restricted isometry property for random matrices' " |

Monday, November 26:Pavel ZheltovUniversity of South Carolina |
"Recent results on greedy approximation in compressed sensing" |

Monday, December 3:Stephen DilworthUniversity of South Carolina |
"A short proof of the concentration inequality for a random projection" |

## Classical Analysis Seminars

Monday, February 12:Goeff DiestelUniversity of South Carolina |
"Understanding the Bilinear Hilbert Transform, Part 1" |

Monday, February 26:Goeff DiestelUniversity of South Carolina |
"Understanding the Bilinear Hilbert Transform, Part 2" |

Monday, March 19:Manfred StollUniversity of South Carolina |
"Some Remarks on Maximal Functions and A_{p} weights, Part 1" |

Monday, March 26:Manfred StollUniversity of South Carolina |
"Some Remarks on Maximal Functions and A_{p} weights, Part 2" |

Monday, April 2:Robert SharpleyUniversity of South Carolina |
"Littlewood-Paley theory, maximal operators and representations, Part 1" |

Monday, April 9:Robert SharpleyUniversity of South Carolina |
"Littlewood-Paley theory, maximal operators and representations, Part 2" |

Monday, April 23:Goeff DiestelUniversity of South Carolina |
"The Carleson-Hunt Theorem and the bilinear Hilbert transform" |

Wednesday, September 12:Pencho PetrushevUniversity of South Carolina |
"Two-level-split Decomposition of Anisotropic Besov Spaces" |

Wednesday, September 19:Francisco Blanco-SilvaPurdue University |
"Hilbert pairs of wavelets" |

Wednesday, September 26:Bojan PopovTexas A & M University |
"Hamilton-Jacobi equations and constrained L_{1} minimization" |

Wednesday, October 3:George KyriazisUniversity of Cyprus |
"Weighted spaces of distributions on the interval and ball" |

Wednesday, October 10:Kamen IvanovBulgarian Academy of Sciences |
"Characterization of weighted approximations by the Post-Widder and Gamma operators" |

Wednesday, October 24:Pencho PetrushevUniversity of South Carolina |
"Decomposition of spaces of distributions induced by Hermite expansions" |

Wednesday, December 5:Kamen IvanovBulgarian Academy of Sciences Pencho PetrushevUniversity of South Carolina |
"Fast needlet approximation and polynomial evaluation on the sphere" |