Weekly Calendar

November 12-16, 2001

Monday Tuesday Wednesday Thursday Friday

Seminars Announcements Conferences Calendar Archive

Items for inclusion in the Weekly Calendar should be submitted via e-mail to Hilda Britt. Deadline for inclusion in the Weekly Calendar is 5 p.m. Thursdays. Speakers are encouraged to provide abstracts.

Orange & Blue Bar

MONDAY, NOVEMBER 12

  
RAP ``Etale cohomology'',  159 Altgeld Hall,  10:00 a.m.
  
Marcin Mazur (Doob Postdoc, UIUC)
Etale cohomology of curves

  
Probability and Statistics Seminar,  122 Illini Hall,  12:00 p.m.
  
Professor Kentaro Hayashi (Department of Psychology, Utah State University)
On alpha coefficient with standardized variables
  
Abstract: The standard error of the alpha coefficient with standardized variables is derived. It is shown that the standard error of the standardized alpha coefficient becomes smaller when the number of examinees and/or items increases. Specifically, the degree of the dependence of the standard error on the number of items is a function of the average correlation coefficients. When the average correlation approaches 1, the standard error of alpha coefficient decreases rapidly as the number of items increases, with the order of . On the other hand, when the items are barely correlated, the increased number of items does not essentially help decrease the standard error of alpha coefficient.

  
Math 400 - Introduction to Graduate Mathematics,  245 Altgeld Hall,  4:00 p.m.
  
Ilya Kapovich (Assistant Professor, UIUC)
Infinite groups as geometric objects

  
VIGRE: Math 500,  243 Altgeld Hall,  4:00 p.m.
No meeting until December 2001


TUESDAY, NOVEMBER 13

  
Symplectic and Contact Geometry RAP,  143 Henry Bldg,  10:00 a.m.
No meeting this week

  
Max Newman Topology,  345 Altgeld Hall,  11:00 a.m.
  
Donald Yau (M.I.T.)
Perhaps it will be: Localization genus and lambda-rings

  
RAP ``Spaces of non-positive curvature'',  243 Altgeld Hall,  11:00 a.m.
  
Jeremy Wong (Graduate Student, UIUC)
The boundary at infinity of a CAT(0)-space

  
Probability and Statistics Seminar,  2 Illini Hall,  11:00 a.m.
Please see listing on Monday at 12:00 p.m.

  
Several Complex Variables Seminar,  243 Altgeld Hall,  12:00 p.m.
  
Bernhard Lamel (Doob Postdoc, UIUC)
Compactness estimates for d-bar

  
Quantum Information Science Seminar,  280 Materials Research Laboratory,  12:00 p.m.
  
Paul Goldbert (Professor, Dept. of Physics, UIUC)
Entanglement

  
Analytic and Elementary Number Theory,  243 Altgeld Hall,  1:00 p.m.
Discussion of graduate number theory courses in Fall 2002, followed by short talks

  
Differential Geometry Seminar,  347 Altgeld Hall,  1:00 p.m.
No meeting this week

  
Logic Seminar,  241 Altgeld Hall,  1:00 p.m.
  
Martin Davis (Visiting Scholar UC Berkeley Professor Emeritus, NYU)
Von Neumann's Contributions to Mathematical Logic

  
Geometric Potpourri Seminar,  243 Altgeld Hall,  2:00 p.m.
  
Professor Zoltan Füredi (UIUC Department of Mathematics)
Covering a triangle with homothetic copies
  
Abstract: Let H be a triangle and let H1,..., Hn be (positive) homothetic copies of H. We prove a conjecture of Bezdek & Bezdek (1984) that if the total area of the n homothetic copies is at least twice the area of H, then there exist translates of H1,..., Hn that cover H.

  
Motivic Cohomology Seminar,  159 Altgeld Hall,  2:00 p.m.
  
Sung Myung (Graduate Student, UIUC)
The regulator map for motivic cohomology using the dilogarithm function (cont.)

  
Stochastic and Nonlinear Analysis,  347 Altgeld Hall,  2:00 p.m.
  
Eliot Fried (Associate Professor, Department of Theoretical and Applied Mechanics, UIUC)
Surface, line, and point defects in nematic elastomers
  
Abstract: A nematic elastomer is a rubber-like analogue of a nematic liquid-crystal formed by cross-linking a polymeric fluid that includes nematic mesogens as main-chain elements and/or as pendant side-groups. The coupling between rubber elasticity and liquid-crystalline order in nematic elastomers lead to unique material properties. In this talk, we will use a simple continuum theory to examine the variety of defects possible in nematic elastomers.

  
RAP on Geometric Representation Theory,  345 Altgeld Hall,  2:30 p.m.
  
William Haboush, (Professor, UIUC)
Chapter 2 of Chriss and Ginzburg (cont.)

  
Graph Theory and Combinatorics,  241 Altgeld Hall,  3:00 p.m.
  
Sergei Bezrukov (University of Wisconsin at Superior)
New Results in Macaulay Theory
  
Abstract: We present several new directions in Macaulay Theory. This theory studies properties of the shadow function in graded posets, i.e. the relations between the cardinality of a subset of level i of a poset and the size of its shadow in level i-1 for i > 0. Informally, a poset is called Macaulay if the shadow function satisfies two natural conditions. Macaulay posets have many applications in different disciplines. The emphasis of this talk is on deriving product theorems for Macaulay posets. The new results include several general constructions, specification of posets that are Macaulay for particular orders, and relations to some other extremal graph and poset problems. We also present several new families of Macaulay posets.

  
Study Seminar on Harmonic Analysis,  347 Altgeld Hall,  3:00 p.m.
  
Dr. Jorge Rivera-Noriega (Doob Postdoc, UIUC)
Harmonic analysis in locally flat domains, cont.
  
Abstract: We are studying the paper of C. Kenig and T. Toro on harmonic analysis in locally flat domains

  
RAP - Descriptive set theory and Rosenthal compacta,  241 Altgeld Hall,  4:00 p.m.
No meeting this week

  
Trjitzinsky Memorial Lecture,  314 Altgeld Hall,  4:00 p.m.
  
Martin Davis (Visiting Scholar, University of California at Berkeley)
Gödel's Theorems and Mathematical Practice
  
Abstract: I. Unsolvability and Undecidability in the Diophantine Realm. The work on the negative solution of Hilbert's 10th problem will be surveyed with emphasis on applications, recent work, and open problems.
Refreshments at 3:15 p.m. in Room 321 Altgeld Hall


WEDNESDAY, NOVEMBER 14

  
RAP ``Etale cohomology",  159 Altgeld Hall,  10:00 a.m.
  
Marcin Mazur (Doob Postdoc, UIUC)
Etale cohomology of curves (cont.)

  
RAP on Quantum Cohomology,  160 English Bldg,  3:00 p.m.
  
Luis Alvarez-Consul (Doob postdoc, UIUC)
A continuation of the October 24 talk

  
Nonstandard Analysis Seminar,  243 Altgeld Hall,  4:00 p.m.
No meeting this week

  
RAP - Conformal invariance, intersection exponents and critical percolation,  145 Altgeld Hall,  4:00 p.m.
  
Robert Bauer (Assistant Professor, UIUC)
Universality for conformally invariant intersection exponents III

  
Trjitzinsky Memorial Lecture,  141 Loomis Lab,  4:00 p.m.
  
Martin Davis (Visiting Scholar, University of California at Berkeley)
  
Abstract: II. Gödel's Legacy. A mainly historical account of his work and his own views about its significance.
NOTE: today's lecture is held in 141 Loomis Lab.
A reception will be held in Room 209, Illini Union, immediately follows.

  
Information Protection Seminar,  114 Coordinated Science Lab,  4:30 p.m.
  
Negar Kiyavash (Coordinated Science Laboratory, UIUC)
XTR Public Key System
  
Abstract: This talk introduces the XTR public key system. XTR, for Efficient and Compact Subgroup Trace Representation is based on a new method to represent elements of a subgroup of a multiplicative group of a finite field. Application of XTR in cryptographic protocols leads to substantial savings both in communication and computational overhead without compromising security.


THURSDAY, NOVEMBER 15

  
Math - Physics (BCDE) Lunch Seminar,  6-110 Engineering Science Bldg,  12:05 p.m.
No meeting this week

  
Several Complex Variables Seminar,  243 Altgeld Hall,  12:00 p.m.
  
Bernhard Lamel (Doob Postdoc, UIUC)
Compactness estimates for d-bar

  
Analytic and Elementary Number Theory,  243 Altgeld Hall,  1:00 p.m.
  
Scott Ahlgren (Professor, UIUC)
Integrals of Eisenstein series
  
Abstract: In his lost notebook, Ramanujan recorded a formula relating a character analogue of the Dedekind eta-function, an integral of a quotient of eta-functions, and a constant which turns out to be a value of the derivative of a certain Dirichlet L-function. In joint work with B. Berndt, A.J. Yee, and A. Zaharescu, we derive an infinite family of formulas which includes Ramanujan's example as a special case.

  
Group Theory,  347 Altgeld Hall,  1:00 p.m.
No meeting this week

  
RAP on Noncommutative Lp spaces,  345 Altgeld Hall,  1:00 p.m. (cont. at 3:00 p.m.)
  
Magdalena Musat (Graduate Student, UIUC)
Noncommutative martingale BMO and interpolation, II
  
Abstract: In connection with the noncommutative martingale Hardy space H1, G. Pisier and Q. Xu introduced the noncommutative martingale BMO and proved that BMO = (H1)*. We will discuss interpolation results (both for the complex and the real method) between noncommutative BMO and noncommutative Lp, where 1 £ p < ¥.

  
Algebraic Geometry Seminar,  347 Altgeld Hall,  2:00 p.m.
No meeting this week

  
Algebraic Number Theory,  241 Altgeld Hall,  2:00 p.m.
  
Iwan Duursma (UIUC)
Bounds for Completely Decomposable Jacobians
  
Abstract: Completely decomposable Jacobians (that is isogenous to a product of elliptic curves) over a finite field are of bounded dimension. Over the binary field we obtain the sharp upper bound 26, which is attained by the Jacobian of the modular curve X(11) of genus 26. Joint work with Jean-Yves Enjalbert, University of Limoges, France.

  
Analysis Seminar,  243 Altgeld Hall,  2:00 p.m.
  
Christian Wolf (Professor, Indiana University at Bloomington)
Measures of maximal and full dimension for polynomial automorphisms of C2
  
Abstract: Let g be a polynomial automorphism of C2. In this talk we discuss the existence of a measure of maximal dimension in the case when g is a hyperbolic mapping. Furthermore we identify the conditions under which g admits a measure of full dimension.

  
Knot Theory RAP,  345 Altgeld Hall,  2:00 p.m.
  
George Francis (Professor, UIUC)
The Anatomy of the Figure-8 Knot Complement (cont.)
  
Abstract: I will describe visually intuitive ways of looking at knot-complements, their hyperbolic structure (when they have one), their foliation by Seifert surfaces and their monodromy. The figure-eight knot is our protagonist in this topological opera. Though most of the ideas are Thurston's, their pictures are most revealing.

  
Commutative Ring Theory Seminar,  243 Altgeld Hall,  3:00 p.m.
  
Phillip Griffith (Professor, UIUC)
The Graded Syzygy Theorem in Mixed Characteristic

  
RAP on Research Problems in Coloring Theory and Extremal Combinatorics,  241 Altgeld Hall,  3:00 p.m.
Research Problems in Combinatorics

  
Trjitzinsky Memorial Lecture,  314 Altgeld Hall,  4:00 p.m.
  
Martin Davis (Visiting Scholar, University of California at Berkeley)
  
Abstract: III. Beyond the Zermelo-Fraenkel Axioms. Almost all of ordinary mathematics can be carried out using only a tiny part of the Zermelo-Fraenkel axioms, but this lecture will examine theorems that require more than these axioms.
Refreshments at 3:15 p.m. in Room 321 Altgeld Hall


FRIDAY, NOVEMBER 16

  
RAP ``Etale cohomology",  159 Altgeld Hall,  10:00 a.m.
  
Marcin Mazur (Doob Postdoc, UIUC)
Etale cohomology of curves (cont.)

  
RAP - Conformal invariance, intersection exponents and critical percolation,  145 Altgeld Hall,  4:00 p.m.
  
Robert Bauer (Assistant Professor, UIUC)
Universality for conformally invariant intersection exponents IV

  
Model Theory Seminar,  141 Altgeld Hall,  4:00 p.m.
TBA

File translated from TEX by TTH, version 2.01.
On 9 Nov 2001, 16:06.