DEPARTMENT OF MATHEMATICAL SCIENCES

COMBINATORICS and ALGEBRA SEMINAR

- Feb. 10~
*Sunflowers, Kneser Graphs and Intersecting Families*

Geoff McKenna, George Washington University - Feb. 17~
No talk. We recommend the department

*colloquium*at 3:30.

- Feb. 24~
*On the empty hexagon theorem*

Walter Morris

- Mar. 3~
*Gale transforms*

Jim Lawrence - Mar. 10~
*More Gale Transforms: K_5 in R^3 (or S^3)*

Jim Lawrence - Mar. 24~ No seminar. The
*Math Club*is arranging a talk at 1:15, on the Mathematics of Juggling, by Allen Knutson, UCSD. - Mar. 31~
*The transfer of Krull dimension in fixed rings*

Jay Shapiro - April 7~
*Invariants of n-tuples of points on the Riemann sphere under linear fractional transformations*

Ben Howard, UMCP - April 14~
*On finite groups*

Edith Adan-Bante, U. of Southern Mississippi Gulf Coast - May 4~
*!!3PM!! The plus, minus game*

Klaus Fischer

- Sept. 8 ~
*Graphical condensation and its connection to plane partitions and MacMahon's formula*

Eric Kuo - Sept. 15 ~
*A classification of the minimal ring extensions of an integral domain*

Jay Shapiro - Sept. 22 ~
*Combinatorics of Viterbi Sequences*

Eric Kuo - Sept. 29 ~
*The simple stochastic game*

Walter Morris - Oct. 6 ~
*Extension of vertex maps to graph homomorphisms*

Geir Agnarsson - Oct. 13 ~
*Extension of vertex maps to graph homomorphisms, part II*

Geir Agnarsson - Oct. 20 ~
*No talk* - Oct. 27 ~
*Discrete polymatroids*

Walter Morris - Nov. 3 ~
*No talk* - Nov. 10 ~
*No talk* - Nov. 17 ~
*Case Studies in Shape and Trajectory Optimization: Catenary Problem*

Igor Griva - Dec. 1 ~
*TBA*

Jim Lawrence

- Feb. 18 ~
*Isothetic Parallelotopes and the Binary Intersection Property*

Valeriu Soltan - Mar. 4 ~

Cluttered orderings for the complete bipartite graph and the complete tripartite graph

Tomoko Adachi, Toho University, Japan - Mar. 11 ~
*Positive bases in Euclidean space*

Valeriu Soltan - Mar. 25 ~

On multipartite posets

Geir Agnarsson On multipartite posets - Apr. 1 ~
*Algebra and graph reconstruction*

Geoff McKenna, George Washington University - Apr. 8 ~ NO TALK - we recommend the Math colloquium
- Apr. 22 ~ Good hidden P-matrix sandwiches

Makoto Namiki, Toho University and George Mason University - Apr. 29 ~ Good hidden P-matrix sandwiches, part II

Makoto Namiki, Toho University and George Mason University