Lecture at 4:00 PM in Darwin 108, Coffee in Darwin 108 Foyer at 3:40 PM

SEPTEMBER 9SUPPLY CONTRACTS IN A CAPACITY-CONSTRAINED SUPPLIER OLIGOPOLYElizabeth C. Junqueira, graduate of SSU Mathematics Department and Doctoral Candidate, University of California, Berkeley, will explore a model of the supplier's problem of how much to produce and how to allocate inventory among multiple buyers to achieve various objectives.

SEPTEMBER 16BACK TO THE FUTUREClement E. Falbo, Professor of Mathematics, Sonoma State University, will show how a particle acts when its velocity at a given time is proportional to its position in reversed time. Differential equations with time warps will be discussed.

SEPTEMBER 23BIOLOGICAL FILTERSAngela Cheer, Professor of Mathematics, University of California, Davis, will discuss the study of animal gills and hairy arrays through simulation of fluid flow around these structures. This recent work uses state-of-the-art computational fluid dynamics technology.

SEPTEMBER 30WOMEN ARCHITECTS, MATHEMATICS, AND THE RATIONALIZED HOUSEHOLD IN GERMANY, 1900-1930Despina M. Stratigakos, Doctoral Candidate, Department of History and Art, Bryn Mawr College, will discuss the state of mathematics education in Germany in the early 1900s and how mathematics was applied to domestic architecture and housework in the form of ergography, the science of fatigue.

OCTOBER 7GENERALIZED DEBRUIJN SEQUENCES: WHEN BINARY CIRCLES JUST AREN'T ENOUGH ANYMORETony Barcellos, Professor of Mathematics, American River College, will discuss directed graphs and problems encountered in counting them. DeBruijn sequences are a special combinatorial construct that appear in several places in mathematics.

OCTOBER 14BEES DO ITRad Dimitric, Visiting Scholar, University of California, Berkeley, will discuss two- and three-dimensional mathematical aspects of bee cell construction.

OCTOBER 21GENERAL EQUILIBRIUM IN AN EDGEWORTH BOXJane B. Millar, Professor of Mathematics, Santa Rosa Junior College, will discuss how to find bliss in an Edgeworth box with a little help from economic theory and calculus when endowed with less than optimal amounts of bread and wine.

OCTOBER 28A SINGULAR VIEW OF THE GAMMA FUNCTIONDavid Sklar, Senior Optical Designer, SOLA Optical USA, former Mathematics faculty of SSU, will discuss some well-known properties of the Gamma Function and a weak version of the Weierstrass Factorization Theorem. They will be used to illuminate some beautiful formulas connecting gamma functions, exponentials, and trigonometric functions.

NOVEMBER 4A SOCIETY OF QUESTIONERS AND QUESTIONEES: ON A FORGOTTEN ARGUMENT AGAINST SAMPLING HUMAN POPULATIONSZeno G. Swijtink, Professor of Philosophy, Sonoma State University, will raise the question: Is statistics a handmaiden of technocrats or a tool for self-governance by citizens? He will also address problems with the year 2000 United States census.

NOVEMBER 11

PERIODIC POINTSEdward C. Keppelmann, Professor of Mathematics, University of Nevada, Reno, will introduce the concept of periodic points of a function from a set to itself. Some interesting estimates on the number of periodic points will be explored.

NOVEMBER 18LEAST STATISTICALLY-DEPENDENT BASIS AND ITS APPLICATION TO IMAGE MODELINGNaoki Saito, Associate Professor of Mathematics, University of California, Davis, will describe how to compute a close-to-the-best coordinate system for rapid image compression and modeling. An application to modeling of human faces will be explored.

NOVEMBER 25HOLIDAY

DECEMBER 2EIGENVALUES, EIGENVECTORS, AND GRAPH PARTITIONINGPeter Pacheco, Associate Professor of Mathematics, University of San Francisco, will show how some heuristic algorithms help solve the NP-hard problem of graph partitioning. One of the best heuristic algorithms involves an eigenvalue and an eigenvector of a matrix.

Parking permits ($1.50) are required Monday through Thursday 6am -10pm. No public parking is permitted in reserved spaces at any time.