GEORGE MASON UNIVERSITY
DEPARTMENT OF MATHEMATICAL SCIENCES
COLLOQUIUM
FEBRUARY 13, 2015


Speaker: Michael Somos, Georgetown University

Title: Elliptic sequences and Pfaffian Triples

Abstract: Elliptic sequences -- a generalization of elliptic divisibility sequences -- can be defined by an infinite number of three term homogeneous fourth degree algebraic equations each of which is determined by a triple of quadruples of positive integers which I have named Pfaffian triples. I have recently discovered some combinatorial properties of Pfaffian triples which relate them to sequences in the On-Line Encyclopedia of Integer sequences (OEIS). A brief introduction to Elliptic sequence and Pfaffian triples is found in my Essay "In the Elliptic Realm" which is on the web.

Time: Friday, February 13, 2015, 3:30-4:20 p.m.

Place: Exploratory Hall, room 4106

Refreshments will be served at 3:00 p.m.

Department of Mathematical Sciences
George Mason University
4400 University Drive, MS 3F2
Fairfax, VA 22030-4444
http://math.gmu.edu/
Tel. 703-993-1460, Fax. 703-993-1491