CAPITAL REGION ALGEBRA/NUMBER THEORY SEMINAR 


Speaker:       Alex Tchernev, Univ. at Albany
Time & Place:  Wednesday, February 14, at 4:30pm, in ES 152A  
Title:         Powers of Gorenstein ideals of grade three 


Abstract: 


We will discuss the notion of Gorenstein ideals, and  in 
particular the Buchsbaum-Eisenbud structure theorem, which 
expresses a Gorenstein ideal of grade three in terms 
of pfaffians of an appropriate alternating matrix. 
Finally, we will describe a family of complexes that are  
"approximately" resolutions for the powers of a given 
Gorenstein ideal of grade three, and we will give 
necessary and sufficient conditions for these complexes 
to be actually resolutions. 

This talk will be self contained and assumes no prior 
knowledge of the subject under discussion. 


Refreshments at 4:15pm in ES 152.