Kolchin Seminar in Differential Algebra
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The Graduate Center
365 Fifth Avenue, New York, NY 10016-4309
General Telephone: 1-212-817-7000

Academic Year 2015–2016
We welcome Professor Xing Gao from Lanzhou University, China, who is currently visiting Professor Li Guo at Rutgers University at Newark. He will be staying for a year, working on, among other topics, Rota-Baxter type algebras and integral differential algebras.

Last updated on February 1, 2016. For Schedules, lecture notes and additional material, see under (or click):
 •  Current Schedule  •   Spring, 2016   •   Past Lectures–Spring, 2016  •  Past Years

Alerts:  During the Spring, 2016 semester, Professors Alice Medvedev (City College) and Alexey Ovchinnikov (Queens College and the Graduate Center) will organize thematic workshops on differential algebra and related topics. Please visit this page for up-to-date announcements.

This KSDA website will be moved to ksda.ccny.cuny.edu soon (date to be announced).


Friday, February 5, 2016, 10:15–11:45 a.m. Room 5382

Richard Gustavson, Graduate Center (CUNY)
Order Bounds for the Rosenfeld-Gröbner Algorithm

In this talk I will describe an upper bound for the orders of derivatives that appear in the Rosenfeld-Gröbner algorithm. The Rosenfeld-Gröbner algorithm computes a regular decomposition of a radical differential ideal in a differential polynomial ring. This algorithm can be used to test for membership in a radical differential ideal and to test the consistency of a system of polynomial differential equations. The upper bound depends only on the orders of the generators of the radical differential ideal, the number of derivations, and the number of differential indeterminates. This is joint work with Alexey Ovchinnikov and Gleb Pogudin.

Tuesday, February 9, 2016 (Friday schedule), No Seminar.

Friday, February 12, 2016 (Lincoln's Birthday, college closed): NO SEMINAR

Friday, February 19, 2016, 10:15–11:45 a.m. Room 5382

Joel Nagloo and Peter Thompson, Graduate Center (CUNY)
Title: TBA

Friday, March 11, 2016, 10:15–11:45 a.m. Room 5382

George Labahn, University of Waterloo, Canada
Title: TBA


Kolchin Seminar in Differential Algebra. For 2016 Spring Semester, KSDA meets most Fridays from 10:15 AM to 11:45 AM at the Graduate Center, with occasion talks also from 2:00 PM to 3:30 PM and at Hunter College, on some Saturdays. The purpose of these meetings is to introduce the audience to differential algebra and related topics. Most lectures will be suitable for graduate students and faculty and will often include open problems. Presentations will be made by visiting scholars, local faculty, and graduate students.

Kolchin Afternoon Seminar in Differential Algebra.This informal discussion series began during the Spring Semester of 2009 and will be continued. Occasionally, for various reasons, we may also schedule guest speakers in the afternoon. Informal sessions, which run from 2:00–4:00 pm, normally go unannounced or are announced at the end of the morning sessions (please check with organizers). All are welcome.

Unless the contrary is indicated, all meetings will be in Room 5382. This room may be difficult to find; please read the following directions. When you exit the elevator on the 5th floor, there will be doors both to your left and to your right. Go through the doors where you see the computer monitors, then turn left and then immediately right through two glass doors. At the end of the corridor, go past another set of glass doors and continue into the short corridor directly in front of you. Room 5382 is the last room on your right.

Security. When you go to the GC you will have to sign in, and it is required that you have some photo ID with you. For directions to the Graduate Center, and for more on security requirements for entering the premise, please click here (updated September 1, 2015).

Hunter College meetings. Occasionally, we also meet on a Saturday at Hunter College, Room E920. Hunter College is on 68th Street and Lexington Avenue, where the No. 4,5,6 subways stop. You need to enter from the West Building (a photo ID is required), go up the escalators to the third floor, walk across the bridge over Lexington Avenue to the East Building, and take the elevator before the Library to the 9th floor. Room 920 is located in a north-east corner.


Past Lectures, Spring 2015


Other Academic Years

   2005–2006    2006–2007    2007–2008    2008–2009    2009–2010    2010–2011    2011–2012    2012–2013    2013–2014    2014–2015   Fall, 2015


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