sponsored by the

Rutgers University
Department of Mathematics

and the

Center for Discrete Mathematics and Theoretical Computer Science (DIMACS)

Founded 2003 by Drew Sills and Doron Zeilberger.

Former co-organizers: Drew Sills (2003-2007), Moa ApaGodu (2005-2006), Lara Pudwell (2006-2008), Andrew Baxter (2008-2011), Brian Nakamura (2011-2013), Edinah Gnang (2011-2013), Matthew Russell (2013-2016), Nathan Fox (2016-2017), Bryan Ek (2017-2018)

Current co-organizers:
Doron Zeilberger (doronzeil {at} gmail [dot] com)
Yonah Biers-Ariel (yb165 {at} math [dot] rutgers [dot] edu)
Mingjia Yang (my237 {at} math [dot] rutgers [dot] edu)

Archive of Previous Speakers and Talks You can find links to videos of some of these talks as well. Currently, our videos are being posted to our Vimeo page. Previously, we had videos posted on our YouTube page.

If you would like to be added to the weekly mailing list, email Mingjia Yang (my237@math...).

Forthcoming Talks

Unless otherwise specified, seminars will be held in Hill 705 on the date indicated from 5:00 PM to 5:48 PM. Professor Zeilberger has promised to enforce the time limits.

Fall 2019 Semester

Date: Thurs., Sept. 19, 2019

Speaker: Adi Ben Israel Rutgers University (RUTCOR)

Title: Contour approximation of data, with applications

Abstract: Given a set of points S in R^n (the data), a contour approximation of S is a function that captures most points of S in its lower level sets, [1]. A concrete application is the home range of an animal population, or the territory occupied by it, shown in 1980 by Dixon and Chapman to involve the harmonic mean of certain distances, [2], a result since then confirmed for many species. The harmonic mean of distances, or resistances, also features in inverse distance weighted interpolation [3], clustering [4], parallel circuits and multi-facility location. This lecture gives an axiomatic framework, and a probabilistic optimization model that unifies the above results, a model applied successfully to clustering and classification.Joint work with Tsvetan Asamov and Cem Iyigun. [longer version]

Date: Thurs., Sept. 26, 2019

Speaker: Yonah Biers-Ariel, Rutgers University.

Title: Flexible Schemes for Pattern-Avoiding Permutations

Abstract: We present an extension of the enumeration schemes of Zeilberger and Vatter so that they can efficiently enumerate many new classes of pattern-avoiding permutations including all such classes with a regular insertion encoding.

Date: Thurs., Oct. 3, 2019
Speaker: Yotam Smilansky, Rutgers University.

Date: Thurs., Oct. 10, 2019
Speaker: Neil Sloane, The OEIS Foundation and Rutgers University

Date: Thurs., Oct. 17, 2019
Speaker: Robert Doughtery-Bliss

Date: Thurs., Oct. 24, 2019
Speaker: TBD

Date: Thurs., Oct. 31, 2019
Speaker: TBD

Date: Thurs., Nov. 7, 2019
Speaker: TBD

Date: Thurs., Nov. 14, 2019
Speaker: TBD

Date: Thurs., Nov. 21, 2019
Speaker: No talk (due to the Dimacs 30 conference held at the Heldrich hotel, New Brunswick)

Date: Thurs., Nov. 28, 2019
Speaker: No talk (Thanksgiving)

Date: Dec. 5, 2019
Speaker: Shashank Kanade, University of Denver.

Spring 2020 Semester

Date: Thurs., Jan. 30, 2020

Speaker: Doron Zeilberger, Rutgers University

Title: 0, 1, 8, 78, 944, 13800, 237432, 4708144, 105822432, 2660215680, 73983185000, 2255828154624, ...: "The sequence that started it all"

Abstract: OEIS sequence A1 (that starts: 0, 1, 1, 1, 2, 1, 2, 1, 5, 2, 2, 1, 5, 1, 2, 1, 14, 1, 5, 1, 5, 2, 2, 1, 15, 2, 2, 5, 4, 1, 4 ...) is not the chronologically first sequence in the amazing On-Line Encyclopedia of Integer Sequences. This honor goes to OEIS sequence A435, that according to Neil Sloane was the "sequence that started it all". In addition to its immense historical significance it is very interesting mathematically, and leads to new sequences. [Joint work with Yukun Yao]

Speaker: TBD

Date: Thurs., Feb. 6, 2020
Speaker: TBD

Date: Thurs., Feb. 13, 2020
Speaker: TBD

Date: Thurs., Feb. 20, 2020
Speaker: TBD

Date: Thurs., Feb. 27, 2020
Speaker: TBD

Date: Thurs., March 5 , 2020
Speaker: TBD

Date: Thurs., March 12 , 2020
Speaker: TBD

Date: Thurs., March 19 , 2020
Speaker: No talk (Spring break)

Date: Thurs., March 26 , 2020
Speaker: Yukun Yao [Thesis defense, tentative]

Date: Thurs., April 2 , 2020
Speaker: Yonah Biers-Ariel [Thesis defense, tentative]

Date: Thurs., April 9, 2020
Speaker: George Szpiro, Neue Zürcher Zeitung

Date: Thurs., April 16 , 2020
Speaker: TBD

Date: Thurs., April 23 , 2020
Speaker: TBD

Date: Thurs., April 30 , 2020
Speaker: TBD