Dec 07 2019

New York Area Theory Day - December 6, 2019

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Saturday, December 7, 2019 - Saturday, December 7, 2019
9:30 AM - 5:00 PM
Type: Workshops
Organizer(s): Alexandr Andoni | Charanjit Jutla | Yevgeniy Dodis
The New York Area Theory Day is a semi annual conference aimed to bring together people in the New York metropolitan area for one day of interaction and discussion about topics in CS theory The meeting is free and open to everyone in particular students are encouraged to attend The
Dec 05 2019

Searching for Modular Companions

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Thursday, December 5, 2019
5:00 PM - 6:00 PM
Type: Seminars | Experimental Math Seminar
Presenter(s): Shashank Kanade - University of Denver
In this talk, I will explain that there are (most likely) no other "modular" companions to certain mod-9 partition identities conjectured jointly with Matthew C. Russell. The experiments crucially hinge
Dec 04 2019

The Karger-Stein Algorithm is Optimal for k-cut

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Wednesday, December 4, 2019
11:00 AM - 12:00 PM
Type: Seminars | Theoretical Computer Science Seminar
Presenter(s): Euiwoong Lee - New York University (NYU)
In the $k$-cut problem, we are given an edge-weighted graph and want to find the least-weight set of edges whose deletion breaks the graph into $k$ connected components. Algorithms due
Dec 04 2019

Dynamic Programming and Combinatorial Game Theory

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Wednesday, December 4, 2019
12:15 PM - 1:15 PM
Type: Seminars | Graduate Combinatorics Seminar
Presenter(s): Yukun Yao - Rutgers University
In this talk we will talk about dynamic programming and combinatorial game theory. Dynamic Programming is a method for solving a complex problem by breaking it down into a collection
Dec 04 2019

DIMACS Executive Committee Meeting

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Wednesday, December 4, 2019
12:45 PM - 2:15 PM
Type: Meetings
Dec 04 2019

DIMACS Year-end Gathering

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Wednesday, December 4, 2019
2:00 PM - 4:00 PM
Type: Meetings
Nov 25 2019

Concentration Inequalities for Finding Rainbow Matchings

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Monday, November 25, 2019
2:00 PM - 3:00 PM
Type: Seminars | Rutgers Discrete Mathematics Seminar
Presenter(s): Andrey Kupavskii - Institute for Advanced Study
Consider a k-partite k-uniform hypergraph on [n]^k. It is not difficult to see that any such hypergraph with more than (s-1)n^{k-1} edges contains a matching of size s. Aharoni and
Nov 22 2019

Three Decades of DIMACS: The Journey Continues

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Friday, November 22, 2019 - Saturday, November 23, 2019
8:30 AM - 8:30 PM
Type: Workshops
Organizer(s): Fred Roberts | Tamra Carpenter
In 2019 both DIMACS and the National Science Foundation s Science and Technology Centers program celebrate 30 years of operation and 30 years of defining and shaping modern research In today s dynamic research landscape 30 years is a remarkable milestone and one that we wish to celebrate in a
Nov 20 2019

Online Vector Balancing and Geometric Discrepancy

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Wednesday, November 20, 2019
11:00 AM - 12:00 PM
Type: Seminars | Theoretical Computer Science Seminar
Presenter(s): Sahil Singla - Princeton University
We consider an online vector balancing question where T vectors, chosen from an arbitrary distribution over [-1,1]^n, arrive one-by-one and must be immediately given a {+, -} sign. The goal
Nov 20 2019

Arrow's Impossibility Theorem

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Wednesday, November 20, 2019
12:15 PM - 1:15 PM
Type: Seminars | Graduate Combinatorics Seminar
Presenter(s): Rashmika Goswami - Rutgers University
Roughly speaking, Arrow's theorem states that in an election with more than two candidates, there is no "reasonable" voting rule that gives a rational outcome. I will discuss this and
Nov 18 2019

Canonical Ramsey Numbers for Edge-Ordered Hypergraphs

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Monday, November 18, 2019
2:00 PM - 3:00 PM
Type: Seminars | Rutgers Discrete Mathematics Seminar
Presenter(s): Mathias Schacht - Yale University
We consider quantitative aspects of a Ramsey theoretic result of Leeb. Leeb showed that any sufficiently large complete k-uniform hypergraph with ordered vertex set and ordered edge set must contain
Nov 14 2019

Systematic Counting of Pattern-Avoiding Partitions and Some New Partition Identities

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Thursday, November 14, 2019
5:00 PM - 6:00 PM
Type: Seminars | Experimental Math Seminar
Presenter(s): Mingjia Yang - Rutgers University
A pattern is a list a = [a1, a2, . . . , ar] (r ≥ 1) of non-negative integers. We say a partition λ = (λ1, . . .
Nov 13 2019

Optimal Data Acquisition for Statistical Estimation

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Wednesday, November 13, 2019
11:00 AM - 12:00 PM
Type: Seminars | Theoretical Computer Science Seminar
Presenter(s): Juba Ziani - University of Pennsylvania
We consider a data analyst's problem of purchasing data from strategic agents to compute an unbiased estimate of a statistic of interest. Agents incur private costs to reveal their data
Nov 13 2019

Helly's Theorem and Generalizations

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Wednesday, November 13, 2019
12:15 PM - 1:15 PM
Type: Seminars | Graduate Combinatorics Seminar
Presenter(s): Quentin Dubroff - Rutgers University
Helly's theorem states that if any d+1 or fewer elements of a finite family of convex sets in R^d have non-empty intersection then there is a point which is contained
Nov 11 2019

Super-Logarithmic Cliques in Dense Inhomogeneous Random Graphs

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Monday, November 11, 2019
2:00 PM - 3:00 PM
Type: Seminars | Rutgers Discrete Mathematics Seminar
Presenter(s): Gwen McKinley - Massachusetts Institute of Technology
In the theory of dense graph limits, a graphon is a symmetric measurable function W from [0,1]^2 to [0,1]. Each graphon gives rise naturally to a random graph distribution, denoted
Nov 07 2019

Diamond Operations on Lattices and Factorizations of Noncommutative Polynomials

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Thursday, November 7, 2019
5:00 PM - 6:00 PM
Type: Seminars | Experimental Math Seminar
Presenter(s): Vladimir Retakh - Rutgers University
We introduce and study new operations on lattices and directed graphs and use them to explain rational relationships among pseudo-roots of noncommutative polynomials. This is a joint work with Michael
Nov 06 2019

Recent Advances in Stochastic Gradient Methods: From Convex to Non-convex Optimization and Deep Learning

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Wednesday, November 6, 2019
11:00 AM - 12:00 PM
Type: Seminars | Theoretical Computer Science Seminar
Presenter(s): Mert Gürbüzbalaban - Rutgers University
For many large-scale optimization and machine learning problems, first-order methods and their accelerated variants based on momentum have been a leading approach for computing low-to-medium accuracy solutions because of their
Nov 06 2019

Faculty Research Talks

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Wednesday, November 6, 2019
12:15 PM - 1:15 PM
Type: Seminars | Graduate Combinatorics Seminar
Presenter(s): Shubhangi Saraf - Rutgers University || Swastik Kopparty - Rutgers University
TBD
Nov 04 2019

Non-Concentration of the Chromatic Number of G(n, 1/2)

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Monday, November 4, 2019
2:00 PM - 3:00 PM
Type: Seminars | Rutgers Discrete Mathematics Seminar
Presenter(s): Annika Heckel - LMU Munich
There are many impressive results asserting that the chromatic number of G(n,p) is sharply concentrated. In 1987, Shamir and Spencer showed that for any function p=p(n), the chromatic number of
Oct 31 2019

The Classical Radiation Reaction Problem

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Thursday, October 31, 2019
5:00 PM - 6:00 PM
Type: Seminars | Experimental Math Seminar
Presenter(s): Michael Kiessling - Rutgers University
Physics folklore says that a classical point charge, when accelerated by some electromagnetic field, produces electromagnetic radiation through which it loses energy and momentum to the field degrees of freedom.