Previous Conferences & Workshops

May
15
2012

Computer Science/Discrete Mathematics Seminar II

From Irreducible Representations to Locally Decodable Codes
10:30am|West Bldg. Lecture Hall

A $q$-query Locally Decodable Code (LDC) is an error-correcting code that allows to read any particular symbol of the message by reading only $q$ symbols of the code word. In this talk we present a new approach for the construction of LDCs from the...

May
14
2012

Computer Science/Discrete Mathematics Seminar I

Are Lattice Based Cryptosystems Secure Enough?
Nisheeth Vishnoi
11:15am|S-101

The security of several cryptosystems is based on our apparent inability to solve the following computational problem: given as input a basis B for a lattice and a target vector t , find the lattice point closest to t. This problem, referred to as...

May
08
2012

Computer Science/Discrete Mathematics Seminar II

Pseudorandomness from Shrinkage
10:30am|S-101

One powerful theme in complexity theory and pseudorandomness in the past few decades has been the use of lower bounds to give pseudorandom generators (PRGs). However, the general results using this hardness vs. randomness paradigm suffer a...

May
07
2012

Computer Science/Discrete Mathematics Seminar I

Topology of Norms Defined by Systems of Linear forms
11:15am|S-101

Gowers' uniformity norms are defined by average of a function over specific sets of linear forms. We study norms that are similarly defined by a system of linear forms. We prove that for bounded complex functions over $F_p^n$, each such norm is...