Colloquium: Non-uniform Complexity in Cryptography

Speaker: 

Neal Koblitz

Institution: 

University of Washington

Time: 

Thursday, May 2, 2019 - 4:00pm to 5:00pm

Host: 

Location: 

NS2-2201

Somewhat unexpectedly, a near consensus among theoreticians is that cryptographic theorems should be proved in the non-uniform model of complexity, rather than the standard uniform complexity model developed by Alan Turing, the “father of computer science.” In joint work with Alfred Menezes of the University of Waterloo, we have criticized the use of non-uniformity in cryptography, finding that even some of the most distinguished researchers have been led badly astray by their misplaced faith in non-uniformity

Public Lecture: String Theory and the Geometry of the Universe’s Hidden Dimensions

Speaker: 

Shing-Tung Yau

Institution: 

Harvard University

Time: 

Thursday, April 26, 2018 - 7:00pm to 8:00pm

Location: 

UCI Student Center, Crystal Cove Auditorium

String Theory and the Geometry of the Universe’s Hidden Dimensions

Exploring the Hidden Dimensions of our Universe Through Geometry 
Shing-Tung Yau
Thursday, April 26, 2018 | 7:00pm 
UCI Student Center, Crystal Cove Auditorium 

Historically, advances in mathematics and our understanding of the physical universe have often gone hand in hand. Come hear from one of the world’s most distinguished mathematicians how this close interplay has continued to deepen in recent times with new mathematical breakthroughs in geometry and exciting physical theories that propose extra hidden dimensions in our universe.

Shing-Tung Yau is Harvard University’s William Caspar Graustein Chair Professor of Mathematics and Professor of Physics. His worldwide influence on mathematics and math/science education has few equals. He has made seminal contributions in many different fields of modern mathematics and also has had significant impact in physics, computer science, and technology. His many celebrated achievements include laying the mathematical foundation of Einstein’s general theory of relativity and many of today’s physical theories of spacetime with extra dimensions. Throughout his career, he has been a tireless educator having initiated a number of math and science competitions at the high school and university levels, established seven world-class mathematical research centers worldwide, and also wrote three noted popular science books. Dr. Yau was born in 1949 in Guangdong, China. He earned his Ph.D. from UC Berkeley in 1971, was appointed Professor at Stanford University in1974, and joined Harvard University in 1987. He is a member of the U.S. National Academy of Sciences, the American Academy of Arts and Sciences and the Academia Sinica. He has been awarded numerous top prizes including the Fields Medal, the MacArthur Fellowship, the Wolf Prize, and the U.S. National Medal of Science.

Please RSVP at https://ps.uci.edu/Yau

Parking for this event is available for $10 at the Student Center Parking Structure located on the corner of Pereira Dr. and West Peltason. This lecture is free and open to the public. School groups and media representatives should contact Tatiana Arizaga at tarizaga@uci.edu

"Random Matrix Theory and Toeplitz operators"

Speaker: 

Persi Diaconis

Institution: 

Stanford

Time: 

Friday, April 28, 2017 - 2:00pm to 3:00pm

Location: 

NS2 1201

Abstract: Szegö's theorem and the Kac-Murdoch-Szegö theorems are
classical asymptotic results about the distribution of the eigenvalues
of structured matrices. I will explain how these are useful in a
variety of applications (in particular analysis on Heisenberg groups)
_and_ show how they are equivalent to lovely theorems in random matrix
theory.

"Adding Numbers and Shuffling Cards"

Speaker: 

Persi Diaconis

Institution: 

Stanford

Time: 

Thursday, April 27, 2017 - 4:00pm

Location: 

PSCB 140

Abstract: When numbers are added in the usual way, "carries" occur along
the way. Making math sense of the carries leads to all sorts of
corners, in particular to the mathematics of shuffling cards. I will
show that it takes seven ordinary riffle shuffles to mix up 52 cards and
explain connections to fractals and other lovely mathematical objects.
This is a talk for a general audience, no specialist knowledge needed.

On some $q$-difference equations with remarkable monodromy

Speaker: 

Andrei Okounkov

Institution: 

Columbia University

Time: 

Thursday, May 12, 2016 - 4:00pm to 5:00pm

Host: 

Location: 

NS2 1201

I will discuss certain remarkable q-difference equations with regular singularities that appear in enumerative K-theory and representation theory. This class includes, in particular, the quantum Knizhnik-Zamolodchikov equations of Frenkel and Reshetikhin. Remarkably, the geometric origin of these equations helps with the computations of the monodromy, as shown in our join work with Mina Aganagic.

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