Thursdays - 4:30 p.m.
McHenry Room 4130
• April 6, 2017

No Seminar

April 13, 2017

No Seminar

April 20, 2017

No Seminar

April 27, 2017

Francois Monard

An Excursion through the Art, Math, and Applications of Origami

Origami, a traditional paper-folding discipline from 17th-century Japan, has known new exciting developments over the past three decades: from the beginning of computer-assisted crease pattern design, which helps paper-folders design more and more complex creations, to its use in engineering (blood stents, airbags, and so forth), to the emergence of new forms of artistic origami. The link between origami and mathematics is constantly reinforced and examples abound where these two disciplines feed off of one another. We will go over some of the developments just mentioned, discussing along the way potential creative directions via modular origami or tessellations, or mathematical problems such as the fold-and-cut problem.

May 3, 2017

Alvin Jin

Knot theory, Not theory

Knots are occur commonly in every day life, as well as mathematics.  One of the major questions in knot theory is: how can we tell if a knot is equivalent to the unknot?  If it is equivalent to the unknot, how "far" from the unknot is it?  In more concrete terms, if I have a jumbled up piece of string, how can I tell if I can untangle it?  How long will it take to untangle it?  Here are where knot invariants come in.  I will discuss some of these invariants in this talk.  Typically, the stronger the invariant, the more uncomputable it is.

May 10, 2017

Steven Flynn

An introduction to ordinals and their arithmetic

We will cover the formal definition of an ordinal number and interpret what it means to add, multiply and exponentiate them. Time permitting, we will delve into details about transfinite recursion.

May 18, 2017

No Seminar

May 25, 2017

Gabriel Martins

What is a theory of everything?

﻿We will start by talking about some very basic concepts of quantum mechanics and relativity. The first goal will be to understand what are some of the main difficulties of putting these two theories together. Along the way we will see various familiar mathematical concepts that are important to understanding this puzzle. Towards the end, if time permits, we will discuss some initial notions of quantum field theory, the most successful attempt of solving this problem so far.

May 31, 2017

Nate Sievers

Places Where Stuff Happens: Category Theory By Examples

This talk aims to introduce aspects of category theory in an intuitive and (relatively) concrete way. We use the running example of the list monad from computer science to guide our discussion, starting first with the definition of a category and ending with the kleisli construction.

June 7, 2017

Natalya Jackson

More Primes than Squares

We will prove, using techniques accessible at the Math 19B level, that there are, in some sense, more primes than squares. No prior number theory experience is assumed, but we will also discuss related theorems and conjectures regarding the frequency and distribution of the primes. One million dollars will be paid to the first person who provides the solution to the last problem in this talk!

June 15, 2017
TBA