## Past Events › SUM Series

## Steve Campbell, NC State, “Who’s in control here?”

Control theory is an important topic in applied mathematics that is used in a number of disciplines. Its theoretical foundations involve several areas of mathematics. It is also a topic that is less well known at the undergraduate level. In this talk…

Find out more »## Dan Scofield, NC State

Solid, liquid, gas – we see these phases of matter all around us. But physicists have discovered exotic phases with strange properties, such as superfluids and superconductors. What kinds of phase transitions happen in an extremely cold, thin sheet of matter? What does…

Find out more »## Mette Olufsen, NC State, “Why don’t we (usually) faint when we stand up?”

Basic physics suggests that when we stand up, the blood pressure in our brain should drop dramatically. Such a pressure drop should cause us to faint. But most of us don’t faint when we stand up. In this talk I’ll…

Find out more »## Ephraim Bililign, Taylor Garnowski, William Reese and Brandon Summers, NC State Undergraduate Student Honors Presentations

1. Ephraim Bililign Title: Measuring the temperature of granular systems Abstract: Granular systems, or collections of athermal mesoscale particles, are immune to temperature in the conventional sense. Thus, to describe the behavior of an jammed assortment of grains, we turn…

Find out more »## Beverly Setzer, Samuel Weber and Christopher Cardullo, NC State Undergraduate Student Honors Presentations

1. Beverly Setzer Title: Detecting Hidden Nodes in Neuronal Networks using Adaptive Filtering Abstract: The identification of network connectivity from noisy time series is of great interest in the study of network dynamics. This connectivity estimation problem becomes more complicated…

Find out more »## Nathan Reading, NC State, Rectangulations and Pattern-avoiding permutations

A generic rectangulation is a tiling of a rectangle by rectangles, with no four rectangles sharing a single corner (think: no Arizona, Colorado, New Mexico and Utah). For example: We want to ignore lengths of edges and just look at…

Find out more »## Davis Atkinson, Graham Pash, and Jaye Sudweeks, Modeling the New Jersey Turnpike in 99 Hours

“When am I going to use this?” It’s a question every student has asked at least once. The Modeling Contest in Mathematics (MCM), held annually by COMAP, provides a way for undergraduates to apply the knowledge gained from…

Find out more »## Juanita Pinzon-Caicedo, NC State, Crunched Charms: A Short Intro to Knot Theory

Knot theory is the subarea of topology that studies math- ematical knots or different ways of placing a circle inside 3- dimensional space. Proving that two knots are distinct (or equivalent) is the main problem knot theorists deal with. In…

Find out more »## Cynthia Vinzant, NC State, Slicing Space

Suppose we lazily slice up the SUM series pizza. How many pieces can we make with just a few slices? What if we had a watermelon? Together we will try to answer this prob- lem and explore some of the…

Find out more »## Nathan Reading, NC State, Two triangles in a torus

With a very stretchy square piece of paper, you can make a torus: Glue opposite sides of the square together to make a tube and then stretch and bend the tube to bring the two cir- cular ends together. Since…

Find out more »## Molly Fenn, NC State, Gerrymandering: Math at the Supreme Court

Gerrymandering, the act of drawing political maps to achieve a desirable election outcome, has been increasingly in the news as cases wind their way to the Supreme Court and as the country approaches a new census in 2020. In this…

Find out more »## Ricky Liu, NC State, Zero-knowledge proofs

Suppose you want to convince someone that you know the solution to a problem, but you don’t want them to learn any- thing about the solution. How can you do it? Such a protocol is called a zero-knowledge proof. In…

Find out more »## Cynthia Vincent, NC State, Convex sets and the geometry of numbers

Quite a large polygon can squeeze between the integer points in the plane, but what if it has to be symmetric bout the origin (and avoid all other integer points)? In this talk, I’ll discuss Minkowski’s theorem, which bounds the area of such shapes,…

Find out more »## Sharon Lubkin, NC State, Surprises from modeling lung development

Tissues grow, change shape, and differentiate, function normally or abnormally, get diseased or injured, repair themselves, and sometimes atrophy. This complex suite of behaviors is governed by a complex suite of controls. Nonetheless, we can identify some general principles at work in the…

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