Events
Aram Dermenjian, University of Quebec at Montreal, Facial weak order in hyperplane arrangements
We discuss the facial weak order, a poset structure that extends the poset of regions on a central hyperplane arrangement to the set of all faces of the arrangement which was first introduced on the braid arrangements by Krob, Latapy, Novelli, Phan and Schwer. We provide various characterizations of this poset including a global one, a local one, one using…
Brown Bag Lunch
SAS 4201John Perry, University of Southern Mississippi, The dynamic approach to Gröbner basis computation
SAS 4201Most algorithms to compute a Gröbner basis are “static”, inasmuch as they require as input both a set of polynomials and a term ordering, and preserve the term ordering throughout the computation. This talk presents ongoing work on “dynamic” Buchberger algorithms. First described by Sturmfels and Caboara, dynamic algorithms require only a set of polynomials…
Brown Bag Lunch – moved to SAS 3281
SAS 3281Join us tomorrow Wednesdays from 12:00-1:00 in the math graduate lounge for our weekly brown bag lunch. As a reminder all are welcomed including undergraduate students!
Oleksandr Misiats, Virginia Commonwealth University, Patterns around us: a calculus of variations prospective
SAS 4201Crumples in a sheet of paper, wrinkles on curtains, cracks in metallic alloys, and defects in superconductors are examples of patterns in materials. A thorough understanding of the underlying phenomenon behind the pattern formation provides a different prospective on the properties of the existing materials and contributes to the development of new ones. In my talk…
Math Honors Undergraduate Research Presentation: Geneva Collins, Erin Beaton, Natalie Cody and Ethan Dudley, NC State
Geneva Collins Title : Automatic Geometric Theorem Proving: Sangaku From an Algebraic PerspectiveAbstract: During the Edo period (1603-1867 CE) Japan was almost completely closed off from the rest of the world and developed its own mathematical tradition called wasan. Part of this tradition was to hang tablets, known as sangaku, in the eaves of a…
Yuanan Diao, Department of Mathematics and Statistics, UNC Charlotte, Braid Index Bounds Ropelength From Below
For an un-oriented link K, let L(K) be the ropelength of K. It is known that in general L(K) is at least of the order O((Cr(K))3/4), and at most of the order O(Cr(K) ln5 (Cr(K)) where Cr(K) is the minimum crossing number of K. Furthermore, it is known that there exist families of (infinitely many) links with the property…
Math Teachers’ Circle Workshop: Arvind Saibaba, Medical Imaging and other real life uses for mathematics
SAS 2102From ultrasound scanners used before birth to environmental sensors that monitor the pathways of harmful substances, imaging technologies play an important role in human lives. In this workshop, I will explain some of the mathematical ideas behind image reconstructions: how they work, what their limitations are, and what uncertainties are associated with interpreting the images generated by imaging technologies. Bio: Arvind…
Krzysztof Putyra, University of Zurich, An equivalence between gl(2)-foams and Bar-Natan cobordisms
The original construction of the Khovanov homology of a link can be seen as a formal complex in the category of flat tangles and surfaces between them. There is a way to associate a chain map with a link cobordism, but only up to a sign. Blanchet has fixed this by introducing the category of gl(2)-foams, certain singular cobordisms…
Spring 2019 NC State Mathematics Graduation Ceremony
McKimmon Center, Raleigh NCThe Math Graduation Ceremony for Spring 2019 will be held on Friday, May 10th at 10:00am in the McKimmon Center. Directions for the McKimmon Center is located here.
Di Bucklad’s Retirement Celebration
SAS 4104Di will be retiring June 1, 2019. Di has almost twenty-seven years of service to the state and and almost exactly 19 years with the department. Please join us in celebrating her retirement.