Skip to main content

Champions Court 2 Holiday Spectacular!

Come celebrate the holiday season with everyone in Champions Court 2 by decorating your own stocking or snowflake!  There will be hot chocolate to drink while you decorate!

This event is open to all Champioins Court 2 Residents.  If you are in Wired, this will count as a Wired event!

Date:
-
Location:
4th Floor Rotunda

Discrete CATS Seminar--Dissertation Defense

Title: Polyhedral Problems in Combinatorial Convex Geometry

Abstract: Polyhedra play a special role in combinatorial convex geometry in the sense that they are both convex sets and combinatorial objects.  As such, a polyhedron can act as either the convex set of interest or the combinatorial object describing properties of another convex set.  We will examine two instances of polyhedra in combinatorial convex geometry, one exhibiting each of these two roles.  The first instance arises in the context of Ehrhart theory, and the polyhedra are the central objects of study.  We will examine the Ehrhart h*-polynomials of a family of lattice polytopes called the r-stable (n,k)-hypersimplices, providing some combinatorial interpretations of their coefficients as well as some results on unimodality of these polynomials.  The second instance arises in algebraic statistics, and the polyhedra act as a conduit through which we study a nonpolyhedral problem.  For a graph G, we study the extremal ranks of the closure of the cone of concentration matrices of G via the facet-normals of the cut polytope of G.  Along the way, we will discover that real-rooted polynomials are lurking in the background of all of these problems.  

 

 

 

Date:
-
Location:
745 Patterson Office Tower
Event Series:

Theoretical Seminar: Worldsheet Matter for Electric Flux Strings

We develop a scheme to make exactly solvable gauge theories whose electric flux lines host (1+1)-dimensional symmetry protected phases with non-trivial edge properties. We use this exact `decorated-string-net' framework to construct some interesting models. In particular, we construct an exactly solvable model of a quantum spin liquid whose (gapped) elementary excitations form doublets under an internal symmetry, and hence may be regarded as spin-carrying spinons. The model may be formulated, and is solvable, in any number of dimensions, on any bipartite graph. Another example is a 3d paramagnet which has anomalous surface topological order.

Date:
-
Location:
CP179

Recipes for Spanishness: Cookbooks and Culinary Cultures in Modernizing Spain

The first decades of the 20th century saw a massive migration of rural peasants to cities, a newly mobilizing working class threatened social order through political organization and unrest, and women gained new access to education and paid employment outside the home. These demographic shifts, accompanying the definitive implosion of Spain’s political empire, gave urgency to forging a renewed sense of national-liberal identity. Professor Ingram’s talk explores how cookbooks and other culinary discourses — attempts to represent in text the cooking labor of middle- and working-class women — respond to and shape this period of rapid change.



This lecture is sponsored by the Department of Hispanic Studies, the Graduate School and the Dean’s Office of the College of Arts and Sciences at the University of Kentucky.

Date:
Location:
Niles Gallery
Tags/Keywords:

SWAP Event with 2015 UKAC Eller Billings Summer Research Mini-Grant Recipients

Please, join us for a SWAP (Sharing Work on Appalachia in Progress) Event on Wednesday, December 9, 2015 from 12 p.m. to 1:30 p.m. at the UK Appalachian Center!  This SWAP features talks from three of our 2015 Eller Billings Summer Research Mini-Grant Recipients: Lesly-Marie Buer, a graduate student in Anthropology, Henry Bundy, a graduate student in Anthropology, and Dr. Robin Vanderpool, a faculty member in the Department of Health Behavior in the College of Public Health.  This is a free event for UK Students, Faculty, and Staff, and lunch will be provided.

Date:
-
Location:
UK Appalachian Center

Helping the Hope Center!!

 Come join other residents of Champions Court 2 in service to the Lexington Community!!

On Thursday from 2:30-3:30 pm, we will be making bagged lunches (sandwiches, water, fruit cups) for people at the Hope Center. This event is to support Hunger and Homelessness Awareness Week and the Lexington community during the holiday season. We will spend that hour putting sandwiches together.  The lunches will then be delivered to the Hope Center.

Helping with this service project will count as a Wired event!!

 

Date:
-
Location:
Lobby of CC2

Physics Colloquium: Quantum Phases and Phase Transitions in Two-Dimensional Diffusive Metals at Oxide Interfaces

The two-dimensional diffusive metal stabilized at the interface of SrTiO3 and the Mott Insulator perovskite LaTiO3 [1,2] has challenged many notions related to the formation and electronic behavior of the two dimensional electron gas at the well studies LaAlO3-SrTiO3 interface. Here we discuss specifically the stability of the superconducting phase[3] at LaTiO3 – SrTiO3 interface, the nature of the superconductor – normal metal quantum phase transition (T=0 limit) driven by magnetic field, significance of the field vis-a-vis the Chandrasekhar - Clogston limit for depairing, and how the transition is initiated when the extent of Coulomb interaction amongst charge carriers is modulated by electrostatic gating[4]. The nature of the superconducting condensate is highlighted in the light of the Ti - t2g orbital driven bands and their filling in the presence of a strong Rashba spin – orbit interaction (SOI). Towards the end of the talk, we will also discuss the prominent effects of Rashba SOI on normal state quantum transport and how it renormalizes a Kondo-like electronic behavior in range of temperature Tc < T < 5 K[5,6]. 1. Advanced Materials 22, 4448(2010) 2. Phys. Rev. B 86, 075127(2012) 3. Nature Communications, 1, 89(2010) 4. Nature Materials 12, 542(2013) 5. Phys. Rev. B (Rapid Communication) 90, 081107(2014). 6. Phys. Rev. B 90, 075133(2014)

Refreshments will be served in CP 179 at 3:15 PM

Date:
-
Location:
CP155

Chemistry Department Seminar

----------

Dr. Bruce Palfey from the University of Michigan will be presenting a seminar titled: A New Redox State in Flavin Enzymology.

Faculty Host: Anne-Frances Miller

Abstract

Look in a good biochemistry textbook. It will mention three oxidation states for flavins: fully oxidized, one-electron reduced, and two-electron reduced. These redox forms have been studied since before you were born, and account for a huge amount of the chemistry of flavoenzymes; highly unstable covalent adducts to flavins account for the rest. In particular, a plethora of flavin-dependent monooxygenases have been identified. Back in the age of disco and into the Reagan administration, there was a hot debate over the identity of the flavin intermediate that oxygenates organic substrates. The flavin-N5- oxide, known from chemical synthesis, was proposed as the intermediate, but resoundingly rejected - only the flavin-C4a-hydroperoxide was clearly consistent will all experimental evidence. Thus the flavin-N5-oxide was banished from enzymology - until now. The enzyme EncM is part of the enterocin biosynthetic pathway. It uses O2 to
 
oxygenate a complex polyketide substrate. Years of searching for a flavin-C4a- hydroperoxide oxygenating intermediate were fruitless. Instead, we were shocked - yes, shocked! - to unequivocally identify the flavin-N5-oxide as the species that transferred oxygen to the substrate [1]. This identification rests on mass spectroscopy, isotopic labeling, absorbance spectroscopy, and good old fashioned chemistry [1, 2]. Its discovery leads to a catalytic cycle that is very unusual for a flavoenzyme. With a cool new enzyme intermediate come many questions. What is the mechanism of its formation? What is the mechanism it uses for oxygen-transfer? What kinds of substrates can it oxygenate? Are there any other enzymes that use the flavin-N5-oxide? Etc. 
 
 
Date:
-
Location:
CP 114

Post-Script: Hegel, Freud and Fanon: the Dialectic of Emancipation

Post-script with Professor Stefan Bird-Pollan on his book, Hegel, Freud and Fanon: the Dialectic of Emancipation.  Dr. Bird-Pollan is a colleague from the University of Kentucky's Department of Philosophy.  His recently published book examines how the work of Hegel and Freud helps us reconstruct the theory of the subject in the work of Martiniquan social theorist and psychiatrist Frantz Fanon.  As Bird-Pollan argues, Fanon's view of the subject preserves many important insights of the enlightenment while steering clear of the sorts of racial prejudices which are endemic in European and American society.  This talk will especially be of interest to any English students and faculty interested in race studies, postcoloniality, and the overlap between philosophy and critical theory.

Date:
-
Location:
Niles Gallery
Subscribe to