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PRODID:-//Mathematics Department//NONSGML mathical.php//EN
X-WR-CALNAME:Mathematics Department
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd716205@math.dartmouth.edu
DTSTART;TZID=America/New_York:20181023T130000
CATEGORIES:Combinatorics Seminar
SUMMARY:Alexander Garver: Reverse plane partitions via
representations of quivers
DESCRIPTION:A reverse plane partition is an order-reversing map from
a poset to the nonnegative integers. Reverse plane partitions have
connections to representation theory as well as combinatorial
algebraic geometry. Starting with the data of a Dynkin quiver and a
choice of minuscule vertex\, one obtains a corresponding minuscule
poset. We show that the reverse plane partitions defined on a
minuscule poset are in bijection with certain isomorphism classes of
representations of the quiver. Our bijection may be regarded as a
(piecewise-linear) generalization of the Robinson--Schensted--Knuth
correspondence. If time permits\, I will discuss applications of our
work to piecewise-linear promotion on minuscule posets. This is
based on joint work with Rebecca Patrias and Hugh Thomas.
LOCATION:Kemeny 201
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd716335@math.dartmouth.edu
DTSTART;TZID=America/New_York:20181023T143000
DTEND;TZID=America/New_York:20181023T153000
CATEGORIES:Functional Analysis Seminar
SUMMARY:Dorin Dumitrascu: Analytic and geometric overview of free
groups
DESCRIPTION:A group G is called amenable if it satisfies one of the
following equivalent properties: there exists a left invariant
mean\; Folner condition\; and every irreducible unitary
representation is weakly contained in the left regular
representation. Abelian and compact groups are basic examples of
amenable groups. In C*-algebraic terms\, amenability is
characterized by the fact that the left regular representation
induces an isomorphism between the max and min group C*-algebras. In
this talk I will discuss a feature of the free groups - the
quintessential non-Abelian groups - that makes them "K-amenable\,"
that is\, satisfying an isomorphism of the group C*-algebras at the
level of K-theory. The talk will be based on the work of Joachim
Cuntz and will be both analytical and geometrical in nature.
LOCATION:307 Kemeny Hall
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd716430@math.dartmouth.edu
DTSTART;TZID=America/New_York:20181023T153000
DTEND;TZID=America/New_York:20181023T163000
CATEGORIES:Applied and Computational Mathematics Seminar
SUMMARY:Bo Zhu: Geometric Approaches for Modeling Complex Fluids and
Solids
DESCRIPTION:Complex physical systems exhibiting mixed-dimensional
geometry and multi-scale mechanics are ubiquitous. Examples include
fluid phenomena\, such as bubbles and jets\, biological structures\,
such as insect wing exoskeletons\, and human-made objects\, such as
microrobots. The beauty and complexity of these systems attract
efforts from scientists\, engineers\, and artists in various fields.
However\, a computational investigation of these systems is
challenging\, due to the non-manifold geometric structures\,
non-linear governing physics\, and the tight coupling between them.
\n\nMy work tackles these challenges by rethinking of the
computation pipeline—from a perspective that aims to blur the line
between discrete geometry and continuous physics. My guiding
principle is to study the hidden low-dimensional topological and
structural characteristics underpinning these complex systems and to
create the most natural geometric analogs in a discrete setting for
efficient simulation and optimization. In this talk\, I will present
two examples to demonstrate this methodology\, including a numerical
simulation approach based on simplicial complexes to model
codimensional fluids and a topology optimization algorithm based on
sparse grids to emerge biomimetic structures. These computational
tools enable the investigation\, discovery\, and development of a
broad range of complex physical systems that are multi-scale and
mixed-dimensional\, with applications in computer graphics\,
computational physics\, and additive manufacturing.
LOCATION:Kemeny 201
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd716542@math.dartmouth.edu
DTSTART;TZID=America/New_York:20181023T160000
CATEGORIES:Geometry Seminar
SUMMARY:Baris Coskunzer: Minimal Surfaces in Hyperbolic 3-Manifolds
DESCRIPTION:Abstract: In this talk\, we will discuss the existence
question for closed embedded minimal surfaces in 3-manifolds. After
reviewing the classical results on the subject\, we will show the
existence of smoothly embedded closed minimal surfaces in infinite
volume hyperbolic 3-manifolds.
LOCATION:307 Kemeny
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd716617@math.dartmouth.edu
DTSTART;TZID=America/New_York:20181025T133000
CATEGORIES:Combinatorics Seminar
SUMMARY:Mike Tait: 8 theorems in extremal spectral graph theory
DESCRIPTION:Theorems in extremal graph theory ask to optimize a
combinatorial invariant over a fixed family of graphs. \nIn this
talk\, we discuss how to prove several theorems in this area where
the graph invariant in question \nis a function of the eigenvalues
or eigenvectors of the graph. Two representative results we will
discuss \nare a proof of a conjecture of Boots and Royle from 1991\,
that the planar graph of maximum spectral radius \n(of its adjacency
matrix) is the join of an edge and a path\, and a proof of a
conjecture of Aldous and Fill \nfrom 1994 on the maximum "relaxation
time" of a random walk.
LOCATION: Haldeman 031
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd7166f6@math.dartmouth.edu
DTSTART;TZID=America/New_York:20181025T150000
CATEGORIES:Combinatorics Seminar
SUMMARY:Vašek Chvátal: Points and Lines
DESCRIPTION:A set of n points in the Euclidean plane determines at
least n distinct lines unless these n points are collinear. In
2006\, Chen and Chvátalasked whether the same statement holds true
in general metric spaces\, where the line determined by points x and
y is defined as the set consisting of x\, y\, and all points z such
that one of the three points x\, y\, z lies between the other two.
We will trace the curriculum vitae of the conjecture that it does
hold true and point out related open problems.\n
LOCATION:Kemeny 201
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd7167d0@math.dartmouth.edu
DTSTART;TZID=America/New_York:20181026T153000
CATEGORIES:Math Colloquium
SUMMARY:Nate Dowlin: Topological applications of Khovanov homology
DESCRIPTION:Khovanov homology is a homology theory for knots in the
3-sphere. It has a fairly simple algebraic definition\, but it seems
to contain a great deal of topological information about the knot.
For a given knot K\, it gives bounds on the minimal genus of an
oriented surface in the 4-ball whose boundary is K\, as well as
bounds on the unknotting number of K. The former is a useful tool
for constructing smooth 4-manifolds which may give counterexamples
to the smooth Poincare conjecture in dimension 4\, the only
dimension in which the conjecture is unsolved.
LOCATION:Kemeny 007
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd7168bd@math.dartmouth.edu
DTSTART;TZID=America/New_York:20181030T130000
CATEGORIES:Combinatorics Seminar
SUMMARY:Piet Lammers: Combinatorial aspects of the monotonic
functions model
DESCRIPTION:This talk is concerned with probability measures on the
set of monotonic functions.\nA function $f:\\mathbb Z^d\\to\\mathbb
Z\\cup\\{-\\infty\,\\infty\\}$ is called monotonic if it is
non-increasing in every coordinate.\nIf $d=2$ then this corresponds
to the dimer model on the hexagonal lattice.\nWe show that an
important combinatorial feature of the model is preserved in higher
dimension.\nIn particular\, this leads to a simple version of Scott
Sheffield's proof of the fact that the surface tension of the model
is strictly convex.\nThis gives rise to the existence of unique
limit shapes and a large deviations principle.
LOCATION:Kemeny 201
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd7169ab@math.dartmouth.edu
DTSTART;TZID=America/New_York:20181030T143000
DTEND;TZID=America/New_York:20181030T153000
CATEGORIES:Algebra and Number Theory Seminar
SUMMARY:Frank Thorne: What is the height of two points in the plane?
DESCRIPTION:The Hilbert scheme Hilb^2(P^2) is the moduli space for
pairs of points in the projective plane\, and its rational points
correspond to rational pairs of points in the plane. ("Rational
pairs of points" means something different from "Pairs of rational
points"\, as I will explain in the talk!)\n\nAfter giving a brief
overview of the question of counting rational points on varieties\,
I'll present asymptotics for the number of points of bounded
height\, for height functions corresponding to a large portion of
the ample cone. After a small amount of algebraic geometry\, we end
up with a lattice point counting problem to solve. \n\nI'll also
talk about some vague ambitions for connecting this and related
questions to number field counting.
LOCATION:Kemeny 343
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd716a8e@math.dartmouth.edu
DTSTART;TZID=America/New_York:20181030T143000
DTEND;TZID=America/New_York:20181030T153000
CATEGORIES:Functional Analysis Seminar
SUMMARY:Dorin Dumitrascu: On K-amenability of a-T-menable groups
DESCRIPTION: In my second presentation\, I will extend the case of
free groups and give a short proof of the isomorphism between the
K-theory groups of the max and min C*-algebras of all a-T-menable
groups. These are groups that admit an affine\, isometric\, and
metrically proper action on an infinite dimensional real Hilbert
space H. The key idea is a realization of the unit in the
representation ring of the group based on the Bott-Dirac operator
associated to H defined by Higson\, Kasparov\, and Trout in their
proof of Bott periodicity for infinite dimensional Hilbert spaces.
This realization is done as an asymptotic Kasparov cycle and the
relevant computations are performed in the bivariant KE-theory
developed by the speaker.\n \nThe presentation reports on joint work
with Nigel Higson.
LOCATION:307 Kemeny
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd716b70@math.dartmouth.edu
DTSTART;TZID=America/New_York:20181030T153000
CATEGORIES:Applied and Computational Mathematics Seminar
SUMMARY:Douglas Cochran: A Geometric View of Multiple-channel Signal
Detection
DESCRIPTION:The problem of testing for the presence of a common but
unknown signal in two or more channels of sensor data has a long
history in sonar and geophysical sensing applications. In recent
years\, the growing availability of sensor networks in numerous
application regimes\, including multistatic radar\, has revitalized
interest in multiple-channel detection and estimation. This talk
will summarize the progress surrounding a prevalent class of such
detection problems over the past fifty years\, emphasizing a
geometric perspective that has underpinned many of the advances and
continues to be fruitful.
LOCATION:Kemeny 201
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd716c5d@math.dartmouth.edu
DTSTART;TZID=America/New_York:20181030T160000
DTEND;TZID=America/New_York:20181030T170000
CATEGORIES:Algebra and Number Theory Seminar
SUMMARY:Robert Lemke Oliver: Inductive methods for counting number
fields
DESCRIPTION:The motivating question of this talk is\, how many
number fields are there of a given flavor (e.g.\, with specified
degree and Galois type) and bounded discriminant? Tautologically\,
fields may be grouped into two classes: those which admit
interesting subfields and those that don't. For example\, degree
$n$ fields whose Galois closure has Galois group $S_n$ do not admit
non-trivial subfields\, and such fields have been counted for $n
\\leq 5$. In this talk\, we instead focus on fields that do admit
interesting subfields\, and we propose a general framework to attack
the associated counting problems. This approach also permits one to
nontrivially bound the average size of the $\\ell$-torsion in the
class groups of such fields\, for example obtaining such results for
the class groups of $D_4$ quartic fields. This is joint work with
Jiuya Wang and Melanie Matchett Wood.\n
LOCATION:Kemeny 343
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd716d6a@math.dartmouth.edu
DTSTART;TZID=America/New_York:20181030T160000
CATEGORIES:Geometry Seminar
SUMMARY:Otis Chodosh: A splitting theorem for scalar curvature
DESCRIPTION:This is joint work with Michael Eichmair and Vlad
Moraru. I will discuss a scalar curvature generalization of the
classical splitting theorem (due to Cheeger--Gromoll) for Ricci
curvature. \n
LOCATION:307 Kemeny
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd716e40@math.dartmouth.edu
DTSTART;TZID=America/New_York:20181101T160000
CATEGORIES:Topology Seminar
SUMMARY:Ina Petkova: Tangle Floer homology for non-Floerists
DESCRIPTION:A knot is a circle in 3-space. A main problem in knot
theory is distinguishing knots (two knots are equivalent if we can
continuously deform one into the other). One way to approach this is
by studying algebraic "knot invariants" — algebraic objects
associated to knots\, which do not change as the knot is deformed.
In 1928\, J. Alexander described a knot invariant\, now called the
Alexander polynomial. In the early 2000s\, Ozsvath and Szabo
constructed a powerful refinement of the Alexander polynomial\,
called knot Floer homology (HFK). Among other properties\, it
detects the genus\, detects fiberedness\, and gives a lower bound on
the 4-ball genus. The original definition involves counting
holomorphic curves in a high-dimensional manifold\, and as a result
can be hard to compute.\n\nTangle Floer homology is a new algebraic
technique for studying HFK\, by cutting a knot into pieces called
tangles\, and studying the individual pieces and their gluing. One
associates a differential graded algebra (DGA) to a sequence of
points\, and a dg bimodule over the respective DGAs to a tangle with
two sets of "ends". Given a decomposition of a knot into tangles\,
the derived tensor product of the bimodules associated to the pieces
recovers the knot Floer homology of the glued knot. After providing
a bit of general background\, we'll try to sketch out a purely
combinatorial definition of this invariant.
LOCATION:201 Kemeny
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd716f14@math.dartmouth.edu
DTSTART;TZID=America/New_York:20181102T153000
CATEGORIES:Math Colloquium
SUMMARY:Peter J. Mucha: Communities in Multilayer Networks
DESCRIPTION:Community detection describes the organization of a
network in terms of patterns of connection\, identifying tightly
connected structures known as communities. A wide variety of methods
for community detection have been proposed\, with a number of
software packages available for performing community detection. In
the past decade\, there has been increased interest in multilayer
networks\, a general framework that can be used to described
networks with multiple types of relationships\, that change in
time\, or that network together multiple kinds of networks. We
describe various generalizations of community detection to
multilayer networks\, including results about detectability limits
and a new post-processing procedure to explore the parameter space
of multilayer modularity\, with an emphasis on using community
detection in applications.
LOCATION:007 Kemeny Hall
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd716fdc@math.dartmouth.edu
DTSTART;TZID=America/New_York:20181108T143000
DTEND;TZID=America/New_York:20181108T153000
CATEGORIES:Algebra and Number Theory Seminar
SUMMARY:Tian An Wong: Eisenstein cycles and modular symbols over
imaginary quadratic fields
DESCRIPTION:Modular symbols describe 1-cycles on the modular curve\,
and have proven to be useful in computations with modular forms. One
class of cycles are called the Eisenstein cycles\, related to
Eisenstein series\, and have been used to provide insights about the
Eisenstein ideal\, an key object in the study of Galois
representations. In this talk\, I will discuss generalizations of
related results to modular symbols over Euclidean imaginary
quadratic fields. This is joint work in progress with Debargha
Banerjee.
LOCATION:Kemeny 341
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd717097@math.dartmouth.edu
DTSTART;TZID=America/New_York:20181108T153000
DTEND;TZID=America/New_York:20181108T163000
CATEGORIES:Applied and Computational Mathematics Seminar
SUMMARY:Stephen Howard: A geometric view of multistatic radar
detection
LOCATION:Kemeny 120
URL:http://www.math.dartmouth.edu/~acms
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd717148@math.dartmouth.edu
DTSTART;TZID=America/New_York:20181109T153000
CATEGORIES:Math Colloquium
SUMMARY:Ken Golden: Celebration of Science at Dartmouth: Modeling
the Melt: What Math Tells Us About Disappearing Polar Sea Ice
DESCRIPTION:The precipitous loss of Arctic sea ice has outpaced
expert predictions. We will \nexplore how mathematical models of key
sea ice processes are being developed to \nimprove projections of
the future of Earth's sea ice packs and the polar ecosystems \nthey
support. Our models are inspired by theories of multiscale composite
materials \nand statistical physics\, and are developed in
conjunction with field experiments that \nwe have conducted in both
the Arctic and Antarctic. The lecture is intended for a wide\,
\ninterdisciplinary audience\, and will conclude with a short video
on a recent Antarctic \nexpedition where we measured fluid and
electromagnetic transport properties of sea ice.
LOCATION:Kemeny 008
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd717209@math.dartmouth.edu
DTSTART;TZID=America/New_York:20181113T130000
CATEGORIES:Combinatorics Seminar
SUMMARY:Anna Pun: Catalan Functions and k-Schur functions
DESCRIPTION:Li-Chung Chen and Mark Haiman studied a family of
symmetric functions called Catalan (symmetric) functions which are
indexed by pairs consisting of a partition contained in the
staircase (n-1\, ...\, 1\,0) (of which there are Catalan many) and a
composition weight of length n. They include the Schur functions
\,the Hall-Littlewood polynomials and their parabolic
generalizations. They can be defined by a Demazure-operator
formula\, and are equal to GL-equivariant Euler characteristics of
vector bundles on the flag variety by the Borel-Weil-Bott theorem.
We have discovered various properties of Catalan functions\,
providing a new insight on the existing theorems and conjectures
inspired by Macdonald positivity conjecture. A key discovery in our
work is an elegant set of ideals of roots that the associated
Catalan functions are k-Schur functions and proved that graded
k-Schur functions are G-equivariant Euler characteristics of vector
bundles on the flag variety\, settling a conjecture of Chen-Haiman.
We exposed a new shift invariance property of the graded k-Schur
functions and resolved the Schur positivity and k-branching
conjectures by providing direct combinatorial formulas using strong
marked tableaux. We conjectured that Catalan functions with a
partition weight are k-Schur positive which strengthens the Schur
positivity of Catalan function conjecture by Chen-Haiman and
resolved the conjecture with positive combinatorial formulas in
cases which capture and refine a variety of problems. This is joint
work with Jonah Blasiak\, Jennifer Morse and Daniel Summers.
LOCATION:Kemeny 201
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd7172e1@math.dartmouth.edu
DTSTART;TZID=America/New_York:20181113T153000
DTEND;TZID=America/New_York:20181113T163000
CATEGORIES:Applied and Computational Mathematics Seminar
SUMMARY:Sam Stechmann: Stochastic models and statistical physics for
clouds\, climate\, and extreme precipitation events
DESCRIPTION:Clouds and precipitation are among the most challenging
aspects of weather and climate prediction. New insights have
recently appeared from a promising analysis of observational data
from a statistical physics perspective. In this talk\, we present
stochastic models that help to solidify this connection. In
particular\, it will be shown that stochastic models of water vapor
dynamics can reproduce a wide array of observational statistics that
characterize clouds and precipitation in terms of critical phenomena
and phase transitions. As one application\, it will be shown that\,
under global warming\, the most significant change in precipitation
statistics is seen in the largest events -- which become even larger
and more probable -- and the distribution of event sizes conforms to
the stochastic models.
LOCATION:Haldeman 252
URL:http://www.math.dartmouth.edu/~acms
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd7173a7@math.dartmouth.edu
DTSTART;TZID=America/New_York:20181115T143000
CATEGORIES:Algebra and Number Theory Seminar
SUMMARY:Angelica Babei: Type and class numbers of orders in central
simple algebras
LOCATION:Kemeny 343
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd71744d@math.dartmouth.edu
DTSTART;TZID=America/New_York:20190103T160000
CATEGORIES:Math Colloquium
SUMMARY:Lassina Dembele: TBA
LOCATION:Haldeman 41
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd7174fa@math.dartmouth.edu
DTSTART;TZID=America/New_York:20190111T153000
CATEGORIES:Math Colloquium
SUMMARY:Christopher Jones: TBA
LOCATION:Kemeny 007
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd71759f@math.dartmouth.edu
DTSTART;TZID=America/New_York:20190117T143000
CATEGORIES:Topology Seminar
SUMMARY:Andrei Maliuitn: TBA
LOCATION:Kemeny 201
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd717642@math.dartmouth.edu
DTSTART;TZID=America/New_York:20190228T143000
CATEGORIES:Topology Seminar
SUMMARY:Joshua Sussan: TBA
LOCATION:Kemeny 201
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd7176e5@math.dartmouth.edu
DTSTART;TZID=America/New_York:20190301T153000
CATEGORIES:Math Colloquium
SUMMARY:Penny Haxell: TBA
LOCATION:Kemeny 007
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd717788@math.dartmouth.edu
DTSTART;TZID=America/New_York:20190328T143000
CATEGORIES:Topology Seminar
SUMMARY:Akram Alishahi: TBA
LOCATION:201 Kemeny
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd71782f@math.dartmouth.edu
DTSTART;TZID=America/New_York:20190405T153000
CATEGORIES:Math Colloquium
SUMMARY:Robert Low: Space-time topology: choices and consequences
DESCRIPTION:I will review some of the possible choices of topology
on a Lorentz manifold and their well-known properties. Following
this\, I will take a more detailed look at some of the advantages
and disadvantages of the main choices. Finally (depending on
progress over the next few months) I may spend some time examining
the special case of 2 dimensional Minkowski space.
LOCATION:007 Kemeny Hall
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd7178e9@math.dartmouth.edu
DTSTART;TZID=America/New_York:20190405T170000
CATEGORIES:Topology Seminar
SUMMARY:Robert Low: Causal structure and spaces of null geodesics
DESCRIPTION:I will review Lorentz manifolds as a model of
space-time\, and how the important notion of causal structure arises
in this context. Then\, observing the fundamental nature of null
geodesics to this structure\, I will describe the space of null
geodesics and the natural topological and geometric structures it
carries. Finally\, I will consider how aspects of the causal
structure of the original space-time is encoded in this space of
null geodesics\, culminating in the notion of Legendrian linking of
those submanifolds in the space of null geodesics representing
points of the space-time.
LOCATION:Kemeny 201
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd7179bf@math.dartmouth.edu
DTSTART;TZID=America/New_York:20190411T163000
CATEGORIES:Topology Seminar
SUMMARY:Alexander Dranishnikov: TBA
LOCATION:Kemeny 201
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd717a63@math.dartmouth.edu
DTSTART;TZID=America/New_York:20190412T153000
CATEGORIES:Math Colloquium
SUMMARY:Alexander Dranishnikov: TBA
LOCATION:Kemeny 007
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd717b07@math.dartmouth.edu
DTSTART;TZID=America/New_York:20190418T143000
CATEGORIES:Topology Seminar
SUMMARY:Steven Boyer: TBA
LOCATION:Kemeny 201
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd717baa@math.dartmouth.edu
DTSTART;TZID=America/New_York:20190418T160000
CATEGORIES:Math Colloquium
SUMMARY:Steven Boyer: TBA
LOCATION:Haldeman 41
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd717c53@math.dartmouth.edu
DTSTART;TZID=America/New_York:20190502T160000
CATEGORIES:Math Colloquium
SUMMARY:Dick Canary: TBA
LOCATION:Haldeman 41
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd717cf6@math.dartmouth.edu
DTSTART;TZID=America/New_York:20190516T160000
CATEGORIES:Math Colloquium
SUMMARY:Jean-Francois Lafont: Totally geodesic submanifolds in
hyperbolic manifolds
DESCRIPTION:I will discuss the various constructions of finite
volume hyperbolic manifolds\, with an emphasis on the arithmetic vs.
non-arithmetic dichotomy. I will then explain why certain
non-arithmetic hyperbolic manifolds can only contain finitely many
closed immersed totally geodesic codimension one submanifolds (joint
with D. Fisher\, N. Miller\, and M. Stover). This gives the first
positive answer to a question raised independently by Alan Reid and
by Curt McMullen.
LOCATION:Haldeman 41
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20181120T054703Z
UID:20181120T0047035bf39fd717dd6@math.dartmouth.edu
DTSTART;TZID=America/New_York:20190524T153000
CATEGORIES:Math Colloquium
SUMMARY:Semyon Dyatlov: TBA
LOCATION:Kemeny 007
END:VEVENT
END:VCALENDAR