Week of September 6-10, 2010
Monday, September 6, 2010
Labor Day - Holiday
Tuesday, September 7, 2010
10:45 AM Math 1220 Instructor Meeting 400 MSC
4:00 PM Math 1280/1300 Meeting 400 MSC
Wednesday, September 8, 2010
9:00 AM Math 1150 Instructor Meeting 400 MSC
11:30 AM Statistics Seminar 459 MSC
Zheng Zeng, Dept of Economics, BGSU
In this talk, we estimate a five-state common factor
model and identify the indexes of credit conditions,
aggregate uncertainty, monetary policy, inflation and
real economic activity. By examining the interactions
between credit and aggregate uncertainty, we find that
credit spreads, especially the riskier bond spreads,
which are the most popular measures of credit
frictions, do carry nontrivial amount of information in
second moment uncertainty besides revealing credit
market conditions. Because of the flight to quality
effect caused by the aggregate uncertainty, the credit
spreads tend to overstate the sizes of credit market
frictions. Also, a shock to aggregate uncertainty is
an important source of the fluctuations in real
economic activity.
1:30 PM Analysis Seminar 459 MSC
Kate Overmoyer
Non-synthetic diagonal operators on the space of functions analytic on the disk
A diagonal operator acting on the space H(D) of
functions analytic on the unit disk is any continuous
linear map having the monomials z^n as eigenvectors and
distinct eigenvalues. An operator admits spectral
synthesis if every closed invariant subspace of the
operator is the closed linear span of some collection
of its eigenvectors. In this talk, we find a class of
diagonal operators which fail to admit synthesis on
H(D). In particular, we show that the diagonal
operator with eigenvalues n^(1/p) placed symmetrically
on finitely many rays fails synthesis on H(D).
2:30 PM Calculator Workshop 459 MSC
Cheryl Grant
Graphing Functions
3:30 PM Algebra Seminar 445 MSC
Rieuwert Blok, BGSU
1-Cohomology of simplicial complexes of groups
3:40 PM Calculus Seminar 447 MSC
1) A discussion of two articles from the MAA website;
"What is conceptual understanding?" by Keith Devlin,
and Launching's "Restore the Integral to the
Fundamental Theorem of Calculus" by David Bressoud.
2) Mary Koshar will present some reading assignments
for calculus I and II students.
Thursday, September 9, 2010
10:45 AM Math 1120 Instructor Meeting 400 MSC
3:45 PM Foundational Math Committee 400 MSC
Friday, September 10, 2010
3:30 PM COLLOQUIUM 459 MSC
Rieuwert Blok, BGSU
Amalgams of Groups
The motivation for the study of amalgams is that it
provides a means for knowing an often fantastically
complicated group (the universal completion of the
amalgam) by local data, that is, by a relatively small
collection of small subgroups called an amalgam.
The rank-2 amalgams for groups of Lie type resulting
from Phan's theorem and the Curtis-Tits theorem, are
used in the Gorenstein-Lyons-Solomon revision of what
might well be called the most momentous theorem in
group theory, the classification of finite simple
groups. An attractive aspect of the theory of amalgams
is that it employs the interplay between groups and
geometric structures. As such, it belongs in the
modern area of geometric group theory.
I will give a concise introduction to the topic, add
some historical perspective, and then focus on some
interesting questions and current developments.
A list of mathematics seminars by subject and other seminars at BGSU is available here.
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