Week of February 21-25, 2011

Monday, February 21, 2011

12:30 PM         Math 1150 Instructor Meeting      459 MSC

1:00 PM          Advisory Committee Meeting        400 MSC

3:30 PM          Calculus Seminar                  459 MSC
                 Leo Pinheiro, BGSU
                 Counter Examples in Calculus

                 True or False questions tend to scare our Calculus
                 students: they require a deeper understanding of the
                 subject and appeal to a more sophisticated level of
                 mathematical thinking.  In this talk we will discuss
                 some interesting counter examples and explore their
                 connections to important theorems in Calculus.

Tuesday, February 22, 2011

10:45 AM         Math 1220 Instructor Meeting      459 MSC

Wednesday, February 23, 2011

1:00 PM          Graduate Committee Meeting        400 MSC

12:30 PM         Foundation Math Committee Meeting 400 MSC

1:30 PM          Analysis Seminar                  459 MSC
                 Leo Pinheiro, BGSU
                 Linear Dynamics and its relations to Classical
                 Dynamical Systems

                 It is a very well known fact that a linear map on a
                 Hilbert space can exhibit chaotic behavior.  In this
                 talk we will show that the relation between the
                 dynamics of linear operators on Hilbert spaces and the
                 non-linear dynamics of continuous maps on compact
                 metric spaces is a very close one. More precisely,
                 there is a very natural bounded linear operator T with
                 the property that any continuous function f on a
                 compact metric space X is topologically conjugate to
                 the restriction of T to an invariant compact set.  The
                 results presented are due to Nathan Feldmann

2:30 PM          Statistics Graduate Seminar       459 MSC
                 Candidate for the position in Statistics 

                 Explanation of the mathematical/statistical background
                 for the colloquium talk today. Especially intended for
                 graduate students in statistics.

3:45 PM          Colloquium                        459 MSC
                 Candidate for the position in Statistics 

Thursday, February 25, 2011

10:45 AM         Math 1210 Instructors Meeting     459 MSC

Friday, February 26, 2011

10:00 AM         Dissertation Defense              459 MSC
                 Tumpa Bhattacharyya, BGSU
                 Filters on positive cone of lattice ordered groups

                 In a recent article "Bazzoni's Conjecture" the authors
                 used lattice-theoretic techniques to positively answer
                 a conjecture of Bazzoni's regarding Prufer
                 domains. Suppose G is an L-group and F is a filter on
                 G^+. Recall that F is a principal filter if it is of
                 the form {g in G^+ : a <= g} for some a in G^+. We say
                 that F is a cold filter if for all P in Min(G), the
                 filter (i.e. the interval) on (G/P)^+ defined by F_P =
                 {g + P : g in F} has a minimum. If every filter on G^+
                 is principal (resp. cold) then we say that the group is
                 principally-filtered (resp. cold-filtered) L-group. In
                 this dissertation we expand on the ideas of cold
                 filters and characterize cold-filtered L-groups.

1:00 PM          Dissertation Defense              459 MSC
                 Daniel R. Shifflet, BGSU
                 Optimally Clean Rings

                 An element of a ring is called strongly clean if it can
                 be written as the sum of a unit and an idempotent that
                 commute.  We will investigate conditions on a strongly
                 clean ring R that imply the formal power series ring
                 R[[x]] to be strongly clean.  It will be shown that
                 this is the case for a class of rings defined as
                 optimally clean, which includes strongly pi-regular and
                 abelian strongly clean rings.  We will then investigate
                 similar conditions for the skew power series ring
                 R[[x;f]] to be strongly clean.

3:30 PM          No Colloquium                     459 MSC

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