[Binghamton Geometry/Topology Seminar] Geometry/Topology Seminar
Ross Geoghegan
ross at math.binghamton.edu
Mon Oct 10 14:15:09 EDT 2016
Steve Ferry is Distinguished Professor Emeritus. He left Binghaton
with Emeritus status and took a named chair at Rutgers. Now retired from
Rutgers he has more or less returned to Binghamton. Being emeritus I guess
he wasn't listed.
Ross
On Mon, 10 Oct 2016, BU Dateline wrote:
> We can't find him in the University's directory. What is his position at
> Binghamton?
>
> On Mon, Oct 10, 2016 at 12:43 PM, Christoforos Neofytidis
> <chrisneo at math.binghamton.edu> wrote:
> BINGHAMTON GEOMETRY/TOPOLOGY SEMINAR
>
> Date: Thursday, October 13th, 2016
>
> Time: 2.50 pm
>
> Place: Whitney Hall, Room 100E
>
> Speaker: Steve Ferry (SUNY at Binghamton and Rutgers University)
>
> Title: Distance functions, data, and comparison geometry
>
> Abstract: We show that there are homotopy equivalences $h:N\to M$
> between
> closed manifolds which are induced by cell-like maps $p:N\to X$ and
> $q:M\to X$ but which are not homotopic to homeomorphisms. The
> phenomenon
> is based on construction of cell-like maps that kill certain
> $\bL$-classes. The image space in these constructions is necessarily
> infinite-dimensional. In dimension $>6$ we classify all such
> homotopy
> equivalences. As an application, we show that such homotopy
> equivalences
> are realized by deformations of Riemannian manifolds in
> Gromov-Hausdorff
> space preserving a contractibility function, an observation that has
> consequences in topological data analysis.
>
> NOTE: The seminar has a webpage where the semester's program is
> listed:
>
> http://www2.math.binghamton.edu/p/seminars/topsem
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