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DTSTAMP:20200908T190000Z
UID:1598880241670@events.msu.edu
CATEGORIES:Conferences / Seminars / Lectures
DTSTART:20200908T190000Z
DTEND:20200908T200000Z
SUMMARY:Math Seminar Series
DESCRIPTION:
Geometry and Topology\n
\n
Yi Ni from Caltech, will
be speaking on the topic of Thurston norm
minimizing Seifert surfaces.\n
\n
Place: Online
(virtual meeting)\n
Let K be a null-homologous
knot in a closed 3-manifold Y, and F be a
Seifert surface. One can cap off the boundary
of F with a disk in the zero surgery on K to
get a closed surface F_0. If we know that F
is Thurston norm minimizing, we can ask whether
F_0 is also Thurston norm minimizing. A classical
theorem of Gabai says that the answer
is Yes when Y is the 3-sphere. Gabai's theorem
can be generalized to many other 3-manifolds
using Heegaard Floer homology. In this talk,
we will discuss a sufficient condition for
F_0 to be Thurston norm minimizing which relates
this property to the 4-genus of the knot.\n\n
Price: free\n
Sponsor: Department of Mathematics\n
Sponsor's Homepage: https://www.math.msu.edu/\n
Contact name: Department of Mathematics\n
Contact phone: (517) 353-0844\n
for more info visit the web at:\n
https://www.math.msu.edu/Seminars/CalendarView.aspx?month-of=September2016\n
LOCATION:Go to Seminars Page for Zoom link and password
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