Technion - Israel Institute of Technology
 
                 Department of Mathematics
 
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     PDE AND APPLIED MATHEMATICS SEMINAR
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                                     Two Talks
 
          Please note also the unusual time and place
 
                                      First Talk
 
DATE: Tuesday, December 20, 2011
 
Time: 13:30
 
Place: Amado 919
 
SPEAKER: Tomio Umeda, University of Hyogo
 
TITLE: Non-existence of threshold resonances of magnetic Dirac
operators 
 
ABSTRACT: I would like to talk about threshold energies of magnetic Dirac
operators on R^3. After giving a brief review of the study of threshold
eigenfunctions, I state our recent results on the non-existence of
threshold resonances and illustrate the outline of the proof.
 
(This talk is based on a joint work with Yoshimi Saito.)
 
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Second Talk
 
Time: 14:30
 
Place: Amado 919
 
SPEAKER: Yoshinori Kametaka, Osaka University
 
TITLE: The best constant of discrete Sobolev inequality on C60
Fullerene
 
ABSTRACT: The best constant of discrete Sobolev inequality on a
finite graph with good symmetry is obtained. Regular polyhedra,
truncated regular polyhedra are treated. The most important is the
truncated icosahedron, C60 Fullerene. Triangular, square and
hexagonal lattices on a torus of small size are also treated. Among
these Carbon Nanotubes on a torus are also very interesting.
 
For further info: Yehuda Pinchover   <pincho@techunix.technion.ac.il> 
 
For past and future Applied Math/PDE seminars see:
 <http://www.math.technion.ac.il/pde/seminar.html>
                                 
                              
 
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Technion Math. Net (TECHMATH)
Editor: Michael Cwikel   <techm@math.technion.ac.il> 
Announcement from: Yehuda Pinchover   <pincho@tx.technion.ac.il>