Technion - Israel Institute of Technology
                 Department of Mathematics
                                     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
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.)
Second Talk
Time: 14:30
Place: Amado 919
SPEAKER: Yoshinori Kametaka, Osaka University
TITLE: The best constant of discrete Sobolev inequality on C60
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   <> 
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