Abstract
We prove two mixed versions of the Discrete Nodal Theorem of Davies et. al. [3] for bounded degree graphs, and for three-connected graphs of fixed genus g. Using this we can show that for a three-connected graph satisfying a certain volume-growth condition, the multiplicity of the nth Laplacian eigenvalue is at most 2 [6(n - 1) + 15(2g - 2)]2. Our results hold for any Schrodinger operator, not just the Laplacian.
| Original language | English |
|---|---|
| Pages (from-to) | 1291-1298 |
| Number of pages | 8 |
| Journal | Discrete and Continuous Dynamical Systems |
| Volume | 28 |
| Issue number | 3 |
| DOIs | |
| State | Published - Nov 2010 |
Keywords
- Genus
- Multiplicity of eigenvalues
- Nodal domain
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