Abstract
We prove some results about the first Steklov eigenvalue d 1 of the biharmonic operator in bounded domains. Firstly, we show that Fichera's principle of duality (Fichera in Atti Accad Naz Lincei 19:411-418, 1955) may be extended to a wide class of nonsmooth domains. Next, we study the optimization of d 1 for varying domains: we disprove a long-standing conjecture, we show some new and unexpected features and we suggest some challenging problems. Finally, we prove several properties of the ball.
| Original language | English |
|---|---|
| Pages (from-to) | 103-131 |
| Number of pages | 29 |
| Journal | Calculus of Variations and Partial Differential Equations |
| Volume | 35 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - May 2009 |
| Externally published | Yes |
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