Bounds on the multiplicity of eigenvalues for fixed membranes
classification
🧮 math.AP
math.DG
keywords
greatermultiplicityactuallyboundseigenvalueeigenvaluesfixedhere
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For a membrane in the plane the multiplicity of the $k$-th eigenvalue is known to be not greater than $2k-1$. Here we prove that it is actually not greater than $2k-3$, for $k\ge 3$.
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