Abstract
A drum vibrates at distinct frequencies. These frequencies are related to the eigenvalues of a differential operator called the Laplacian. Mathematicians are interested in knowing how much geometric information about the domain (the surface of the drum) can be retrieved from the eigenvalues.
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Suggested Reading
R Bhatia.Fourier Series. TRIM series, Hindustan Book Agency.
K H Paranjape. Geometry.Resonance. Vol. l.No.6.June, 1996.
I Sneddon.Elements of Partial Differential Equations. International student. Edition, McGraw-Hill Kogakusha.
S Thangavelu. Fourier Series.Resonance. Vol.1. No.10. October, 1996.
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Kesavan, S. Listening to the shape of a drum. Reson 3, 26–34 (1998). https://doi.org/10.1007/BF02836078
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DOI: https://doi.org/10.1007/BF02836078