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We establish an upper bound on the multiplicity of eigenvalues of the Schrödinger–Dirichlet operator in dimension two. We give a proof based on a generalized Morse Lemma due to Cheng [3]. Nous établissons une borne supérieure de la multiplicité des valeurs propres de l’opérateur de Schrödinger–Dirichlet en dimension deux. Nous donnons une preuve basée sur un lemme de Morse généralisé dû à Cheng [3].
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Mourad Choulli (2026) studied this question.
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