Abstract
An abstract theorem on the expansion in generalized eigenvectors of multiparameter problems for Hermitian operators is established. The applications to differential operators are considered.
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References
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Translated from Ukrainskii Matematicheskii Zhurnal, Vol. 45, No. 8, pp. 1166–1169, August, 1993.
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Konstantinov, A.Y., Stadnyuk, A.G. Eigenfunction expansion for symmetric multiparameter problems. Ukr Math J 45, 1302–1306 (1993). https://doi.org/10.1007/BF01070979
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DOI: https://doi.org/10.1007/BF01070979