Picone's identity and the moving plane procedure.
Allegretto, Walter, Siegel, David (1995)
Electronic Journal of Differential Equations (EJDE) [electronic only]
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Allegretto, Walter, Siegel, David (1995)
Electronic Journal of Differential Equations (EJDE) [electronic only]
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Sango, Mamadou (1997)
Electronic Journal of Differential Equations (EJDE) [electronic only]
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Nenov, Svetoslav Ivanov (2001)
Electronic Journal of Differential Equations (EJDE) [electronic only]
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Lazzo, Monica (2001)
Electronic Journal of Differential Equations (EJDE) [electronic only]
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M. Faierman (1994)
Archivum Mathematicum
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In this paper we derive results concerning the angular distrubition of the eigenvalues and the completeness of the principal vectors in certain function spaces for an oblique derivative problem involving an indefinite weight function for a second order elliptic operator defined in a bounded region.
Ziemer, William P.
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Yarur, Cecilia S. (1996)
Electronic Journal of Differential Equations (EJDE) [electronic only]
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