Some properties of eigenfunctions of linear pencils and applications to mixed type operator-differential equations

Volume 27 / 1992

S. Pyatkov Banach Center Publications 27 (1992), 373-382 DOI: 10.4064/-27-2-373-382


In the first part of the paper we study some properties of eigenelements of linear selfadjoint pencils Lu = λBu. In the second part we apply these results to the investigation of some boundary value problems for mixed type second order operator-differential equations.


  • S. Pyatkov

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