Abstract
We present conditions that allow us to prove the existence of eigenvalues and characteristic values for operator F(D) − C(λ): L 2(R m) → L 2(R m), where F(D) is a pseudo-differential operator with a symbol F(iξ) and C(λ): L 2(R m) → L 2(R m) is a linear continuous operator.
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Original Russian Text © V.S. Mokeichev, 2017, published in Izvestiya Vysshikh Uchebnykh Zavedenii. Matematika, 2017, No. 7, pp. 30–40.
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Mokeichev, V.S. The existence of eigenvalues for operators acting in L 2(R n). Russ Math. 61, 25–34 (2017). https://doi.org/10.3103/S1066369X17070040
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DOI: https://doi.org/10.3103/S1066369X17070040