## Functional equations with a shift in spaces of analytic functions in a half-plane.(English. Russian original)Zbl 0469.30025

Sov. Math., Dokl. 23, 50-52 (1981); translation from Dokl. Akad. Nauk SSSR 256, 51-53 (1981).

### MSC:

 30D55 $$H^p$$-classes (MSC2000) 46E15 Banach spaces of continuous, differentiable or analytic functions 47A10 Spectrum, resolvent 46E35 Sobolev spaces and other spaces of “smooth” functions, embedding theorems, trace theorems