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On the structure of the class A(ϕ) |
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| Authors: | V. Tsagareishvili |
| Affiliation: | (1) Tbilisi State University, Tbilisi |
| Abstract: | In this paper, we study whether the set A(?) is closed under multiplication f · g, where f and g belong to the class A(?). We also study the problem of the existence of a solution of the equation Bx = C (where B,C ∈ A(?) and B ≠ 0) on the set A(?). |
| Keywords: | the class A(ϕ ) Banach space Khinchine’ s inequality Rademacher function Haar system Walsh system Fourier coefficients |
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