Functions of the form $\sum_{i=1} ^N f_i(x) g_i(t)$ in $L_2$

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Functions of the form $\sum_{i=1} ^N f_i(x) g_i(t)$ in $L_2$. (English). Archivum Mathematicum, vol. 18 (1982), issue 1, pp. 19-22

MSC: 41A30 | MR 683342 | Zbl 0506.41016

References:

[1] Neuman F.: Factorizations of matrices and functions of two variables. to appear in Czechoslovak Math. J. MR 0682133 | Zbl 0517.15012

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