A note on certain functional determinants. (Summary).
The best L2-approximation by finite sums of functions with separable variables.
A note on certain functional determinants.
Some converse theorems in the asymptotic theory of ordinary differential equations
The second order differential equation with an oscillatory coefficient
A linear inequality of Gronwall's type containing multiple integral
Some factorizations of matrix functions in several variables
We establish some criteria for a nonsingular square matrix depending on several parameters to be represented in the form of a matrix product of factors which depend on the single parameters.
Decomposable functions of several variables.
Decomposition of smooth functions of two multidimensional variables
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