Makhkamov K. Sh.
Ukr. Mat. Zh. - 1994. - 46, № 11. - pp. 1527–1533
We establish the exact power order of information complexity for integral equations whose kernels have power singularities and free terms belong to the corresponding Hölder space.
On the exact degree of complexity of a class of operator equations of the second kind in a Hilbert space
Ukr. Mat. Zh. - 1994. - 46, № 7. - pp. 893–903
An exact complexity exponent is found for an approximate solution of a certain class of operator equations in a Hilbert space. A method for information setup and the algorithm realizing an optimal order are given. As a consequence, we find an exact complexity exponent for an approximate solution of Fredholm integral equations of second kind with kernels and free terms having square integrable ψ-derivatives.
Ukr. Mat. Zh. - 1991. - 43, № 5. - pp. 639–648