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math.NA2025
Brief introduction in greedy approximation
V. Temlyakov
Sparse approximation is important in many applications because of concise form of an approximant and good accuracy guarantees. The theory of compressed sensing, which proved to be…
math.NA2022
Sampling discretization error of integral norms for function classes with small smoothness
V. N. Temlyakov
We consider infinitely dimensional classes of functions and instead of the relative error setting, which was used in previous papers on the integral norm discretization, we conside…