Geometric and probabilistic estimates for entropy and approximation numbers of operators

Entropy numbers of vector-valued diagonal operators

Journal of Approximation Theory

Entropy Numbers, Operators and Support Vector Kernels

EuroCOLT '99 Proceedings of the 4th European Conference on Computational Learning Theory

Sharp asymptotics of the metric entropy for ellipsoids

Journal of Complexity

Entropy numbers in sequence spaces with an application to weighted function spaces

Journal of Approximation Theory

Full length article: On approximation numbers of composition operators

Journal of Approximation Theory