Worst case tractability of $L_2$-approximation for weighted Korobov spaces

Huichao Yan, Jia Chen

We study $L_2$-approximation problems ${\text{APP}}_d$ in the worst case setting in the weighted Korobov spaces $H_{d,\a,{\bm \ga}}$ with parameter sequences ${\bm \ga}=\{\ga_j\}$ an…