English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

For a subspace $X$ of functions from $L_2$ we consider the minimal number $m$of nodes necessary for the exact discretization of the $L_2$-norm of thefunctions in $X$. We construct a subspace such that for any exactdiscretization with $m$ nodes there is at least one negative weight.

On exact discretization of the $L_2$-norm with a negative weight