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/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Presents the summarisation as premium feature

Presents the pdf analysis as premium feature

Presents the zaia usage as premium feature

Presents the access of premium content as premium feature

We consider the question of how to take X such that the nonlinear matrix expression X-XAX attains its maximal and minimal possible ranks