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 Plus annual

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

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The Happy End Theorem of Erdős and Szekeres asserts that for every integer $n$ greater than two there is an integer $N$ such that every set of $N$ points in general position in the plane includes the $n$ vertices of a convex $n$-gon. We generalize this theorem in the framework of certain simple structures, which we call "happy end spaces".

Another Abstraction of the Erdős-Szekeres Happy End Theorem