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

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 Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

We construct a contact form on R^{2n+1}, n at least 2, equal to the standardcontact form outside a compact set and defining the standard contact structureon all of R^{2n+1}, which has trapped Reeb orbits, including a torus invariantunder the Reeb flow, but no closed Reeb orbits. This answers a question posedby Helmut Hofer.

Trapped Reeb orbits do not imply periodic ones