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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We study the simultaneous existence of centres for two families of planarZ q -equivariant systems. First, we give a short review aboutZ q -equivariant systems. Next, we present the necessary and sufficient conditions for the simultaneous existence of centres for aZ 2 -equivariant cubic system and for aZ 2 -equivariant quintic system.

Simultaneity of centres in ℤ q -equivariant systems

Simultaneity of centres in ℤ _q -equivariant systems