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

Ansrmacr. We consider a symplectic action of a group G on a symplectic manifold P, which admits a momentum mapping. Assume that G is a semidirect product of G1 by G2. We prove that if the symplectic action of GI has a coadjoint equivariant momentum mapping, and if HI(%,: R) = H2(52: R) 0, then the symplectic action of G has a coadjoint equivariant momentum mapping, where 1 and 52 are the Lie algebras of G1 and G2 respectively.

The existence of a coadjoint equivariant momentum mapping for a semidirect product