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

We searched integrable 2D homogeneous polynomial potential with a polynomialfirst integral by using the so-called direct method of searching for firstintegrals. We proved that there exist no polynomial first integrals which aregenuinely cubic or quartic in the momenta if the degree of homogeneouspolynomial potentials is greater than 4.Comment: 22 pages, no figures, to appear in J. Phys. A: Math. Ge

A list of all integrable two-dimensional homogeneous polynomial potentials with a polynomial integral of order at most four in the momenta