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 describe the cohomology ring $H^*(J_2;\mathbb{F}_3)$ both as subring of$H^*(3^{1+2}_+;\mathbb{F}_3)$ and with an abstract presentation. We also giveits Poincar\'{e} series. We use as tool a spectral sequence for the stronglyclosed $3$-subgroup of $J_2$. This method might be used to compute thecohomology of any finite simple group with a strongly closed $p$-subgroup.

The cohomology of the sporadic group $J_2$ over $\mathbb{F}_3$