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

A \emph{finite cover} of a group $G$ is a finite collection $\mathcal{C}$ ofproper subgroups of $G$ with the property that $\bigcup \mathcal{C} = G$. Afinite group admits a finite cover if and only if it is noncyclic. Moregenerally, it is known that a group admits a finite cover if and only if it hasa finite, noncyclic homomorphic image. If $\mathcal{C}$ is a finite cover of agroup $G$, and no cover of $G$ with fewer subgroups exists, then $\mathcal{C}$is said to be a \emph{minimal cover} of $G$, and the cardinality of$\mathcal{C}$ is called the \emph{covering number} of $G$, denoted by$\sigma(G)$. Here we investigate the covering numbers of the McLaughlinsporadic simple group and some low degree primitive groups.

The Covering Numbers of the McLaughlin Group and some Primitive Groups of Low Degree