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 prove that for a fibration of simply-connected spaces of finite type$F\hookrightarrow E\to B$ with $F$ being positively elliptic and $H^*(F,\qq)$not possessing non-trivial derivations of negative degree, the base $B$ isformal if and only if the total space $E$ is formal. Moreover, in this case thefibration map is a formal map. As a geometric application we show that positivequaternion K\"ahler manifolds are formal and so are their associated twistorfibration maps.

On fibrations with formal elliptic fibers