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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We give a description of recently introduced Doubrov-Ferapontov general heavenly equation in terms of closed differential Pl\"ucker two-form, rationally depending on the spectral parameter. We demonstrate that general heavenly equation is an important generating equation in the context of Takasaki hyper-K\"ahler hierarchy, and it is also directly connected to hyper-K\"ahler geometry through the Gindikin construction. We develop a $\bar{\partial}$-dressing scheme and introduce a formula for the potential satisfying the general heavenly equation. Multidimensional generalization is also outlined.

Doubrov–Ferapontov general heavenly equation and the hyper-Kähler hierarchy