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

In this series of papers, we investigate the spreading and vanishing dynamicsof time almost periodic diffusive KPP equations with free boundaries. Suchequations are used to characterize the spreading of a new species in timealmost periodic environments with free boundaries representing the spreadingfronts. In the first part of the series, we showed that a spreading-vanishingdichotomy occurs for such free boundary problems (see [16]). In this secondpart of the series, we investigate the spreading speeds of such free boundaryproblems in the case that the spreading occurs. We first prove the existence ofa unique time almost periodic semi-wave solution associated to such a freeboundary problem. Using the semi-wave solution, we then prove that the freeboundary problem has a unique spreading speed.

Diffusive KPP Equations with Free Boundaries in Time Almost Periodic Environments: II. Spreading Speeds and Semi-Wave