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

The inverse fixed angle problem for operator $\Delta^2 u + V(x,|u|) u$ isconsidered in dimensions $n=2,3$. We prove that the difference between aninverse fixed angle Born approximation and the function $V(\cdot,1)$ issmoother than the function $V$ itself in some Sobolev scale. This allows us toconclude that the main singularities of the perturbation $V$ can bereconstructed from the knowledge of the scattering amplitude with some fixedincident angle.

Recovery of singularities from fixed angle scattering data for biharmonic operator in dimensions two and three