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 conjecture of Manin predicts the distribution of rational points on Fanovarieties. We provide a framework for proofs of Manin's conjecture for delPezzo surfaces over imaginary quadratic fields, using universal torsors. Someof our tools are formulated over arbitrary number fields.  As an application, we prove Manin's conjecture over imaginary quadraticfields K for the quartic del Pezzo surface S of singularity type A_3 with fivelines given in P^4 by the equations vw - xy = vy + wy + xz = 0.

Counting imaginary quadratic points via universal torsors