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 construct a polynomial of degree d in two variables whose  Hessian curve has (d-2)^2 connected components using Viro patchworking. Inparticular, this implies the existence of a smooth real algebraic surface ofdegree d in RP^3 whose parabolic curve is smooth and has d(d-2)^2 connectedcomponents.

On the number of connected components of the parabolic curve