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 various functorial maps (projections) from virtual knots toclassical knots. These maps are defined on diagrams of virtual knots; in termsof Gauss diagram each of them can be represented as a deletion of some chords.The construction relies upon the notion of parity. As corollaries, we provethat the minimal classical crossing number for classical knots.

A Functorial Map from Virtual Knots to Classical Knots and Generalisations of Parity