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 knot concordance invariant Upsilon, recently defined by Ozsvath,Stipsicz, and Szabo, takes values in the group of piecewise linear functions onthe closed interval [0,2]. This paper presents a description of one approach todefining Upsilon and of proving its basic properties related to the knot3-genus, 4-genus, and concordance genus.

Notes on the knot concordance invariant Upsilon