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/

Zendy Plus

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

Zendy Tools

Zendy Open

It is known that S^4 is a union of two fishtails, and S^2 x S^2 is a union oftwo cusps (glued along their boundaries). Here we prove that, for any choice ofknots K,L in S^3, performing knot surgery operations to S^4 and S^2 x S^2,along both of the fishtails and cusps, respectively, do not change thediffeomorphism type of these manifolds.

Double knot surgeries to S^4 and S^2 x S^2