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

We define 2-decompositions of ribbon graphs, which generalise 2-sums andtensor products of graphs. We give formulae for the Bollobas-Riordan polynomialof such a 2-decomposition, and derive the classical Brylawski formula for theTutte polynomial of a tensor product as a (very) special case. This study wasinitially motivated from knot theory, and we include an application of ourformulae to mutation in knot diagrams.

Expansions for the Bollobas-Riordan polynomial of separable ribbon graphs