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

A weak $c$-colouring of a balanced incomplete block design (BIBD) is acolouring of the points of the design with $c$ colours in such a way that noblock of the design has all of its vertices receive the same colour. A BIBD issaid to be weakly $c$-chromatic if $c$ is the smallest number of colours withwhich the design can be weakly coloured. In this paper we show that for all $c\geq 2$ and $k \geq 3$ with $(c,k) \neq (2,3)$, the obvious necessaryconditions for the existence of a $(v,k,\lambda)$-BIBD are asymptoticallysufficient for the existence of a weakly $c$-chromatic $(v,k,\lambda)$-BIBD.

On balanced incomplete block designs with specified weak chromatic number