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 deal with group divisible designs that have block size 4 and group typeg^u m^1, where g = 2 or 4 (mod 6). We show that the necessary conditions forthe existence of a 4-GDD of type g^u m^1 are sufficient when g = 14, 20, 22,26, 28, 32, 34, 38, 40, 44, 46, 50, 52, 58, 62, 68, 76, 88, 92, 100, 104, 116,124, 136, 152, 160, 176, 184, 200, 208, 224, 232, 248, 272, 304, 320, 368, 400,448, 464 and 496. Using these results we go on to show that the necessaryconditions are sufficient for g = 2^t q^s, q = 19, 23, 25, 29, 31, s, t = 1, 2,..., as well as for g = 2^t q, q = 2, 5, 7, 11, 13, 17, t = 1, 2, ..., withpossible exceptions 56^9 m^1, 80^9 m^1 and 112^9 m^1 for a few large values ofm.

Group divisible designs with block size four and type g^u m^1 - III