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 show that the Smith normal form of a skew-symmetric D-optimal design oforder $n\equiv 2\pmod{4}$ is determined by its order. Furthermore, we show thatthe Smith normal form of such a design can be written explicitly in terms ofthe order $n$, thereby proving a recent conjecture of Armario. We apply ourresult to show that certain D-optimal designs of order $n\equiv 2\pmod{4}$ arenot equivalent to any skew-symmetric D-optimal design. We also provide acorrection to a result in the literature on the Smith normal form of D-optimaldesigns.

On the Smith normal form of a skew-symmetric D-optimal design of order $n\equiv 2\pmod{4}$