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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Recently, some results on best approximation theory in linear 2-normed spaces have been obtained by Y. J. Cho, S. Elumalai, S. S. Kim, Sh. Rezapour and others (see [2], [4], [6], [11], [1], [13]). These papers are based on the research works in normed linear spaces made by I. Singer ([12]), S. S. Dragomir ([3]), and others. The concept which is closely related to 2-normed linear space is 2-inner product space that introduced by Diminnie, Gahler and White in 1973

ON THE BEST APPROXIMATION FOR A 2-HYPERPLANE IN 2-INNER PRODUCT SPACES