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

A commutative associative algebra A with an identity over the field of realnumbers which has a basis, where all elements are invertible, is considered inthe work. Moreover, among matrixes consisting of the structure constants of A,there is at least one that is non-degenerate. The notion of linearly convexdomains in the multi-dimensional complex space and some of their properties aregeneralized to the space that is the Cartesian product of n algebras A. Namely,the separate necessary and sufficient conditions of the local A-linearconvexity of domains with smooth boundary in the space are obtained in terms ofnonnegativity and positivity of formal quadratic differential form in A,respectively.

On local linear convexity generalized to commutative algebras