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

We give necessary and sufficient conditions for the left projectivity and biprojectivity of Banach algebras defined by locally trivial continuous fields of Banach algebras. We identify projective  C *-algebras  defined by locally trivial continuous fields ={Ω, ( A   t  )  t ∈Ω , Θ} such that each  C *-algebra  A   t   has a strictly positive element. For a commutative  C *-algebra   contained in ℬ( H ), where  H  is a separable Hilbert space, we show that the condition of left projectivity of   is equivalent to the existence of a strictly positive element in   and so to the spectrum of   being a Lindelöf space.

PROJECTIVITY OF BANACH AND C *-ALGEBRAS OF CONTINUOUS FIELDS