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 introduce the notions of meet, semi-prime, and prime weak closure operations. Using homomorphism of BCK-algebrasφ : X → Y    , we show that every epimorphic image of a non-zeromeet element is also non-zeromeet and, for mappingc  l Y  : I  ( Y )  → I  ( Y ), we define a mapc  l  Y  ←onI ( X )byA ↦  φ  − 1    ( φ   ( A )   c  l Y    )  .We prove that, if “    c  l Y” is a weak closure operation (respectively, semi-prime and meet) onI ( Y )    , then so is “    c  l  Y  ←” onI ( X )    . In addition, for mappingc  l X  : I  ( X )  → I  ( X ), we define a mapc  l  X  →onI ( Y )as follows:B ↦ φ (  φ  − 1( B )   c  l X    ) .We show that, if “    c  l X” is a weak closure operation (respectively, semi-prime and meet) onI ( X )    , then so is “    c  l  X  →” onI ( Y )    .

Homomorphic Image and Inverse Image of Weak Closure Operations on Ideals of BCK-Algebras