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 Tools annual

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 monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

Let $\mathbb{A}$ denote the Alexandroff-Urysohn double arrow space. We provethe following results: (a) $\mathbb{A}\times{}^\omega{2}$ is not countabledense homogeneous; (b) ${}^{\omega}{\mathbb{A}}$ is not countable densehomogeneous; (c) $\mathbb{A}$ has exactly $\mathfrak{c}$ types of countabledense subsets. These results answer questions by Arhangel'ski\u\i, Hru\v{s}\'akand van Mill.

Countable Dense Homogeneity and the Double Arrow Space