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

This paper is devoted to the investigation of an important issue recentlybrought into attention by a recent paper of Arutyunov: the relation betweenopenness of composition of set-valued maps and fixed point results. Moreprecisely, we prove a general result concerning the openness of compositionsand then we show that this result covers and implies most of the known opennessresults. In particular, we reobtain several recent results in this field,including a fixed point theorem of Dontchev and Frankowska.

Filling the Gap between Metric Regularity and Fixed Points: The Linear Openness of Compositions