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

This paper deals with solving a class of three-by-three block saddle pointproblems. The systems are solved by preconditioning techniques. Based on aniterative method, we construct a block upper triangular preconditioner. Theconvergence of the presented method is studied in details. Finally, somenumerical experiments are given to demonstrate the superiority of the proposedpreconditioner over some existing ones.

A block triangular preconditioner for a class of three-by-three block saddle point problems