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 consider the reaction diffusion problem and present efficient ways todiscretize and precondition in the singular perturbed case when the reactionterm dominates the equation. Using the concepts of optimal test norm and saddlepoint reformulation, we provide efficient discretization processes for uniformand non-uniform meshes. We present a preconditioning strategy that works for alarge range of the perturbation parameter. Numerical examples to illustrate theefficiency of the method are included for a problem on the unit square.

Efficient discretization and preconditioning of the singularly perturbed Reaction Diffusion problem