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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

A least-square method is described for obtaining the solutions      A A       and      B B       for the matrix equations      Y 2 −  Y D + S = 0 {Y^2} - YD + S = 0       and      Y 2 −  D Y + S = 0 {Y^2} - DY + S = 0       respectively. No limitation is set on      A A      ,      B B      ,      D D      , and      S S       except that they be square matrices. An illustrated example, including computing procedures, is discussed. The mathematical solutions presented should prove useful for solving the eigenvalue problem      ( λ  2 I + λ  D + S ) X = 0 \left ( {{\lambda ^2}I + \lambda D + S} \right )X = 0      , especially when the dimension of the matrices is large.

Solution of quadratic matrix equations by least-squares method