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 Open

Presents the pdf analysis as premium feature

PDF Analysis

Insights

Presents the summarisation as premium feature

Summarisation

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

For classes of additively monotone matrices and incomplete anti-Monge matrices, we describe conditions which guarantee the attainment of the optimum of the functional of the quadratic assignment problem at a given permutation. The suggested conditions generalise and unify all special cases of the quadratic assignment problems with anti-Monge and Toeplitz matrices, including the well-known theorem on a permutation of three systems proved by G. H. Hardy, J. E. Littlewood, and G. Pólya in 1926, and all known extensions of this theorem.

Quadratic assignment problems with additively monotone matrices and incomplete anti-Monge matrices: conditions for effective solvability