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

Let Sn be the symmetric group of all permutations of n letters. We show that there are exactly 3441 distinct Wilf classes for the permutations avoiding five patterns of length 4. Moreover, for each T ⊂ S4 with #T = 5, we determine the generating function for the number of permutations in Sn(T ), the set of all permutations of length n that avoid each pattern in T .

Enumeration and Wilf-classification of permutations avoiding five patterns of length 4