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

At a crossroads of calculus and combinatorics, the generating function ofsecant and tangent numbers (Euler numbers) provides enumeration of alternatingpermutations. In this article, we present a new refinement of Euler numbers toanswer the combinatorial question on some particular relation of Euler numbersproved by Heneghan-Petersen, Power series for up-down min-max permutations,College Math. Journal, Vol. 45, No. 2 (2014), 83-91.

A new refinement of Euler numbers on counting alternating permutations