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

The corrected triple sum expression of Ali\v{s}auskas (1987) for therecoupling (Racah) coefficients (6j-symbols) of the symmetric (most degenerate)representations of the orthogonal groups SO(n) (previously derived from thefourfold sum expression of Ali\v{s}auskas also related to result of Horme\ssand Junker 1999) is rearranged into three new different double sum expressions(related to the hypergeometric Kamp\'e de F\'eriet type series) and a newtriple sum expression with preferable summation condition. The Regge typesymmetry of special 6j-symbols of the orthogonal groups SO(n) in terms ofspecial Kamp\'e de F\'eriet $F_{1:3}^{1:4}$ series is revealed. The recouplingcoefficients for antisymmetric representations of symplectic group Sp(2n) arederived using their relation with the recoupling coefficients of the formalorthogonal group SO(-2n).Comment: 21 page, structure of paper is changed, some sentences and details of  formulas are corrected, several references are adde

6j-symbols for symmetric representations ofSO(n) as the double series