Formula: d1,3(2)d2,3(2)+d2,3(2)d3,3(2)+d3,3(2)d1,3(2)=d1,3(4)d2,3(4)+d2,3(4)d3,3(4)+d3,3(4)d1,3(4)=κ(κ+2).
Name: DLMF:22.9.E10
Description:
https://mardi.schubotz.org/wiki/Special:EntityPage/Q7695