Authors: Richard J. Mathar
The symmetry group of the 18-j(H) Wigner symbol is restructured by splitting two symmetry equations (Yutsis et al. 1962) into three generators. The symmetry groups of two 21-j Wigner symbols (Ponzano 1965) are complemented to form groups of order 8. This summarizes systematic evaluation of the automorphisms of the associated simple cubic graphs with McKay’s nauty program.
Comments: 8 Pages. Removed a duplicated figure in version 2.
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