5 Five families#
5.4 Symmetric and alternating groups#
5.4.4 Cayleyâs theorem#
The authorâs footnote regarding composition is a bit unfortunate. Itâs fine and good to choose this particular convention: itâs also the choice of GAP, Permutations - SymPy and Permutations · AbstractAlgebra.jl. However, these libraries donât necessarily use â (âring operatorâ in Unicode) for composition.
Per Function composition § Alternative notations, the more common notational preference is \(fâg\) for âg then fâ although it gives mention to the authorâs convention. Weâll prefer \(fâšg\) for âf then gâ when it doesnât conflict with the author.