Page boy (wedding attendant) Page boy (wedding attendant) A page boy is a young male attendant at a wedding or cotillion, a social dance. This type of wedding attendant is less common than it used to be, but is still a way of including young relatives or the children of relatives and friends in a wedding. A page is often seen at British royal weddings. There may be many pages for effect at cotillions. Traditionally, page boys carry the bride's train, especially if the bride is wearing a dress with a long train. Because of the difficulty of managing the train, page boys are
Rank of an abelian group Rank of an abelian group In mathematics, the rank, Prüfer rank, or torsion-free rank of an abelian group "A" is the cardinality of a maximal linearly independent subset. The rank of "A" determines the size of the largest free abelian group contained in "A". If "A" is torsion-free then it embeds into a vector space over the rational numbers of dimension rank "A". For finitely generated abelian groups, rank is a strong invariant and every such group is determined up to isomorphism by its rank and torsion subgroup. Torsion-free abelian groups of rank 1 have been completely classified. However, the