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
Minimum rank of a graph Minimum rank of a graph In mathematics, the minimum rank is a graph parameter formula_1 for any graph "G". It was motivated by the Colin de Verdière's invariant. The adjacency matrix of a given undirected graph is a symmetric matrix whose rows and columns both correspond to the vertices of the graph. Its coefficients are all 0 or 1, and the coefficient in row "i" and column "j" is nonzero whenever vertex "i" is adjacent to vertex "j" in the graph. More generally, one can define a "generalized adjacency matrix" to be any matrix of real numbers with the same