A family (X, B1), (X, B2), . . . , (X, Bq) of q STS(v)s is a λ-fold large set of STS(v) and denoted by LSTSλ(v) if eve......

An LPDTS(υ) is a collection of 3(υ - 2) disjoint pure directed triple systems on the same set of υ elements. It is sh......

Collecting silver artefacts has traditionally been a very popular hobby.Silver is addictive,therefore the number of pote......