Christian S. Calude, Gheorghe Paun, Grzegorz Rozenberg, Arto Salomaa
The multiset, as a set with multiplicities associated with its elements in the form of natural numbers, is a notation which has appeared again and again in various areas of mathematics and computer science. As a data structure, multisets stand in-between strings/lists, where a linear ordering of symbols/items is present, and sets, where no ordering and no multiplicity is considered.
The multiset, as a set with multiplicities associated with its elements in the form of natural numbers, is a notation which has appeared again and aga...
