ABSTRACT
In factories multioperation and multi-index systems are very common. A multioperation system is a system in which its product is processed by a production line consisting of two or more operations. A multi-index system is one in which at least one operation has two or more indices, such as a technical index and/or a quality index. For example, a printed circuit pro duction line consists of 17 operations, with at least two indices and at most 27. Again, for analgin (a kind of drug) a production line consists of six operations, with at least two and at most six indices. Such examples exist indeed everywhere.
