1. Something consisting of a set of elements. 2. Among which relationships are specified so that. 3. Deductions are possible from such relations to others or from the relations among the elements to the behavior or history of the system.
1. Something consisting of a set of elements. 2. Among which relationships are specified so that. 3. Deductions are possible from such relations to others or from the relations among the elements to the behavior or history of the system.