1-2hit |
A necessary condition is given for a closed set of k-valued logical functions to be essentially minimal. It is stated in terms of the associated 1-variable function of a generator of the set concerned.
The concept of essential minimality for closed sets of multiple-valued logical functions is introduced and studied. Principal results include: (1) any essentially minimal closed set can be generated by a single function and (2) the number of essentially minimal closed sets is finite.