Then, based on the fuzzy theory and method, a hybrid shop floor scheduling strategy was studied that combines fuzzy programming with fuzzy Contract Net Protocol.

A notion of grade field is presented and introduced into contract net to eliminate the disadvantages of the contract net model so as to solve the problems due to the collaboration among different service agents, thus minimizing the region to search collaborative service agents.

Fuzzy Homomorphism of Groups and Isomorphism Theorems of Fuzzy Quotient Groups;

Fuzzy homomorphism and fundamental theorem of fuzzy homomorphism;

The fuzzy mapping is given based on the concept of fuzzy equivalent,and fuzzy homomorphism of groups and characteristics in this mapping state are discussed.

It is first introduced that the concept of fuzzy congruence triple of a fuzzy congruence on a regular semigroup, and then showed that each fuzzy congruence on a regular semigroup is uniquely determined by its fuzzy congruence triple.

show that every fuzzy congruence on a regular semigroup saturates its fuzzy kernel, and obtain the necessity and sufficiency conditions that a fuzzy subset of a regular semigroup is the fuzzy kernel of some fuzzy congruence.

We introduce the concept of fuzzy congruence extensions for subsemigroups of a semigroup S, and give some homomorphic properties of fuzzy congruences extensions.