- Turkish Journal of Mathematics
- Vol: 34 Issue: 4
- Order-isomorphism and a projection's diagram of C(X)
Order-isomorphism and a projection's diagram of C(X)
Authors : Ahmed S. Al-rawashdeh
Pages : 523-536
View : 8 | Download : 5
Publication Date : 9999-12-31
Article Type : Makaleler
Abstract :A mapping between projections of C*-algebras preserving the orthogonality, is called an orthoisomorphism. We define the order-isomorphism mapping on C*-algebras, and using Dye's result, we prove in the case of commutative unital C*-algebras that the concepts; order-isomorphism and the orthoisomorphism coincide. Also, we define the equipotence relation on the projections of C(X); indeed, new concepts of finiteness are introduced. The classes of projections are represented by constructing a special diagram, we study the relation between the diagram and the topological space X. We prove that an order-isomorphism, which preserves the equipotence of projections, induces a diagram-isomorphism; also if two diagrams are isomorphic, then the C*-algebras are isomorphic.Keywords : Commutative C*-algebras, projections order-isomorphism, infinite projections, clopen subsets