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math.GN2007
A classification of CO spaces which are continuous images of compact ordered spaces
Robert Bonnet, Matatyahu Rubin
A compact Hausdorff space X is called a CO space, if every closed subset of X is homeomorphic to an open subset of X. Every successor ordinal with its order topology is a CO space.…
math.GN2007
Free Boolean algebras over unions of two well orderings
Robert Bonnet, Latifa Faouzi, Wiesław Kubiś
Given a partially ordered set there exists the most general Boolean algebra which contains as a generating set, called the {\it free Boolean algebra} over . We st…
math.GN2007★ 5 cited
Poset algebras over well quasi-ordered posets
Uri Abraham, Robert Bonnet, Wieslaw Kubis
A new class of partial order-types, class $\gbqo^+$ is defined and investigated here. A poset is in the class iff the free poset algebra is generated by a better…