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    Vietoris hyperspaces over scattered Priestley spaces

    We study Vietoris hyperspaces of closed and final sets of Priestley spaces. We are particularly interested in Skula topologies. A topological space is Skula if its topology is generated by differences of open ...

    Taras Banakh, Robert Bonnet, Wiesław Kubiś in Israel Journal of Mathematics (2022)

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    Chains of well-generated Boolean algebras whose union is not well-generated

    A Boolean algebraB that has a well-founded sublattice which generatesB is called awell-generated Boolean algebra. Every well-generated Boolean algebra is superatomic. However, there are superatomic algebras which...

    Robert Bonnet, Matatyahu Rubin in Israel Journal of Mathematics (2006)

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    On a poset algebra which is hereditarily but not canonically well generated

    LetB be a superatomic Boolean algebra.B is well generated, if it has a well founded sublatticeL such thatL generatesB. The free product of Boolean algebrasB andC is denoted byB *C. IfC is a chain thenB(C) denotes...

    Matatyahu Rubin, Robert Bonnet in Israel Journal of Mathematics (2003)

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    Article

    On a superatomic Boolean algebra which is not generated by a well-founded sublattice

    Let b denote the unboundedness number of ωω. That is, b is the smallest cardinality of a subset \(F \subseteq \omega ^\omega \) ...

    Uri Abraham, Matatyahu Rubin, Robert Bonnet in Israel Journal of Mathematics (2001)

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    Article

    On HCO spaces. An uncountable compactT 2 space, different from ℵ1+1, which is homeomorphic to each of its uncountable closed subspaces, which is homeomorphic to each of its uncountable closed subspaces

    LetX be an Hausdorff space. We say thatX is a CO space, ifX is compact and every closed subspace ofX is homeomorphic to a clopen subspace ofX, andX is a hereditarily CO space (HCO space), if every closed subspace...

    Robert Bonnet, Saharon Shelah in Israel Journal of Mathematics (1993)