PS-closed bitopological spaces
Displaying 61 – 80 of 90
rc-continuous functions and functions with rc-strongly closed graph.
Al-Nashef, Bassam (2003)
International Journal of Mathematics and Mathematical Sciences
Real-valued functions on Alexandroff (zero-set) spaces
Anthony W. Hager (1975)
Commentationes Mathematicae Universitatis Carolinae
Recurrent functions and semigroups.
J.M. Day (1975)
Semigroup forum
Regarding a question about the least element map
K. E. Thomas (1973)
Colloquium Mathematicae
Relations between ß X / X and a Certain Subspace of ... X.
Jan van Mill (1977)
Mathematische Zeitschrift
Semi-precontinuous functions and properties of generalized semi-preclosed sets in topological spaces.
Navalagi, G.B. (2002)
International Journal of Mathematics and Mathematical Sciences
Some applications of tiny sequences
Szymański, Andrzej (1984)
Proceedings of the 11th Winter School on Abstract Analysis
Some Baire category type theorems for
Andrzej Szymański (1979)
Commentationes Mathematicae Universitatis Carolinae
Some characterizations of bitopological connectivity properties
M. Mršević (1986)
Matematički Vesnik
Special lattices of compactifications
Alessandro Caterino (1985)
Commentationes Mathematicae Universitatis Carolinae
Stone lattices: a topological approach
H. Priestley (1974)
Fundamenta Mathematicae
Strongly irresolvable spaces.
Rose, David, Sizemore, Kari, Thurston, Ben (2006)
International Journal of Mathematics and Mathematical Sciences
The fixed point set of open mappings on extremally disconnected spaces
Egbert Thümmel (1994)
Commentationes Mathematicae Universitatis Carolinae
We give an example of an extremally disconnected compact Hausdorff space with an open continuous selfmap such that the fixed point set is nonvoid and nowhere dense, respṫhat there is exactly one nonisolated fixed point.
The measure algebra does not always embed
Alan Dow, Klaas Hart (2000)
Fundamenta Mathematicae
The Open Colouring Axiom implies that the measure algebra cannot be embedded into P(ℕ)/fin. We also discuss errors in previous results on the embeddability of the measure algebra.
The regular open algebra of βRR is not equal to the completion of P(ω)/fin
Alan Dow (1998)
Fundamenta Mathematicae
Two compact spaces are co-absoluteif their respective regular open algebras are isomorphic (i.e. homeomorphic Gleason covers). We prove that it is consistent that βω and βℝ are not co-absolute.
There is no universal totally disconnected space
Roman Pol (1973)
Fundamenta Mathematicae
Totally disconnected compactifications.
Saworotnow, Parfeny P. (1993)
International Journal of Mathematics and Mathematical Sciences
Transformation groups with no equicontinuous minimal set
Jason Gait (1972)
Compositio Mathematica
Two results on special points
Alan Dow (2003)
Fundamenta Mathematicae
We show that there is a nowhere ccc σ-compact space which has a remote point. We show that it is consistent to have a non-compact σ-compact separable space X such that every point of the remainder is a limit of a countable discrete subset of non-isolated points of X. This example shows that one cannot prove in ZFC that every locally compact non-compact space has discrete weak P-points.