On sets of points of semicontinuity in fine topologies generated by an ideal

Bernd Kirchheim

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Displaying similar documents to “On sets of points of semicontinuity in fine topologies generated by an ideal”

On some ideal related to the ideal (v 0 )

Piotr Kalemba (2015)

Open Mathematics

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The ideal (v0) is known in the literature and is naturally linked to the structure [ω]ω. We consider some natural counterpart of the ideal (v0) related in an analogous way to the structure Dense(ℚ) and investigate its combinatorial properties. By the use of the notion of ideal type we prove that under CH this ideal is isomorphic to (v0).

Norms on possibilities. II: More ccc ideals on $2^{ω}$ .

Rosłanowski, Andrzej, Shelah, Saharon (1997)

Journal of Applied Analysis

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The divisor of the resultant.

Scheja, Günter, Storch, Uwe (1996)

Beiträge zur Algebra und Geometrie

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Properties of measure and category in generalized Cohen's and Silver's forcing

Miroslav Repický (1987)

Acta Universitatis Carolinae. Mathematica et Physica

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Positive Implicative Soju Ideals in BCK-Algebras

Xiao Long Xin, Rajab Ali Borzooei, Young Bae Jun (2019)

Bulletin of the Section of Logic

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The notion of positive implicative soju ideal in BCK-algebra is introduced, and several properties are investigated. Relations between soju ideal and positive implicative soju ideal are considered, and characterizations of positive implicative soju ideal are established. Finally, extension property for positive implicative soju ideal is constructed.

Tight closure of an ideal generated by an R-sequence.

Azzouz Cherrabi, Abderrahim Miri (1999)

Extracta Mathematicae

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Extending the ideal of nowhere dense subsets of rationals to a P-ideal

Rafał Filipów, Nikodem Mrożek, Ireneusz Recław, Piotr Szuca (2013)

Commentationes Mathematicae Universitatis Carolinae

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We show that the ideal of nowhere dense subsets of rationals cannot be extended to an analytic P-ideal, $F_{σ}$ ideal nor maximal P-ideal. We also consider a problem of extendability to a non-meager P-ideals (in particular, to maximal P-ideals).

Upper and lower limits with respect to the m-ideal

Wilczyński, Władysław, Wojdowski, Wojciech (2015-11-26T15:41:39Z)

Acta Universitatis Lodziensis. Folia Mathematica

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