Principle S_1 (P,R): ideals and functions

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985840%3A_____%2F19%3A00503731" target="_blank" >RIV/67985840:_____/19:00503731 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.topol.2019.02.060" target="_blank" >http://dx.doi.org/10.1016/j.topol.2019.02.060</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.topol.2019.02.060" target="_blank" >10.1016/j.topol.2019.02.060</a>

Result language
angličtina
Original language name
Principle S_1 (P,R): ideals and functions
Original language description
We investigate ideal versions of Scheepers' S 1 (...)-space, Arkhangel'skii's α 4 -space and Scheepers' monotonic sequence selection property, i.e., S 1 (...)-space, S 1 (... )-space and S 1 (...)-space, respectively. We show that cardinal invariant ... introduced in [42] is their common critical cardinality and we study this combinatorial characteristic in its own. For instance, we show that ... and consequently if cov ... and J has the Baire property then ... Moreover, we show that control sequence ... in the definition of (I,sJ)wQN-space in [6] is not essential.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10101 - Pure mathematics

Project
<a href="/en/project/GF17-33849L" target="_blank" >GF17-33849L: Filters, Ultrafilters and Connections with Forcing</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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