Distributivity of the algebra of regular open subsets of .beta. R / R
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985840%3A_____%2F05%3A00026231" target="_blank" >RIV/67985840:_____/05:00026231 - isvavai.cz</a>
Result on the web
—
DOI - Digital Object Identifier
—
Alternative languages
Result language
angličtina
Original language name
Distributivity of the algebra of regular open subsets of .beta. R / R
Original language description
We compare the structure of the algebras P(.omega.)/fin and A.omega./Fin, where A denotes the algebra of clopen subsets of the Cantor set. We show that the distributivity number of the algebra A.omega./Fin is bounded by the distributivity number of the algebra P(.omega.)/fin and by the additivity of the meager ideal on the reals. As a corollary we obtain a result of A. Dow, who showed that in the iterated Mathias model the space .beta..omega./.omega. and .beta.R/R are not co-absolute. We also show thatunder the assumption t=h the spaces .beta..omega./.omega. and .beta.R/R are co-absolute, improving on a result of E. van Douwen.
Czech name
Distributivita algebry regulárních otevřených podmnožin .beta. R / R
Czech description
Algebra regulárních otevřených podmnožin přírůstku Čech-Stoneovy kompaktifikace reálných čísel je píplnění algebry A.omega./fin, kde A značí algebru obojetných množin Cantorova diskontua. Je dokázáno, že distributivita této algebry je nejvýše rovna min.(h, add M), kde v add M značí additivita ideálu řídkých podmnožin reálných čísel.
Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BA - General mathematics
OECD FORD branch
—
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2005
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Topology and its Applications
ISSN
0166-8641
e-ISSN
—
Volume of the periodical
149
Issue of the periodical within the volume
1
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
7
Pages from-to
1-7
UT code for WoS article
—
EID of the result in the Scopus database
—