Results 11 to 20 of about 6,838,637 (208)

Homogeneous Borel Sets [PDF]

open access: yesProceedings of the American Mathematical Society, 1986
Topological characterizations of all zero-dimensional homogeneous absolute Borel sets are obtained; it turns out that there are ω 1 {\omega _1} such spaces. We use results from game theory—particularly, about Wadge classes.
openaire   +2 more sources

A dedekind finite borel set [PDF]

open access: yesArchive for Mathematical Logic, 2010
Latex2e: 21 pages Latest version at http://www.math.wisc.edu ...
openaire   +4 more sources

Borel sets with large squares [PDF]

open access: yes, 1998
For a cardinal mu we give a sufficient condition (*)_mu (involving ranks measuring existence of independent sets) for: [(**)_mu] if a Borel set B subseteq R x R contains a mu-square (i.e.
S. Shelah
semanticscholar   +1 more source

Random selection of Borel sets

open access: yes, 2013
A theory of random Borel sets is presented, based on dyadic resolutions of compact metric spaces. The conditional expectation of the intersection of two independent random Borel sets is investigated.
Bernd Günther
semanticscholar   +1 more source

On the sum of two Borel sets [PDF]

open access: yesProceedings of the American Mathematical Society, 1970
It is shown that the linear sum of two Borel subsets of the real line need not be Borel, even if one of them is compact and the other is \(G_\delta\). This result is extended to a fairly wide class of connected topological groups.
Erdős, Pál, Stone, A. H.
openaire   +2 more sources

On Borel sets belonging to every invariant ccc -ideal on 2^{ℕ}

open access: yes, 2012
. Let I ccc be the σ -ideal of subsets of the Cantor group 2 N generated by Borel sets which belong to every translation-invariant σ -ideal on 2 N satisfying the countable chain condition (ccc). We prove that I ccc strongly vio- lates ccc.
P. Zakrzewski
semanticscholar   +1 more source

Borel structures on the set of Borel mappings

open access: yesTopology and its Applications, 2012
In the paper [Pac. J. Math. 1, 5--31 (1951; Zbl 0044.11801)], \textit{R. Arens} and \textit{J. Dugundji} introduced and studied several types of topologies on the spaces of continuous functions such as admissible, proper and splitting topologies. In the paper under review, the authors study analogously Borel splitting and admissible structures on the ...
Georgiou, Dimitris   +2 more
openaire   +1 more source

Events of Borel Sets, Construction of Borel Sets and Random Variables for Stochastic Finance [PDF]

open access: yesFormalized Mathematics, 2014
Summary We consider special events of Borel sets with the aim to prove, that the set of the irrational numbers is an event of the Borel sets. The set of the natural numbers, the set of the integer numbers and the set of the rational numbers are countable, so we can use the literature [10] (pp.
openaire   +4 more sources

Partial identification with categorical data and nonignorable missing outcomes

open access: yesCanadian Journal of Statistics, EarlyView.
Abstract Nonignorable missing outcomes are common in real‐world datasets and often require strong parametric assumptions to achieve identification. These assumptions can be implausible or untestable, and so we may wish to forgo them in favour of partially identified models that narrow the set of a priori possible values to an identification region.
Daniel Daly‐Grafstein, Paul Gustafson
wiley   +1 more source

Bayesian inverse ensemble forecasting for COVID‐19

open access: yesCanadian Journal of Statistics, EarlyView.
Abstract Variations in strains of COVID‐19 have a significant impact on the rate of surges and on the accuracy of forecasts of the epidemic dynamics. The primary goal for this article is to quantify the effects of varying strains of COVID‐19 on ensemble forecasts of individual “surges.” By modelling the disease dynamics with an SIR model, we solve the ...
Kimberly Kroetch, Don Estep
wiley   +1 more source

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