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MLQ
2010
226views more  MLQ 2010»
13 years 3 months ago
The Ultrafilter Closure in ZF
: It is well known that, in a topological space, the open sets can be characterized using filter convergence. In ZF (Zermelo-Fraenkel set theory without the Axiom of Choice), we c...
Gonçalo Gutierres
APPML
2008
92views more  APPML 2008»
13 years 4 months ago
Almost automorphic solutions to a class of semilinear fractional differential equations
We study almost automorphic (mild) solutions of the semilinear fractional equation t u = Au + -1 t f(
Claudio Cuevas, Carlos Lizama
ORDER
2002
90views more  ORDER 2002»
13 years 4 months ago
The Priestley Separation Axiom for Scattered Spaces
Let R be a quasi-order on a compact Hausdorff topological space X. We prove that if X is scattered, then R satisfies the Priestley separation axiom if and only if R is closed in th...
Guram Bezhanishvili, Ray Mines, Patrick J. Morandi
ACS
2005
13 years 4 months ago
Locally Compact Path Spaces
It is shown that the space X[0,1], of continuous maps [0, 1] X with the compact-open topology, is not locally compact for any space X having a nonconstant path of closed points. ...
Susan B. Niefield
JGO
2008
75views more  JGO 2008»
13 years 4 months ago
On the second conjugate of several convex functions in general normed vector spaces
When dealing with convex functions defined on a normed vector space X the biconjugate is usually considered with respect to the dual system (X, X ), that is, as a function defined...
Constantin Zalinescu
APAL
2006
85views more  APAL 2006»
13 years 4 months ago
Compact spaces, elementary submodels, and the countable chain condition
Given a space X, J in an elementary submodel M of H(), define XM to be X M with the topology generated by {U M : U J M}. It is established, using anti-large-cardinals assumptio...
Lúcia R. Junqueira, Paul Larson, Franklin D...
ICDM
2002
IEEE
111views Data Mining» more  ICDM 2002»
13 years 9 months ago
An Algebraic Approach to Data Mining: Some Examples
In this paper, we introduce an algebraic approach to the foundations of data mining. Our approach is based upon two algebras of functions de ned over a common state space X and a ...
Robert L. Grossman, Richard G. Larson