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Some Properties of θ-Closure

Canadian Journal of Mathematics, 1981
The concept of θ-closure was introduced by Velicko to study H-closed spaces and to generalize Taimanov's extension theorem [11], [12]. More recently, this notion has been used by Dickman and Porter [1] to characterize those Hausdorff spaces in which the Fomin H-closed extension operator commutes with the projective cover (absolute) operator and [2] to ...
Espelie, M. Solveig, Joseph, James E.
openaire   +1 more source

Insertion operations: Closure properties

Bull. EATCS, 1993
The paper investigates closure properties of families of languages (in Chomsky hierarchy) under various variants of insertion operations as introduced by the author [On insertion and deletion operations in formal languages, PhD Thesis, Univ. of Turku, Dept. of Math., 1991].
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Conditional and Closure Properties

2001
The union theorem, introduced in section 8.2.3, is the main tool for the study of asynchronous compositions of programs. The major virtue of this theorem is that it provides a simple rule for deducing the co-properties and transient predicates of a system from those of its component boxes. The major shortcoming is that it does not provide a simple rule
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Closure properties of ordered languages

Bull. EATCS, 1996
Summary: In this note, we solve questions regarding closure properties of ordered languages. Especially, ordered languages from a full abstract family of recursive languages which is neither intersection- nor complementation-closed.
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Closure Properties

2005
Charles R. Johnson, Ronald L. Smith
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On a closure property of convolution equivalent class of distributions

Journal of Mathematical Analysis and Applications, 2020
Remigijus Leipus, Jonas Šiaulys
exaly  

Closure property of the NBUC class under formation of parallel systems

IEEE Transactions on Reliability, 2002
Franco Pellerey
exaly  

Classification of certain commutator ideals and the tensor product closure property

Integral Equations and Operator Theory, 1989
Gary Weiss, Weiss Gary
exaly  

Extension of the Form-Closure Property to Underactuated Hands

IEEE Transactions on Robotics, 2010
S Krut   +2 more
exaly  

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