Results 171 to 180 of about 1,767 (212)
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Journal of the Australian Mathematical Society, 2013
AbstractWe characterize the abelian groups$G$for which the functors$\mathrm{Ext} (G, - )$or$\mathrm{Ext} (- , G)$commute with or invert certain direct sums or direct products.
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AbstractWe characterize the abelian groups$G$for which the functors$\mathrm{Ext} (G, - )$or$\mathrm{Ext} (- , G)$commute with or invert certain direct sums or direct products.
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2010
In certain cases the filtering is in a sense trivial: the process decomposes into the observable and an independent process.
K. David Elworthy +2 more
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In certain cases the filtering is in a sense trivial: the process decomposes into the observable and an independent process.
K. David Elworthy +2 more
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Commutation Properties of Symmetric Operators
Mathematische Nachrichten, 1995AbstractThis relationship between the weak and strong bounded commutants of a symmetric operator S and the commutant of a generalized spectral family (in Naimark's sense) of S is studied. A characterization of the existence of self‐adjoint extensions of S via von Neumann subalgebras of the weak commutant is also given.
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Properties of ``Quadratic'' Canonical Commutation Relation Representations
Journal of Mathematical Physics, 1969A class of representations of the canonical commutation relations is studied, each of which is characterized by an expectation functional that is the exponential of a Euclidean-invariant quadratic form of the test functions. The underlying field operators are realized as the direct product of two Fock representations and the consequences of this ...
Klauder, John R., Streit, Ludwig
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A Near-Commutativity Property for Rings
Results in Mathematics, 2002In the paper under review, a ring \(R\) is called a \(B_2\)-ring if for each 2-subset \(A\) of \(R\), \(| A^2|\leq 3\) -- that is, for each pair \(a,b\) of distinct elements of \(R\), the set \(\{a^2,b^2,ab,ba\}\) has at most 3 elements. Clearly, every commutative ring is a \(B_2\)-ring; and it is proved in [\textit{H. E. Bell} and \textit{A. A. Klein},
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Some properties of commuting and anti-commuting m-involutions
Acta Mathematica Scientia, 2012Abstract We define an m-involution to be a matrix K ∈ ℂ n × n for which Km = I. In this article, we investigate the class Sm (A) of m-involutions that commute with a diagonalizable matrix A ∈ ℂ n × n .
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Some properties of commutation in free partially commutative monoids
Information Processing Letters, 1985Let A be a finite alphabet, denote by \(\theta\) the commutation relation on A and let \(A^*\) be the free monoid over A. For any \(u,v\in A^*\) let \(u=v| \theta |\) iff there exist \(u_ 1,...,u_ n\in A^*\) such that \(u_ 1=u\), \(u_ n=v\) and for all \(i=1,...,n-1\), \(u_ i=g_ iabd_ i\) and \(u_{i+1}=g_ ibad_ i\) with (a,b)\(\in \theta\) holds.
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Some factorization properties in commutative rings
2005Let \(R\) be a commutative ring with \(1\). A series of three papers has developed a theory of factorization in rings with zero divisors: \textit{D. D. Anderson} and \textit{S. Valdes-Leon}, ``Factorization in commutative rings with zero divisors'', Rocky Mt. J. Math. 26, 439--480 (1996; Zbl 0865.13001); part II, Lect. Notes Pure Appl. Math.
ALAN, MURAT, AĞARGÜN, AHMET GÖKSEL
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SUGENO INTEGRAL AND THE COMONOTONE COMMUTING PROPERTY
International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems, 2009Comonotone maxitivity and minitivity of Sugeno integral can be seen as commuting of the Sugeno integral and max, resp. min operator for comonotone functions. In the paper, we look for the other operators commuting with the Sugeno integral when comonotone functions are considered.
Ouyang, Yao, Mesiar, Radko
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Property (k) and commuting Riesz-type perturbations
Rendiconti del Circolo Matematico di Palermo Series 2, 2017zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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