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Maximum likelihood estimation of log-affine models using detailed-balanced reaction networks. [PDF]
J Math BiolHenriksson O +3 more
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Absolutely closed semigroups. [PDF]
Rev R Acad Cienc Exactas Fis Nat A MatBanakh T, Bardyla S.
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A commutativity property for rings
Journal of Algebra and Its Applications, 2015We provide a partial answer to the following question: Assume that R is a finite ring of order s such that for every two subsets M and N of cardinalities m and n respectively, there exist x ∈ M and y ∈ N such that xy = yx. What relations among s, m, n guarantee that R is commutative?
H. E. Bell, Mohammad Zarrin
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Commutation Properties of Symmetric Operators [PDF]
Mathematische Nachrichten, 1995 AbstractThis 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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2010
In certain cases the filtering is in a sense trivial: the process decomposes into the observable and an independent process.
Xue-Mei Li +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.
Xue-Mei Li +2 more
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On the property of local commutativity
Functional Analysis and Its Applications, 1998zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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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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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 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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