Results 181 to 190 of about 69,892 (204)
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Semigroup Forum, 2009
A semigroup algebra \(kS\) admits a total ordering if and only if the field \(k\) is formally real and \(S\) is a cancellative orderable semigroup. The case of \(*\)-orderability of \(kS\) is much harder. The notion of a \(*\)-ordering has been extended from division rings to general noncommutative rings in a series of papers by \textit{M.
Klep, Igor, Moravec, Primož
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A semigroup algebra \(kS\) admits a total ordering if and only if the field \(k\) is formally real and \(S\) is a cancellative orderable semigroup. The case of \(*\)-orderability of \(kS\) is much harder. The notion of a \(*\)-ordering has been extended from division rings to general noncommutative rings in a series of papers by \textit{M.
Klep, Igor, Moravec, Primož
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On ordered $��$-semigroups ($��$-semigroups)
2014We add here some further characterizations to the characterizations of strongly regular ordered $ $-semigroups already considered in Hacettepe J. Math. 42 (2013), 559--567. Our results generalize the characterizations of strongly regular ordered semigroups given in the Theorem in Math. Japon.
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Semigroup C⁎-algebras and amenability of semigroups
Journal of Functional Analysis, 2012Xin Li
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The expansion of a semigroup and a Riesz basis criterion
Journal of Differential Equations, 2005Gen Qi Xu
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On the approximate controllability of fractional evolution equations with compact analytic semigroup
Journal of Computational and Applied Mathematics, 2014Nazim I Mahmudov
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Semigroup Actions of Expanding Maps
Journal of Statistical Physics, 2016Maria Carvalho +2 more
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Non-positivity of the semigroup generated by the Dirichlet-to-Neumann operator
Positivity, 2013Daniel Daners
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Semigroup identities in the monoid of two-by-two tropical matrices
Semigroup Forum, 2010Zur Izhakian, Stuart W Margolis
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