On the hereditary -Buchsbaum property for ideals and .
Benjamin, E., Bresinsky, H. (2004)
Acta Mathematica Universitatis Comenianae. New Series
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Benjamin, E., Bresinsky, H. (2004)
Acta Mathematica Universitatis Comenianae. New Series
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Benhissi, Ali (2007)
Beiträge zur Algebra und Geometrie
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Végh, A. (2005)
Beiträge zur Algebra und Geometrie
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Gogić, Ilja (2011)
Banach Journal of Mathematical Analysis [electronic only]
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Ton-That Tuong, Thai-Duong Tran (2003)
Journal of Lie Theory
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Kevin Hutchinson (1995)
Acta Arithmetica
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0. Introduction. Since ℤ is a principal ideal domain, every finitely generated torsion-free ℤ-module has a finite ℤ-basis; in particular, any fractional ideal in a number field has an "integral basis". However, if K is an arbitrary number field the ring of integers, A, of K is a Dedekind domain but not necessarily a principal ideal domain. If L/K is a finite extension of number fields, then the fractional ideals of L are finitely generated and torsion-free (or, equivalently, finitely...
Chirkov, I. V., Shevelin, M. A. (2002)
Sibirskij Matematicheskij Zhurnal
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F. Azarpanah, O. Karamzadeh, A. Rezai Aliabad (1999)
Fundamenta Mathematicae
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An ideal I in a commutative ring R is called a z°-ideal if I consists of zero divisors and for each a ∈ I the intersection of all minimal prime ideals containing a is contained in I. We characterize topological spaces X for which z-ideals and z°-ideals coincide in , or equivalently, the sum of any two ideals consisting entirely of zero divisors consists entirely of zero divisors. Basically disconnected spaces, extremally disconnected and P-spaces are characterized in terms of z°-ideals....
Karchevskii, A.L. (2005)
Sibirskie Ehlektronnye Matematicheskie Izvestiya [electronic only]
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Sharma, R.K., Srivastava, J.B., Khan, Manju (2007)
Acta Mathematica Academiae Paedagogicae Nyí regyháziensis. New Series [electronic only]
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Kiyasov, S.N. (2000)
Siberian Mathematical Journal
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Tetiana Korotka, Jean-Jacques Loiseau, Petr Zagalak (2012)
Kybernetika
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The problem of pole assignment by state feedback in the class of non-square linear systems is considered in the paper. It is shown that the problem is solvable under the assumption of weak regularizability, a newly introduced concept that can be viewed as a generalization of the regularizability of square systems. Necessary conditions of solvability for the problem of pole assignment are established. It is also shown that sufficient conditions can be derived in some special cases. Some...