On the symmetry classes of the first covariant derivatives of tensor fields.
Fiedler, Bernd (2002)
Séminaire Lotharingien de Combinatoire [electronic only]
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Fiedler, Bernd (2002)
Séminaire Lotharingien de Combinatoire [electronic only]
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Gardner, B.J., Mason, Gordon (2006)
Beiträge zur Algebra und Geometrie
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Benjamin, E., Bresinsky, H. (2004)
Acta Mathematica Universitatis Comenianae. New Series
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Marinari, Maria Grazia, Ramella, Luciana (2006)
Beiträge zur Algebra und Geometrie
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Benhissi, Ali (2007)
Beiträge zur Algebra und Geometrie
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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....
Alain Lascoux, Bernard Leclerc, Jean-Yves Thibon (1996)
Banach Center Publications
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Classes dual to Schubert cycles constitute a basis on the cohomology ring of the flag manifold F, self-adjoint up to indexation with respect to the intersection form. Here, we study the bilinear form (X,Y) :=〈X·Y, c(F)〉 where X,Y are cocycles, c(F) is the total Chern class of F and〈,〉 is the intersection form. This form is related to a twisted action of the symmetric group of the cohomology ring, and to the degenerate affine Hecke algebra. We give a distinguished basis for this form,...
Winkel, Rudolf (1996)
Séminaire Lotharingien de Combinatoire [electronic only]
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Gogić, Ilja (2011)
Banach Journal of Mathematical Analysis [electronic only]
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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...
Mazurov, V. D. (2003)
Sibirskij Matematicheskij Zhurnal
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Aldea, Costel (2005)
Acta Universitatis Apulensis. Mathematics - Informatics
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Ballester-Bolinches, Adolfo, Calvo, Clara (2009)
Sibirskij Matematicheskij Zhurnal
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