The local Gromov-Witten invariants of configurations of rational curves.
Karp, Dagan, Liu, Chiu-Chu Melissa, Mariño, Marcos (2006)
Geometry & Topology
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Karp, Dagan, Liu, Chiu-Chu Melissa, Mariño, Marcos (2006)
Geometry & Topology
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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,...
Leeb, Klaus, Pirillo, Giuseppe (1984)
Séminaire Lotharingien de Combinatoire [electronic only]
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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....
Garsia, Adriano, Haiman, Mark, Tesler, Glenn (1999)
Séminaire Lotharingien de Combinatoire [electronic only]
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Garsia, A.M., Wallach, N.R. (2003)
Séminaire Lotharingien de Combinatoire [electronic only]
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Winkel, Rudolf (1996)
Séminaire Lotharingien de Combinatoire [electronic only]
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Pinus, A.G. (2009)
Sibirskij Matematicheskij Zhurnal
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Takashi Fukuda, Hisao Taya (1995)
Acta Arithmetica
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1. Introduction. Let k be a totally real number field. Let p be a fixed prime number and ℤₚ the ring of all p-adic integers. We denote by λ=λₚ(k), μ=μₚ(k) and ν=νₚ(k) the Iwasawa invariants of the cyclotomic ℤₚ-extension of k for p (cf. [10]). Then Greenberg’s conjecture states that both λₚ(k) and μₚ(k) always vanish (cf. [8]). In other words, the order of the p-primary part of the ideal class group of kₙ remains bounded as n tends to infinity, where kₙ is the nth layer of . We know...
Hisao Taya (1996)
Acta Arithmetica
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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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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...
Wenpeng Zhang (1994)
Acta Arithmetica
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Vsevolod F. Lev, Pavel Y. Smeliansky (1995)
Acta Arithmetica
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What is the structure of a pair of finite integers sets A,B ⊂ ℤ with the small value of |A+B|? We answer this question for addition coefficient 3. The obtained theorem sharpens the corresponding results of G. Freiman.