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Peter M. Higgins 《Algebra Universalis》1990,27(4):597-599
An algebraic proof is given which shows that any pseudovariety of finite algebras is determined by a set of pseudoidentities.Presented by Boris M. Schein. 相似文献
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Betty Jane Gassner 《Abhandlungen aus dem Mathematischen Seminar der Universit?t Hamburg》1961,25(1-2):10-22
A dissertation in the Department of Mathematics submitted to the Faculty of the Graduate School of Arts and Science in partial fulfillment of the requirements for the degree of Doctor of Philosophy at New York University. 相似文献
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Fred Richman 《代数通讯》2013,41(11):3913-3922
The theory of torsion-free abelian groups is developed, in a manner that is constructive in the sense of Bishop, up to the fundamental the orem that, for finite-rank completely decomposable torsion-free groups, the class of finite-rank pure subgroups is coextensive with the class of finite-rank torsion-free quotients. 相似文献
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I. V. Latkin 《Algebra and Logic》1996,35(3):172-175
Previously, N. Khisamiev proved that all {ie172-1} Abelian torsion-free groups are {ie172-2}. We prove that for the class
of nilpotent torsion-free groups, the situation is different: even the quotient group F of a {ie172-3} nilpotent group of
class 2 by its periodic part may fail to have a {ie172-4}.
Translated fromAlgebra i Logika, Vol. 35, No. 3, pp. 308–313, May–June, 1996. 相似文献
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Hiroaki Nakamura Naotake Takao 《Transactions of the American Mathematical Society》1998,350(3):1079-1102
In this paper, Grothendieck's anabelian conjecture on the pro- fundamental groups of configuration spaces of hyperbolic curves is reduced to the conjecture on those of single hyperbolic curves. This is done by estimating effectively the Galois equivariant automorphism group of the pro- braid group on the curve. The process of the proof involves the complete determination of the groups of graded automorphisms of the graded Lie algebras associated to the weight filtration of the braid groups on Riemann surfaces.
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P. A. Krylov 《Algebra and Logic》1990,29(5):362-370
Translated from Algebra i Logika, Vol. 29, No. 5, pp. 549–560, September–October, 1990. 相似文献