نتایج جستجو برای: finitely generated ideal

تعداد نتایج: 391491  

2012
Lance D. Drager Jeffrey M. Lee Ken Richardson

A subbundle of variable dimension inside the tangent bundle of a smooth manifold is called a smooth distribution if it is the pointwise span of a family of smooth vector fields. We prove that all such distributions are finitely generated, meaning that the family may be taken to be a finite collection. Further, we show that the space of smooth sections of such distributions need not be finitely ...

1995
E. HRUSHOVSKI P. H. KROPHOLLER A. SHALEV

In this paper we study the set Γn of nth-powers in certain finitely generated groups Γ. We show that, if Γ is soluble or linear, and Γn contains a finite index subgroup, then Γ is nilpotent-by-finite. We also show that, if Γ is linear and Γn has finite index (i.e. Γ may be covered by finitely many translations of Γn), then Γ is soluble-by-finite. The proof applies invariant measures on amenable...

2008
Pere Ara Francesc Perera Friedrich Wehrung

A graph monoid is a commutative monoid for which there is a particularly simple presentation, given in terms of a quiver. Such monoids are known to satisfy various nonstable K-theoretical representability properties for either von Neumann regular rings or C*-algebras. We give a characterization of graph monoids within finitely generated antisymmetric refinement monoids. This characterization is...

Journal: :Proceedings of the American Mathematical Society 1954

Journal: :International Journal of Algebra and Computation 2009

Journal: :Mathematische Zeitschrift 2007

Journal: :Nagoya Mathematical Journal 1951

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