The free group of rank 2 is a limit of Thompson’s group F
نویسندگان
چکیده
منابع مشابه
The Free Group of Rank 2 Is a Limit of Thompson’s Group F
From [9], an n-marked group is a pair (G,S) where S is an ordered n-tuple of generators (the n-marking) of the group G. An isomorphism of marked groups must preserve the markings. With Gn the set of all isomorphism classes of n-marked groups, one says that two elements of Gn are no more than e −R apart if they have satisfy the same relations of length no longer than R. This gives a metric on Gn...
متن کاملfaculty of psychology and social sciences group of anthropology master thesis in major of anthropology
چکیده پایان نامه (شامل خلاصه، اهداف، روش های اجرا و نتایج به دست آمده): کار جمع آوری گو یش های محلی در سال های اخیر شتاب امیدوار کننده ای به خود گرفته است. شاید از بارزترین اهداف جمع آوری گویش های مختلف، ثبت و ضبط آن، جلوگیری از نابودی و مهمتر از همه حل مشکلات دستوری زبان رسمی باشد. دقت در فرآیند های زبانی گویش های محلی نوع ارتباط مردم نواحی مختلف با پیرامون نشان را به ما نشان خواهد داد. از س...
Some quadratic equations in the free group of rank 2
For a given quadratic equation with any number of unknowns in any free group F , with right-hand side an arbitrary element of F , an algorithm for solving the problem of the existence of a solution was given by Culler [8] using a surface method and generalizing a result of Wicks [46]. Based on different techniques, the problem has been studied by the authors [11; 12] for parametric families of ...
متن کاملThe automorphism group of a free-by-cyclic group in rank 2
Let φ be an automorphism of a free group Fn of rank n, and let Mφ = Fn oφ Z be the corresponding mapping torus of φ. We study the group Out(Mφ) under certain technical conditions on φ. Moreover, in the case of rank 2, we classify the cases when this group is finite or virtually cyclic, depending on the conjugacy class of the image of φ in GL2(Z). As an application, we solve the isomorphism prob...
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We study model-theoretic and stability-theoretic properties of the nonabelian free group in the light of Sela’s recent result [15] on stability and results announced by Bestvina and Feighn on “negligible subsets” of free groups. We point out analogies between the free group and socalled bad groups of finite Morley rank, and prove “non CM -triviality”
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ژورنال
عنوان ژورنال: Groups, Geometry, and Dynamics
سال: 2010
ISSN: 1661-7207
DOI: 10.4171/ggd/90