Recognition of Fusobacterium nucleatum subgroups Fn-1, Fn-2 and Fn-3 by ribosomal RNA gene restriction patterns
نویسندگان
چکیده
منابع مشابه
On the Multiplicative Order of Fn+1/fn modulo Fm
Here, we show that if s �∈ {1, 2, 4} is a fixed positive integer and m and n are coprime positive integers such that the multiplicative order of Fn+1/Fn modulo Fm is s, where Fk is the kth Fibonacci number, then m < 500s2.
متن کاملDISTORTION FOR ABELIAN SUBGROUPS OF Out(Fn)
We prove that abelian subgroups of the outer automorphism group of a free group are quasiisometrically embedded. Our proof uses recent developments in the theory of train track maps by FeighnHandel. As an application, we prove the rank conjecture for Out(Fn).
متن کاملCommensurations of Out(Fn)
Let Out(Fn) denote the outer automorphism group of the free group Fn with n > 3. We prove that for any finite index subgroup Γ < Out(Fn), the group Aut(Γ) is isomorphic to the normalizer of Γ in Out(Fn). We prove that Γ is co-Hopfian : every injective homomorphism Γ → Γ is surjective. Finally, we prove that the abstract commensurator Comm(Out(Fn)) is isomorphic to Out(Fn).
متن کاملA combinatorial interpretation of the recurrence fn+1 = 6fn - fn-1
Bonin et al. (1993) recalled an open problem related to the recurrence relation verified by NSW numbers. The recurrence relation is the following: fn+l = 6f~ f~l , with jq = 1 and j~ = 7, and no combinatorial interpretation seems to be known. In this note, we define a regular language .~ whose number of words having length n is equal to f~+l. Then, by using .La we give a direct combinatorial pr...
متن کاملWhen are centralizers of finite subgroups of Out(Fn) finite?
This paper gives necessary and sufficient conditions for the centralizer of a finite subgroup of outer automorphisms (resp. automorphisms) of a finitely generated free group to be finite. If G is realized by its action on a graph, Krstić’s work produces generators of the centralizer of G in terms of graph isomorphisms and certain graph transformations. This paper examines the behavior of these ...
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ژورنال
عنوان ژورنال: FEMS Microbiology Letters
سال: 1989
ISSN: 0378-1097
DOI: 10.1016/0378-1097(89)90363-7