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.
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Ny grønlandsk strategi skal mindske verdens højeste selvmordsrate. Den nye strategi har særligt fokus på forebyggelse af selvmord blandt unge. Opvækst i familier med alkohol og seksuelle overgreb gør grønlandske unge særligt udsatte. Antallet af selvmord i Grønland er målt i forhold til indbyggertallet verdens højeste. I 2010 blev der begået 62 selvmord på Grønland – hvilket giver landet en sel...
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 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 کاملADDENDA TO "PYTHAGOREAN TRIPLES CONTAINING FIBONACCI NUMBERS: SOLUTIONS FOR Fn
then the Fibonacci numbers are given by Fn = Fn (1), and the Pell numbers are Pn = Fn(2). Cohn [4] has proved that the only perfect squares among the sequences {Fn(a)}9 a odd, are 0 and 1, and whenever a = k, a itself. Certain cases are known for a even [5]. The cited results of Cohn and Ljunggren mean that Conjectures 2.3,3.2, and 4.2 of [3] are true, and that the earlier results can be streng...
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ژورنال
عنوان ژورنال: Udenrigs
سال: 2015
ISSN: 2597-0747,1395-3818
DOI: 10.7146/udenrigs.v0i2.118362