Phylogenetic evidence indicates the important mycotoxigenic strains Fn-2, Fn-3, Fn-2B and Fn-M represent a new species of Fusarium
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 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 کاملOn Isomorphism Theorems of Fn -Polygroups
In this paper, the notion of fuzzy n-polygroups (Fn -polygroups) is introduced and some related properties are investigated. In this regards, the concepts of normal F-subpolygroups and homomorphisms of Fn-polygroups are adopted. Also, the quotient of Fn-polygroups by defining regular relations are studied. Finally, the classical isomorphism theorems of groups are generalized to Fn-polygroups p...
متن کاملOut(Fn) AND THE SPECTRAL GAP CONJECTURE
For n > 2, given φ1, . . . , φn randomly chosen isometries of S, it is well-known that the group Γ generated by φ1, . . . , φn acts ergodically on S. It is conjectured in [GJS] that for almost every choice of φ1, . . . , φn this action is strongly ergodic. This is equivalent to the spectrum of φ1 +φ1 −1 + · · ·+φn +φ n as an operator on L(S) having a spectral gap, i.e. all eigenvalues but the l...
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ژورنال
عنوان ژورنال: Mycotoxins
سال: 1997
ISSN: 0285-1466,1881-0128
DOI: 10.2520/myco1975.1997.45_1