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71.
Let F:Cn Cn be a holomorphic map, Fk be the kth iterate ofF, and p Cn be a periodic point of F of period k. That is,Fk(p) = p, but for any positive integer j with j < k, Fj(p) p. If p is hyperbolic, namely if DFk(p) has no eigenvalue ofmodulus 1, then it is well known that the dynamical behaviourof F is stable near the periodic orbit = {p, F(p),..., Fk1(p)}.But if is not hyperbolic, the dynamical behaviour of F near may be very complicated and unstable. In this case, a veryinteresting bifurcational phenomenon may occur even though may be the only periodic orbit in some neighbourhood of : forgiven M N\{1}, there may exist a Cr-arc {Ft: t [0,1]} (wherer N or r = ) in the space H(Cn) of holomorphic maps from Cninto Cn, such that F0 = F and, for t (0,1], Ft has an Mk-periodicorbit t with as t 0. Theperiod thus increases by a factor M under a Cr-small perturbation!If such an Ft does exist, then , as well as p, is said to beM-tupling bifurcational. This definition is independent of r. For the above F, there may exist a Cr-arc in H(Cn), with t [0,1], such that and, for t (0,1], has two distinct k-periodic orbits t,1 and t,2 with d(t,i, ) 0 as t 0 for i = 1,2. If such an does exist, then , as well as p, is said to be 1-tupling bifurcational. In recent decades, there have been many papers and remarkableresults which deal with period doubling bifurcations of periodicorbits of parametrized maps. L. Block and D. Hart pointed outthat period M-tupling bifurcations cannot occur for M >2 in the 1-dimensional case. There are examples showing thatfor any M N, period M-tupling bifurcations can occur in higher-dimensionalcases. An M-tupling bifurcational periodic orbit as defined here actsas a critical orbit which leads to period M-tupling bifurcationsin some parametrized maps. The main result of this paper isthe following. Theorem. Let k N and M N, and let F: C2 C2 be a holomorphicmap with k-periodic point p. Then p is M-tupling bifurcationalif and only if DFk(p) has a non-zero periodic point of periodM. 1991 Mathematics Subject Classification: 32H50, 58F14. 相似文献
72.
Zhen-han Tu 《Proceedings of the American Mathematical Society》1999,127(4):1039-1049
By applying the heuristic principle in several complex variables obtained by Aladro and Krantz, we shall prove some normality criteria for families of holomorphic mappings of several complex variables into , the complex N-dimensional projective space, related to Green's and Nochka's Picard type theorems. The equivalence of normality to being uniformly Montel at a point will be obtained. Some examples will be given to complement our theory in this paper.
73.
D. S. Telyakovskii 《Mathematical Notes》1996,60(6):681-687
Functions of one complex variable that satisfy a weakened asymptotic monogeny condition are proved to be holomorphic.
Translated fromMatematicheskie Zametki, Vol. 60, No. 6, pp. 902–911, December, 1996.
The author thanks Proffessor Dolzhenko for discussing the results of the paper.
The research was supported by the Russian Foundation for Basic Research under grant No. 93-01-00236. 相似文献
74.
Several aspects of localized defects in the Frenkel-Kontorova, classicalXY chain and analogous models with a finite range of interactions are discussed from a general point of view. Precise definitions are given for defect phase shifts (charges) and for creation, pinning, and interaction energies. Corresponding definitions are also provided for interfaces (localized regions separating two phases). For the nearest-neighbor Frenkel-Kontorova model, the various defect energies are related to areas enclosed by contours joining heteroclinic points of the area-preserving map generated by the conditions of mechanical equilibrium. 相似文献
75.
E. G. Anisova 《Mathematical Notes》1997,62(5):549-556
In this paper we study the automorphisms of nondegenerate quadrics of type (4, 3). In particular, we classify the so-called
null-quadrics (we prove that there are exactly two null-quadrics up to equivalence), and find their automorphism groups.
Translated fromMatematicheskie Zametki, Vol. 62, No. 5, pp. 657–665, November, 1997.
Translated by S. S. Anisov 相似文献
76.
The dynamics of bistable oscillators driven by periodic dichotomous noise is described. The stochastic differential equation governing the flow implies smooth trajectories between noise switching events. The dynamics of the two-branched map induced by this flow is a Markov process. Harmonic and quartic models of the bistable potential are studied in the overdamped limit. In the linear (harmonic) case the dynamics can be reduced to a stochastic one-dimensional map with two branches. The moments decay exponentially in this case, although the invariant measure may be multifractal. For strong damping, relaxation induces a cascade leading to a Cantor set and anomalous decay of the density in this case is modeled by a Markov chain. For the physically more realistic case of a quartic potential many additional features arise since the contraction factor is distance dependent. By tuning the barrier-height parameter in the quartic potential, noise-induced transition rates with the characteristics of intermittency are found. 相似文献
77.
Manuel Valdivia 《Mathematische Nachrichten》1996,181(1):277-287
Let X be a Banach space. Let Hw*(X*) the Fréchet space whose elements are the holomorphic functions defined on X* whose restrictions to each multiple mB(X*), m = 1,2, …, of the closed unit ball B(X*) of X* are continuous for the weak-star topology. A fundamental system of norms for this space is the supremum of the absolute value of each element of Hw*(X*) in mB(X*), m = 1,2,…. In this paper we construct the bidual of l1 when this space contains no copy of l1. We also show that if X is an Asplund space, then Hw*(X*) can be represented as the projective limit of a sequence of Banach spaces that are Asplund. 相似文献
78.
CompletelyPositiveDefiniteMapsOverTopological-algebrasXuTianzhou(DepartmentofAppliedMathematics,BeijingInstituteofTechnofogy,... 相似文献
79.
80.
We study generalized equations of the following form: (render) where f is Fréchet differentiable in a neighborhood of a solution x* of (*) and g is Fréchet differentiable at x* and where F is a set-valued map acting in Banach spaces. We prove the existence of a sequence (xk) satisfying which is super-linearly convergent to a solution of (*). We also present other versions of this iterative procedure that have superlinear and quadratic convergence, respectively. 相似文献
0f(x)+g(x)+F(x),