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In 1990, Gambaudo introduced the notion of linking of two invariant sets of a surface self-map. Most of the known results of linked periodic orbits are about an orbit linked with a fixed point. In thi...
Abstract: The problem of a disc and a ball rolling on a horizontal plane without slipping is considered. Differential constrained equations are shown to be integrated when the trajectory of the point ...
Another extension of the disc algebra      Disc Algebra  Mergelyan’s Theorem  Polynomial Approximation       font style='font-size:12px;'> 2011/2/22
We identify the complex plane C with the open unit disc D = {z ∈ C : |z| < 1}by the homeomorphism C ∋ z 7→ z 1+|z| ∈ D.
e study the two-dimensional Gross-Pitaevskii theory of a rotating Bose gas in a disc-shaped trap with Dirichlet boundary conditions, generalizing and extending previous results that were obtained unde...
We identify all uniform limits of polynomials on the closed unit disc D with respect to the chordal metric  on C ∪ {∞}. One such limit is f ≡ ∞. The other limits are holomorphic functions f : D → C s...
Let Ap denote the class of functions of the form f(z) = zp+ap+1zp+1+ap+2zp+2+ ··· which are regular and p-valent in the open unit disc D = {z : |z| < 1}. Let Mp(a) be the subclass of Ap consisting of ...
In the present paper we shall give the radius of starlikeness for the classes of p-valent analytic functions in the unit disc D = { z | |z| < 1 }.

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