Search Results - "Pilgrim, Kevin M."
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Boundedness of hyperbolic components of Newton maps
Published in Israel journal of mathematics (01-07-2020)“…We investigate boundedness of hyperbolic components in the moduli space of Newton maps. For quartic maps, (i) we prove hyperbolic components possessing two…”
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2
Rationality is decidable for nearly Euclidean Thurston maps
Published in Geometriae dedicata (01-08-2021)“…Nearly Euclidean Thurston (NET) maps are described by simple diagrams which admit a natural notion of size. Given a size bound C , there are finitely many…”
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3
Pullback invariants of Thurston maps
Published in Transactions of the American Mathematical Society (01-07-2016)“…Associated to a Thurston map f: S^2 \to S^2 are several different invariants obtained via pullback: a relation \mathcal {S}_{P} {\stackrel {f}{\longleftarrow…”
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Minimal Ahlfors regular conformal dimension of coarse expanding conformal dynamics on the sphere
Published in Duke mathematical journal (01-10-2014)“…Suppose that f:S^{2}\to S^{2} determines a dynamical system on the sphere which is topologically coarse expanding conformal in the sense of our previous work…”
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Expansion properties for finite subdivision rules I
Published in Science China. Mathematics (01-12-2018)“…Among Thurston maps (orientation-preserving, postcritically finite branched coverings of the 2-sphere to itself), those that arise as subdivision maps of a…”
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6
Origami, Affine Maps, and Complex Dynamics
Published in Arnold mathematical journal (01-09-2017)“…We investigate the combinatorial and dynamical properties of so-called nearly Euclidean Thurston maps , or NET maps . These maps are perturbations of…”
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7
An algebraic formulation of Thurston's combinatorial equivalence
Published in Proceedings of the American Mathematical Society (01-11-2003)“…Let f:S^2 \to S^2 be an orientation-preserving branched covering for which the set P_f of strict forward orbits of critical points is finite and let…”
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Thurston obstructions and Ahlfors regular conformal dimension
Published in Journal de mathématiques pures et appliquées (01-09-2008)“…Let f : S 2 → S 2 be a postcritically finite expanding branched covering map of the sphere to itself. Associated to f is a canonical quasisymmetry class G ( f…”
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Conformal surface embeddings and extremal length
Published in Groups, geometry and dynamics (19-09-2022)“…Given two Riemann surfaces with boundary and a homotopy class of topological embeddings between them, there is a conformal embedding in the homotopy class if…”
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10
Polynomial Basins of Infinity
Published in Geometric and functional analysis (01-08-2011)“…We study the projection which sends an affine conjugacy class of polynomial to the holomorphic conjugacy class of the restriction of f to its basin of…”
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Correspondences on Riemann surfaces and non-uniform hyperbolicity
Published 22-07-2024“…We consider certain analytic correspondences on a Riemann surface, and show that they admit a weak form of expansion. In terms of their algebraic encoding by…”
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On the pullback relation on curves induced by a Thurston map
Published 24-02-2021“…Via taking connected components of preimages, a Thurston map $f: (S^2, P_f) \to (S^2, P_f)$ induces a pullback relation on the set of isotopy classes of curves…”
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13
Smale’s Mean Value Conjecture and Complex Dynamics
Published in Computational methods and function theory (01-01-2012)“…A version of the Smale Mean Value conjecture asserts that for a non-linear complex polynomial of the form , there exists a critical point c of f for which . It…”
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14
On the non-monotonicity of entropy for a class of real quadratic rational maps
Published 29-06-2020“…Journal of Modern Dynamics 16 (2020), 225--254 We prove that the entropy function on the moduli space of real quadratic rational maps is not monotonic by…”
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15
Ahlfors-regular conformal dimension and energies of graph maps
Published 16-12-2021“…For a hyperbolic rational map $f$ with connected Julia set, we give upper and lower bounds on the Ahlfors-regular conformal dimension of its Julia set $J_f$…”
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Bounded hyperbolic components of bicritical rational maps
Published 21-03-2019“…We prove that the hyperbolic components of bicritical rational maps having two distinct attracting cycles each of period at least two are bounded in the moduli…”
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Canonical Thurston Obstructions
Published in Advances in mathematics (New York. 1965) (25-03-2001)“…We refine Douady and Hubbard's proof of Thurston's topological characterization of rational functions by proving the following theorem. Let f:S2→S2 be a…”
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18
Boundedness of Hyperbolic Components of Newton Maps
Published 07-09-2018“…We investigate boundedness of hyperbolic components in the moduli space of Newton maps. For quartic maps, (i) we prove hyperbolic components possessing two…”
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19
Expansion properties for finite subdivision rules II
Published 20-08-2019“…We prove that every sufficiently large iterate of a Thurston map which is not doubly covered by a torus endomorphism and which does not have a Levy cycle is…”
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20
Rationality is decidable for nearly Euclidean Thurston maps
Published 03-12-2018“…Nearly Euclidean Thurston (NET) maps are described by simple diagrams which admit a natural notion of size. Given a size bound $C$, there are finitely many…”
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