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Ahlfors finiteness theorem information


In the mathematical theory of Kleinian groups, the Ahlfors finiteness theorem describes the quotient of the domain of discontinuity by a finitely generated Kleinian group. The theorem was proved by Lars Ahlfors (1964, 1965), apart from a gap that was filled by Greenberg (1967).

The Ahlfors finiteness theorem states that if Γ is a finitely-generated Kleinian group with region of discontinuity Ω, then Ω/Γ has a finite number of components, each of which is a compact Riemann surface with a finite number of points removed.

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Ahlfors finiteness theorem

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Lars Ahlfors (1964, 1965), apart from a gap that was filled by Greenberg (1967). The Ahlfors finiteness theorem states that if Γ is a finitely-generated...

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Lars Ahlfors

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Ahlfors died of pneumonia at the Willowwood nursing home in Pittsfield, Massachusetts in 1996. Ahlfors finiteness theorem Ahlfors function Ahlfors measure...

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Finiteness theorem

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mathematics, there are several finiteness theorems. Ahlfors finiteness theorem Finiteness theorem for a proper morphism Finiteness theorem for formal schemes This...

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Kleinian group

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generators. The Ahlfors finiteness theorem says that such a group is of finite type. A Kleinian group Γ has finite covolume if H3/Γ has finite volume. Any...

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Residue theorem

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In complex analysis, the residue theorem, sometimes called Cauchy's residue theorem, is a powerful tool to evaluate line integrals of analytic functions...

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Riemann mapping theorem

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solving the problem: in this situation it is often called the Ahlfors function of G, after Ahlfors. Let 0 < M ≤ ∞ {\displaystyle 0<M\leq \infty } be the supremum...

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Fundamental theorem of algebra

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The fundamental theorem of algebra, also called d'Alembert's theorem or the d'Alembert–Gauss theorem, states that every non-constant single-variable polynomial...

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Nevanlinna theory

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called the Ahlfors–Shimizu characteristic. The bounded term O(1) is not important in most questions. The geometric meaning of the Ahlfors—Shimizu characteristic...

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List of theorems

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Schwarz–Ahlfors–Pick theorem (differential geometry) Schwenk's theorem (graph theory) Scott core theorem (3-manifolds) Seifert–van Kampen theorem (algebraic...

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Ahlfors measure conjecture

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In mathematics, the Ahlfors conjecture, now a theorem, states that the limit set of a finitely-generated Kleinian group is either the whole Riemann sphere...

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Ahlfors theory

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Ahlfors theory is a mathematical theory invented by Lars Ahlfors as a geometric counterpart of the Nevanlinna theory. Ahlfors was awarded one of the two...

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Tameness theorem

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3-manifolds, together with the density theorem for Kleinian groups and the ending lamination theorem. It also implies the Ahlfors measure conjecture. Topological...

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Grunsky matrix

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= |eg|2. Ahlfors 1966 Schiffer 1959, p. 261 Schiffer & Hawley 1962, p. 246 Schiffer & Hawley 1962, pp. 245–246 Takhtajan & Teo 2006 Ahlfors, Lars V. (1952)...

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Riemann surface

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Math. Studies. Vol. 79 (published 1974). pp. 207–226. ISBN 0691081387. Ahlfors, Lars; Sario, Leo (1960). Riemann Surfaces (1st ed.). Princeton, New Jersey:...

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Geometry

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Archived from the original on 1 March 2023. Retrieved 9 September 2022. Ahlfors, Lars V. (1979). Complex analysis : an introduction to the theory of analytic...

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Geometric function theory

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a quasiconformal mapping, introduced by Grötzsch (1928) and named by Ahlfors (1935), is a homeomorphism between plane domains which to first order takes...

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List of unsolved problems in mathematics

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Bourgain-Tzafriri conjecture and R ϵ {\displaystyle R_{\epsilon }} -conjecture) Ahlfors measure conjecture (Ian Agol, 2004) Gradient conjecture (Krzysztof Kurdyka...

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Analytic continuation

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where we can find all of the non-trivial zeros of this zeta function. Lars Ahlfors (1979). Complex Analysis (3 ed.). McGraw-Hill. pp. 172, 284. Ludwig Bieberbach...

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Complex analysis

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Fokas, Complex Variables: Introduction and Applications (Cambridge, 2003). Ahlfors, L., Complex Analysis (McGraw-Hill, 1953). Cartan, H., Théorie élémentaire...

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List of conjectures

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as of September 2022[update]. The conjecture terminology may persist: theorems often enough may still be referred to as conjectures, using the anachronistic...

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Fields Medal

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"Lars Valerian Ahlfors (1907–1996)" (PDF). Ams.org. Archived (PDF) from the original on 3 March 2022. Retrieved 31 March 2017. "Lars Ahlfors (1907–1996)"...

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Line integral

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18, 2020. "16.2 Line Integrals". www.whitman.edu. Retrieved 2020-09-18. Ahlfors, Lars (1966). Complex Analysis (2nd ed.). New York: McGraw-Hill. p. 103...

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