Abstract
We give an account on Morgan and Shalen’s work on the compactification of complex affine varieties using valuation spaces and its applications to the geometry of the character variety of a finitely generated group.
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References
M. Bestvina, Degenerations of the hyperbolic space. Duke Math. J. 56(1), 143–161 (1988)
M. Bestvina, M. Feighn, Stable actions of groups on real trees. Invent. Math. 121(2), 287–321 (1995)
N. Bourbaki, Algèbre Commutative, Chapitres 5–7 (Masson, 1985)
R. Benedetti, C. Petronio, Lectures on Hyperbolic Geometry, Universitext (Springer, Berlin, 1991)
M. Culler, Lifting representations to covering groups. Adv. Math. 59, 54–70 (1986)
R. Canary, D. Epstein, P. Green, Notes on notes of Thurston, in Analytical and Geometrical Aspects of Hyperbolic Spaces (Cambridge University Press, Cambridge, 1987), pp. 3–92
I. Chiswell, Abstract length functions in groups. Proc. Cambridge Phil. Soc. 80, 451–463 (1976)
I. Chiswell, Introduction to \(\Lambda \) -Trees (World Scientific, Singapore, 2001)
I. Chiswell, Non standard analysis and the Morgan-Shalen compactification. Quart. J. Math. Oxford Ser. (2) 42(167), 257–270 (1991)
V. Chuckrow, On Schottky groups with applications to Kleinian groups. Ann. Math. 88, 47–61 (1968)
M. Culler, C. Gordon, J. Luecke, P. Shalen, Dehn surgery on knots. Ann. Math. (2) 125, 237–300 (1987)
M. Culler, J. Morgan, Group actions on \(\mathbb{R}\)-trees. Proc. Lond. Math. Soc. 55, 571–604 (1987)
M. Culler, J. Morgan, Varieties of group representations and splittings of 3-manifolds. Ann. Math. 117, 109–146 (1983)
L. Ein, R. Lazarsfeld, K. Smith, Uniform approximation of Abhyankar valuation ideals in smooth function fields. Am. J. Math. 125(2), 409–440 (2003)
A. Fathi, F. Laudenbach, V. Poenaru, Travaux de Thurston sur les surfaces, Astérisque, pp. 66–67 (1979), SMF Paris
W. Floyd, U. Oertel, Incompressible surfaces via branched surfaces. Topology 23, 117–125 (1984)
D. Gaboriau, G. Levitt, F. Paulin, Pseudogroups of isometries of \(\mathbb{R}\) and Rips’ theorem on free actions on \(\mathbb{R}\)-trees. Isr. J. Math. 87, 403–428 (1994)
M. Gromov, Hyperbolic groups. in Essays in Group Theory, ed. by S.M. Gersten (ed.), MSRI Publ., vol. 8 (Springer, Berlin, Heidelberg, New York, 1987), pp. 75–263
R. Hartshorne, Algebraic Geometry. Graduate Texts in Mathematics, vol. 52 (Springer, New York, 1977)
R. Lyndon, Length functions in groups. Math. Scand. 12, 209–234 (1963)
J. Morgan, Group actions on trees and the compactification of the space of classes of \(\mathop{SO}\nolimits (n,1)\)-representations. Topology 25, 1–33 (1986)
J. Morgan, \(\Lambda \)-trees and their applications. Bull. Am. Math. Soc. 26, 87–112 (1992)
J. Morgan, J.-P. Otal, Relative growth rates of closed geodesics on closed surfaces. Comment. Math. Helvitici 68, 171–208 (1993)
J. Morgan, P. Shalen, Degenerations of hyperbolic structures, I: Valuations, trees and surfaces. Ann. Math. 120, 401–476 (1984)
J. Morgan, P. Shalen, Degenerations of hyperbolic structures II: Measured laminations in 3-manifolds. Ann. Math. 127, 403–456 (1988)
J. Morgan, P. Shalen, Degenerations of hyperbolic structures III: Actions of 3-manifold groups on trees and Thurston’s compactness theorem. Ann. Math. 127, 457–519 (1988)
J. Morgan, P. Shalen, Free actions of surface groups on \(\mathbb{R}\)-trees. Topology 30(2), 143–154 (1991)
D. Mumford, Geometric Invariant Theory. Ergebnisse der Mathematik und ihrer Grenzgebiete, vol. 34 (Springer, New York, 1965)
D. Mumford, Algebraic Geometry I: Complex Projective Varieties. Grundlehren der Math. Wiss., vol. 221 (Springer, New York, 1976)
J.-P. Otal, Le théorème d’hyperbolisation pour les variétés fibrées de dimension 3. Astérisque no. 235 (Soc. Math. France, Paris, 1996)
F. Paulin, Topologie de Gromov équivariante, structures hyperboliques et arbres réels. Inv. Math. 94, 53–80 (1988)
F. Paulin, Actions de groupes sur les arbres. Séminaire Bourbaki 1995–96, exp. 808, Astérisque no. 241 (Soc. Math. France, Paris, 1997)
J.G. Ratcliffe, Foundations of Hyperbolic Manifolds. Graduate Texts in Math., vol. 149 (Springer, New York, 1994)
J.-P. Serre, Arbres, Amalgames, \(\mathop{SL}\nolimits (2)\). Astérisque no. 46 (Soc. Math. France, Paris, 1977)
P. Shalen, Dendrology of groups: An introduction. in Essays in Group Theory, ed. by S.M. Gersten. Mathematical Sciences Research Institute Publications, vol. 8 (Springer, New York, 1987)
P. Shalen, Dendrology and its applications, in Group Theory from a Geometrical Viewpoint (Trieste, 1990) (World Scientific, River Edge, NJ, 1991), pp. 543–616
P. Shalen, Representations of 3-manifolds groups, in Handbook of 3-Manifold Groups (North-Holland, Amsterdam, 2002), pp. 955–1044
R. Skora, Geometric actions of surface groups on \(\Lambda \)-trees. Comment. Math. Helvetici 65, 519–533 (1990)
R. Skora, Splittings of surfaces. J. Am. Math. Soc. 9(2), 605–616 (1996)
J. Stallings, A topological proof of Grushko’s theorem on free products. Math. Zeit. 90, 1–8 (1965)
W. Thurston, The Geometry and Topology of 3-Manifolds. Princeton Lecture Notes (1978–1981), http://library.msri.org/books/gt3m/
W. Thurston, Hyperbolic structures on 3-manifolds I: Deformations of acylindrical manifolds. Ann. Math. 124, 203–246 (1986)
W. Thurston, Three-Dimensional Geometry and Topology (Princeton University Press, Princeton, NJ, 1995)
M. Vaquié, Valuations and local uniformization. Singularity theory and its applications, pp. 477–527. Adv. Stud. Pure Math., vol. 43 (Math. Soc. Japan, Tokyo, 2006)
M. Vaquié, Extension d’une valuation. Trans. Am. Math. Soc. 359(7), 3439–3481 (2007)
A. Weil, On discrete subgroups of Lie groups. Ann. Math. (2) 72, 369–384 (1960)
O. Zariski, Foundations of a general theory of birational correspondences. Trans. Am. Math. Soc. 53, 490–542 (1943)
O. Zariski, The compactness of the Riemann manifold of an abstract field of algebraic functions. Bull. Am. Math. Soc. 50, 683–691 (1944)
O. Zariski, P. Samuel, Commutative Algebra, vol. 2. Graduate Texts in Mathematics no 29 (Springer, New York-Heidelberg-Berlin, 1975)
Acknowledgements
I would like to thank Charles Favre, Jan Kiwi, and Juan Rivera-Letelier for the invitation to give a course during the “Ultrametric Dynamics Days” in Santiago de Chile in January 2008. This paper owes a lot to Charles who encouraged me to develop my set of notes to an actual paper and made several important suggestions. The referee, through his constant criticism, also helped to bring the paper to its actual form.
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Otal, JP. (2015). Compactification of Spaces of Representations After Culler, Morgan and Shalen. In: Ducros, A., Favre, C., Nicaise, J. (eds) Berkovich Spaces and Applications. Lecture Notes in Mathematics, vol 2119. Springer, Cham. https://doi.org/10.1007/978-3-319-11029-5_7
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