Download e-book for kindle: Geometry, Rigidity, and Group Actions (Chicago Lectures in by Benson Farb, David Fisher

By Benson Farb, David Fisher

ISBN-10: 0226237885

ISBN-13: 9780226237886

The learn of crew activities is greater than 100 years outdated yet is still to this present day a colourful and greatly studied subject in numerous mathematic fields. A principal improvement within the final fifty years is the phenomenon of stress, wherein you could classify activities of convinced teams, corresponding to lattices in semi-simple Lie groups. This offers how to classify all attainable symmetries of significant areas and all areas admitting given symmetries. Paradigmatic effects are available within the seminal paintings of George Mostow, Gergory Margulis, and Robert J. Zimmer, between others. The papers in Geometry, pressure, and crew activities discover the position of workforce activities and pressure in different parts of arithmetic, together with ergodic idea, dynamics, geometry, topology, and the algebraic houses of illustration forms. now and again, the dynamics of the potential crew activities are the relevant concentration of inquiry. In different situations, the dynamics of crew activities are a device for proving theorems approximately algebra, geometry, or topology. This quantity includes surveys of a few of the most instructions within the box, in addition to examine articles on issues of present curiosity.

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Extra info for Geometry, Rigidity, and Group Actions (Chicago Lectures in Mathematics)

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Ghys: Actions de réseaux sur le cercle. Invent. , 137(1):199–231 (1999). E. Ghys: Groups acting on the circle. Enseign. Math. (2), 47(3–4):329–407 (2001). Y. Guivarc’h, A. Raugi: Products of random matrices: convergence theorems. Random matrices and their applications (Brunswick, ME, 1984), 31–54, Contemp. , 50, American Mathematical Society, Providence, RI, 1986. G. Hector, U. Hirsch: Introduction to the geometry of foliations. Part B. Foliations of codimension one. Aspects of Mathematics, E3.

11. Let ξ ∈ M1 (S1 ) be a probability measure without atoms and hξ : S1 → S1 x −→ ξ ([˙o, x)) mod Z the associated quasiconjugacy. Then, 1) hξ is continuous. 2) the measure (hξ )∗ (ξ ) has no atoms and its support equals S1 . an extension criterion for lattice actions on the circle / 25 3) for ξ 3 -almost every (x, y, z) ∈ (S1 )3 we have o(hξ (x), hξ (y), hξ (z)) = o(x, y, z). 12. e. a ∈ B, let ξ = (fa )∗ (νB ) and define ϕa := hξ ◦ fa . Then 1) (ϕa )∗ (νB ) has no atoms. 2) Ess Im ϕa = S1 . e. (x, y, z) ∈ B3 .

Geom. Funct. , 19(3):678–721 (2009). an extension criterion for lattice actions on the circle / 31 [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24] [25] [26] [27] M. Burger, N. Monod: Continuous bounded cohomology and applications to rigidity theory. Geom. Funct. , 12(2):219–280 (2002). B. Deroin, V. Kleptsyn, A. Navas: Sur la dynamique unidimensionnelle en régularité intermédiaire. , 199(2):199–262 (2007). A. Furman: Mostow-Margulis rigidity with locally compact targets.

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Geometry, Rigidity, and Group Actions (Chicago Lectures in Mathematics) by Benson Farb, David Fisher

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