“…bending lamination) on the boundary of the convex core. However, in the hyperbolic setting, Bonahon [30] proved that the two infinitesimal rigidity questions, concerning the induced metric and concerning the bending lamination, are equivalent. Bonahon [31] also gave a careful analysis of what happens near the "Fuchsian locus", showing that uniqueness does hold there.…”
“…bending lamination) on the boundary of the convex core. However, in the hyperbolic setting, Bonahon [30] proved that the two infinitesimal rigidity questions, concerning the induced metric and concerning the bending lamination, are equivalent. Bonahon [31] also gave a careful analysis of what happens near the "Fuchsian locus", showing that uniqueness does hold there.…”
“…Indeed recall that every hyperbolic pair of pants with totally geodesic boundary is determined up to isometry by the length of its three boundary components and hence every geometric function is a function of these three parameters. In Section 5, using Thurston's shear coordinates, described by Bonahon in [3], and elementary manipulations involving the classical cross ratio -as opposed to hyperbolic trigonometry in the original proofs -we recover Mirzakhani-McShane formulae (1) and (2) for the pant gap function.…”
Section: These Relations Imply An Essential Symetrymentioning
We generalise the McShane-Mirzakhani identities from hyperbolic geometry to arbitrary cross ratios. We define and study Hitchin representations of open surface groups to PSL(n, R). We associate to these representations cross ratios and then give explicit expressions for our generalised identities in terms of (a suitable choice of) Fock-Goncharov coordinates.
The bending map of a hyperbolic 3-manifold maps a convex cocompact hyperbolic
metric on a hyperbolic 3-manifold with boundary to its bending measured
geodesic lamination. In the present paper we study the extension of this map to
the space of geometrically finite hyperbolic metrics. We introduce a
relationship on the space of measured geodesic laminations and shows that the
quotient map obtained from the bending map is continuous.Comment: 17 pages, 2 figures. Available also at
http://www.maths.warwicK.ac.uk/~clecuir
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