Abstract Motivated by Felix Klein's notion that geometry is governed by its group of symmetry
transformations, Charles Ehresmann initiated the study of geometric structures on …

The conjectured squarefree density of an integral polynomial PP in ss variables is an Euler
product SP S_P which can be considered as a product of local densities. We show that a …

We construct two-dimensional families of complex hyperbolic structures on disc orbibundles
over the sphere with three cone points. This contrasts with the previously known examples of …

A complex hyperbolic quasi-Fuchsian group is a discrete, faithful, typepreserving and
geometrically finite representation of a surface group as a subgroup of the group of …

Two-generator groups acting on the complex hyperbolic plane Page 1 Two-generator groups
acting on the complex hyperbolic plane Pierre Will∗ Institut Fourier, Université Joseph Fourier …

We describe a new family of representations of $\pi_1 (\Sigma) $ in $\mathrm {PU}(2, 1) $,
where $\Sigma $ is a hyperbolic Riemann surface with at least one deleted point. This family …

In $\mathrm {PU}(2, 1) $, the group of holomorphic isometries of the complex hyperbolic
plane, we study the space of involutions $ R_1, R_2, R_3, R_4, R_5 $ satisfying …

We investigate the relationship between three natural invariants of complex hyperbolic disc
orbibundles over oriented and closed hyperbolic $2 $-orbifolds. These invariants are the …

arXiv:1510.01500v1 [math.GT] 6 Oct 2015 Page 1 arXiv:1510.01500v1 [math.GT] 6 Oct 2015
Two-generator groups acting on the complex hyperbolic plane Pierre Will∗ Institut Fourier …

We study relations between special elliptic isometries in the complex hyperbolic plane.
Relations of lengths 2, 3, and 4 are fully classified. Some relative SU (2, 1) SU (2, 1) …