Free groups acting without fixed points on rational spheres
For every positive rational number q, we find a free group of rotations of rank 2 acting on (√q𝕊²) ∩ ℚ³ whose all elements distinct from the identity have no fixed point.
Free quotients of congruence subgroups of Bianchi groups.
Free Quotients of Congruence Subgroups of SL2 Over a Coordinate Ring.
Free quotients of finitely presented groups.
Fuchsian groups and uniformization of Hurwitz spaces.
Fuchssche Gruppen, die freies Produkt zweier zyklischer Gruppen sind, und die Gleichung x2 + y2 + z2 = xyz.
Gauss sums for O⁺(2n,q)
Gauss sums for O⁻(2n,q)
Genera of congruence subgroups in Q-quaternion algebras.
Generalization of the symplectic modular group
Generalized Hantzsche-Wendt flat manifolds.
We study the family of closed Riemannian n-manifolds with holonomy group isomorphic to Z2n-1, which we call generalized Hantzsche-Wendt manifolds. We prove results on their structure, compute some invariants, and find relations between them, illustrated in a graph connecting the family.
Generalized Magnus Embeddings and Some Applications.
Generalized Shubnikov space groups.
Generators of the unitary group of characteristic 2.
Géométrie d'une famille de groupes agissant sur le produit de deux variétés d'Hadamard
Geometry of Free Products.
Group analysis methods for construction and investigation of the bifurcation equation
Group Completions and Limit Sets of Kleinian Groups.
Group rings and irreducible representations of space groups.
Group Rings of Circle and Unit Groups.