103 citations
4 papers
Triangular hyperbolic buildings
Riikka Kangaslampi, Alina Vdovina
We construct triangular hyperbolic polyhedra whose links are generalized 4-gons. The universal cover of those polyhedra are hyperbolic buildings, which appartments are hyperbolic p…
Environmental effects on the spread of the Neolithic
K. Davison, P. M. Dolukhanov, G. R. Sarson +1
The causes and implications of the regional variations in the spread of the incipient agriculture in Europe remain poorly understood. We apply population dynamics models to study t…
Mach number dependence of the onset of dynamo action
Nils Erland L. Haugen, Axel Brandenburg, Antony J. Mee
The effect of compressibility on the onset of nonhelical turbulent dynamo action is investigated using both direct simulations as well as simulations with shock-capturing viscositi…
Outer factorizations in one and several variables
Michael A. Dritschel, Hugo J. Woerdeman
A multivariate version of Rosenblum's Fejer-Riesz theorem on outer factorization of trigonometric polynomials with operator coefficients is considered. Due to a simplification of t…