We construct complete, open, hyperbolic
4-manifolds of smallest volume by gluing together the sides of a regular
ideal 24-cell in hyperbolic 4-space. We also show that the volume spectrum
of hyperbolic 4-manifolds is the set of all positive integral multiples of $4\pi^2/3$.
@article{1046889595,
author = {Ratcliffe, John G. and Tschantz, Steven T.},
title = {The volume spectrum of hyperbolic 4-manifolds},
journal = {Experiment. Math.},
volume = {9},
number = {3},
year = {2000},
pages = { 101-125},
language = {en},
url = {http://dml.mathdoc.fr/item/1046889595}
}
Ratcliffe, John G.; Tschantz, Steven T. The volume spectrum of hyperbolic 4-manifolds. Experiment. Math., Tome 9 (2000) no. 3, pp. 101-125. http://gdmltest.u-ga.fr/item/1046889595/