Ruth Kellerhals

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For an arbitrary cocompact hyperbolic Coxeter group G with finite generator set S and complete growth function fS(x) = P (x)/Q(x) , we provide a recursion formula for the coefficients of the denominator polynomial Q(x). It allows to determine recursively the Taylor coefficients and to study the arithmetic nature of the poles of the growth function fS(x) in(More)
We provide a survey of hyperbolic orbifolds of minimal volume, starting with the results of Siegel in two dimensions and with the contributions of Gehring, Martin and others in three dimensions. For higher dimensions, we summarise some of the most important results, due to Belolipetsky, Emery and Hild, by discussing related features such as hyperbolic(More)
By different scissors congruence techniques a number of dissection identities are presented between certain quasi-Coxeter polytopes, whose parameters are related to the golden section, and an ideal regular simplex in hyperbolic 5-space. As a consequence, several hyperbolic polyhedral 5-volumes can be computed explicitly in terms of Apéry’s constant ζ(3) and(More)
A system is illustrated here for transplantation of bone marrow (BMT) across the H-2 barrier in conventionally raised mice. Timing of BM inoculation after supralethal irradiation, alteration of cellular composition of BM cell inoculum, sex of donor and recipient, inoculation or removal of BM-derived supernatants, use of BM-derived factors were all variables(More)
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