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Asymptotic Problems on Homogeneous SpacesPrimeFaces.cw("AccordionPanel","widget_formSmash_some",{id:"formSmash:some",widgetVar:"widget_formSmash_some",multiple:true}); PrimeFaces.cw("AccordionPanel","widget_formSmash_all",{id:"formSmash:all",widgetVar:"widget_formSmash_all",multiple:true});
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2010 (English)Doctoral thesis, comprehensive summary (Other academic)
##### Abstract [en]

##### Place, publisher, year, edition, pages

Uppsala: Department of Mathematics , 2010. , p. 24
##### Series

Uppsala Dissertations in Mathematics, ISSN 1401-2049 ; 68
##### Keywords [en]

Analysis on homogeneous spaces, hyperbolic manifolds, spectral theory, equidistribution, the space of lattices, length statistics, Poisson process, moments, Epstein zeta function, value distribution, height function.
##### National Category

Mathematics
##### Research subject

Mathematics
##### Identifiers

URN: urn:nbn:se:uu:diva-132645ISBN: 978-91-506-2163-1 (print)OAI: oai:DiVA.org:uu-132645DiVA, id: diva2:359184
##### Public defence

2010-12-09, Polhemsalen, Ångströmlaboratoriet, Lägerhyddsvägen 1, Uppsala, 13:15 (English)
##### Opponent

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#####

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##### Funder

Available from: 2010-11-17 Created: 2010-10-23 Last updated: 2010-11-17Bibliographically approved
##### List of papers

This PhD thesis consists of a summary and five papers which all deal with asymptotic problems on certain homogeneous spaces.

In Paper I we prove asymptotic equidistribution results for pieces of large closed horospheres in cofinite hyperbolic manifolds of arbitrary dimension. All our results are given with precise estimates on the rates of convergence to equidistribution.

Papers II and III are concerned with statistical problems on the space of n-dimensional lattices of covolume one. In Paper II we study the distribution of lengths of non-zero lattice vectors in a random lattice of large dimension. We prove that these lengths, when properly normalized, determine a stochastic process that, as the dimension n tends to infinity, converges weakly to a Poisson process on the positive real line with intensity 1/2. In Paper III we complement this result by proving that the asymptotic distribution of the angles between the shortest non-zero vectors in a random lattice is that of a family of independent Gaussians.

In Papers IV and V we investigate the value distribution of the Epstein zeta function along the real axis. In Paper IV we determine the asymptotic value distribution and moments of the Epstein zeta function to the right of the critical strip as the dimension of the underlying space of lattices tends to infinity. In Paper V we determine the asymptotic value distribution of the Epstein zeta function also in the critical strip. As a special case we deduce a result on the asymptotic value distribution of the height function for flat tori. Furthermore, applying our results we discuss a question posed by Sarnak and Strömbergsson as to whether there in large dimensions exist lattices for which the Epstein zeta function has no zeros on the positive real line.

1. On the uniform equidistribution of closed horospheres in hyperbolic manifolds$(function(){PrimeFaces.cw("OverlayPanel","overlay358672",{id:"formSmash:j_idt538:0:j_idt542",widgetVar:"overlay358672",target:"formSmash:j_idt538:0:partsLink",showEvent:"mousedown",hideEvent:"mousedown",showEffect:"blind",hideEffect:"fade",appendToBody:true});});

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