Blar i Institutt for matematiske fag på tidsskrift "Annales de l'Institut Fourier"
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Approximation numbers of composition operators on H^p spaces of Dirichlet series
(Journal article; Peer reviewed, 2016)By a theorem of the first named author, $\varphi $ generates a bounded composition operator on the Hardy space ${\mathscr{H}}^p$of Dirichlet series $(1\le p<\infty )$ only if $\varphi (s)=c_0 s+\psi (s)$, where $c_0$ is a ... -
Real-Valued Algebro-Geometric Solutions of the Two-Component Camassa–Holm Hierarchy
(Journal article; Peer reviewed, 2017)We provide a construction of the two-component Camassa– Holm (CH-2) hierarchy employing a new zero-curvature formalism and identify and describe in detail the isospectral set associated to all real-valued, smooth, and ... -
The spectrum of some Hardy kernel matrices
(Journal article; Peer reviewed, 2023) -
The rational stable homology of mapping class groups of universal nil-manifolds
(Journal article; Peer reviewed, 2018)We compute the rational stable homology of the automorphism groups of free nilpotent groups. These groups interpolate between the general linear groups over the ring of integers and the automorphism groups of free groups, ...