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Now showing items 2521-2530 of 3781
(Doctoral thesis / Doktoravhandling, 2019)
Teknikker og konsepter som er knyttet til kombinatorikk blir ofte brukt innenalgebraisk geometri. Et eksempel på dette er toriske degenerasjoner, som kanbrukes til å besvare visse klassifiseringsspørsmål. I denne avhandlingen ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
We compare three different models of two phase flow in a porous medium; the standard Darcy/Buckley–Leverett model, the Brinkman model and the Helmholtz model. These three models are all singular perturbations of the inviscid ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
We provide a rather simple proof of a homogenization result for the bidomain model of cardiac electrophysiology. Departing from a microscopic cellular model, we apply the theory of two-scale convergence to derive the ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2018)
We study how the geometry of a projective variety X is reflected in the positivity properties of the diagonal ΔX considered as a cycle on X×X. We analyze when the diagonal is big, when it is nef, and when it is rigid. In ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
This article is concerned with inference in parametric copula setups, where both the marginals and the copula have parametric forms. For such models, two-stage maximum likelihood estimation, often referred to as inference ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
We give a description of cyclic cohomology and its pairing with K-groups for 2-cocycle deformation of algebras graded over discrete groups. The proof relies on a realization of monodromy for the Gauss–Manin connection on ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
We develop a method to give presentations of quantized function algebras of complex reductive groups. In particular, we give presentations of quantized function algebras of automorphism groups of finite dimensional simple ...
(Doctoral thesis / Doktoravhandling, 2018)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
Each extended Cartan-Eilenberg system (H,∂) gives rise to two exact couples and one spectral sequence. We show that the canonical colim-lim interchange morphism associated to H is a surjection, and that its kernel is ...