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# Träfflista för sökning "WFRF:(Carlsson Linus 1972 ) "

Sökning: WFRF:(Carlsson Linus 1972 )

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1.
• Aye, Tin Nwe, et al. (författare)
• Increasing effciency in the EBT algorithm
• 2019
• Ingår i: ; , s. 179-205
• Konferensbidrag (refereegranskat)abstract
• The Escalator Boxcar Train (EBT) is a commonly used method for solving physiologically structured population models. The main goal of this paper is to overcome computational disadvantages of the EBT method. We prove convergence, for a general class of EBT models in which we modify the original EBT formulation, allowing merging of cohorts. We show that this modified EBT method induces a bounded number of cohorts, independent of the number of time steps. This in turn, improve the numerical algorithm from polynomial to linear time. An EBT simulation of the Daphnia model is used as an illustration of these findings.
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2.
• Backlund, Ulf, et al. (författare)
• Semi-Bloch functions in several complex variables
• 2013
• Rapport (övrigt vetenskapligt)abstract
• Let $M$ be an $n$-dimensional complex manifold. A holomorphic function $f:M\to \mathbb C$ is said to be semi-Bloch if for every $\lambda\in \mathbb C$ the function $g_\lambda=\exp(\lambda f(z))$ is normal on $M$. We characterise Semi-Bloch functions on infinitesimally Kobayashi non-degenerate $M$ in geometric as well as analytic terms. Moreover, we show that on such manifolds, semi-Bloch functions are normal.
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3.
• Carlsson, Linus, 1972-, et al. (författare)
• A note on B-envelope of holomorphy and B-extendable domains
• 2008
• Ingår i: Complex Variables and Elliptic Equations. - Abingdon, Oxon, UK : Taylor & Francis. - 1747-6933 .- 1747-6941. ; 53:4, s. 307-309
• Tidskriftsartikel (refereegranskat)abstract
• Let   be a Banach Algebra on a Riemann domain X over  . We show that under certain conditions on   and X, all functions in   can be extended to functions in  where   is the  -envelope of holomorphy.
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4.
• Carlsson, Linus, 1972- (författare)
• An equivalence to the Gleason problem
• 2010
• Ingår i: Journal of Mathematical Analysis and Applications. - 0022-247X .- 1096-0813. ; 370:2, s. 373-378
• Tidskriftsartikel (refereegranskat)abstract
• In this article we study the Gleason problem locally. A new method for solving the Gleason A problem is presented. This is done by showing an equivalent statement to the Gleason A problem. In order to prove this statement, necessary and a sufficient conditions for a bounded domain to have the Gleason A property are found. Also an example of a bounded but not smoothly-bounded domain in C(n) is given, which satisfies the sufficient condition at the origin, and hence has the Gleason A property there.
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• Carlsson, Linus, 1972- (författare)
• Ideals and boundaries in Algebras of Holomorphic functions
• 2006
• Doktorsavhandling (övrigt vetenskapligt)abstract
• We investigate the spectrum of certain Banach algebras. Properties like generators of maximal ideals and generalized Shilov boundaries are studied. In particular we show that if the ∂-equation has solutions in the algebra of bounded functions or continuous functions up to the boundary of a domain D ⊂⊂ Cn then every maximal ideal over D is generated by the coordinate functions. This implies that the fibres over D in the spectrum are trivial and that the projection on Cn of the n − 1 order generalized Shilov boundary is contained in the boundary of D.For a domain D ⊂⊂ Cn where the boundary of the Nebenhülle coincide with the smooth strictly pseudoconvex boundary points of D we show that there always exist points p ∈ D such that D has the Gleason property at p.If the boundary of an open set U is smooth we show that there exist points in U such that the maximal ideals over those points are generated by the coordinate functions.An example is given of a Riemann domain, Ω, spread over Cn where the fibers over a point p ∈ Ω consist of m > n elements but the maximal ideal over p is generated by n functions.
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7.
• Carlsson, Linus, 1972- (författare)
• Nebenhülle and the Gleason problem
• 2010
• Ingår i: Proceedings of the American Mathematical Society. - 0002-9939 .- 1088-6826. ; 138:1, s. 267-273
• Tidskriftsartikel (refereegranskat)
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8.
• Carlsson, Linus, 1972-, et al. (författare)
• Spectrum of certain Banach algebras and DBAR-problems
• 2007
• Ingår i: Annales Polonici Mathematici. - 0066-2216. ; 90:1, s. 51-58
• Tidskriftsartikel (refereegranskat)abstract
• We study the spectrum of certain Banach algebras of holomorphic functions defined on a domain Ω where ∂−-problems with certain estimates can be solved. We show that the projection of the spectrum onto Cn equals Ω−− and that the fibers over Ω are trivial. This is used to solve a corona problem in the special case where all but one generator are continuous up to the boundary.
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