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113 papers · 1 filter
Algebro-gemetric aspects of Heine-Stieltjes theory
Boris Shapiro
The goal of this paper is to develop a Heine-Stieltjes theory for univariate linear differential operators of higher order. Namely, for a given given operator T=\sum_i Q_i(z)d^i/dz…
Epidemic modelling: aspects where stochasticity matters
Tom Britton, David Lindenstrand
Epidemic models are always simplifications of real world epidemics. Which real world features to include, and which simplifications to make, depend both on the disease of interest…
Fermi LAT Observations of the Vela Pulsar
A. A. Abdo
The Vela pulsar is the brightest persistent source in the GeV sky and thus is the traditional first target for new gamma-ray observatories. We report here on initial Fermi Large Ar…
Some algebraic properties of hypergraphs
Eric Emtander, Fatemeh Mohammadi, Somayeh Moradi
We consider Stanley--Reisner rings $k[x_1,...,x_n]/I(\mc{H})$ where $I(\mc{H})$ is the edge ideal associated to some particular classes of hypergraphs. For instance, we consider hy…
Modeling the X-ray emission of SN 1993J
Tanja K. Nymark, Poonam Chandra, Claes Fransson
We investigate the effects of radiative shocks on the observed X-ray emission from the Type II supernova SN 1993J. To this end, the X-ray emission is modeled as a result of the int…
Decomposition of D-modules over a hyperplane arrangement in the plane
Tilahun Abebaw, Rikard Bøgvad
We consider the D-module defined as the push-forward of a rank one linear system on the complement of a central plane hyperplane arrangement, and calculate its decomposition series…