Algebra Bernays University

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20032009

most citedClassification of integrable super-systems using the SsTools environment

17 citations

Showing 2007Show all

3 papers · 1 filter

math.DS2007

A local-global problem for linear differential equations

Marius van der Put, Marc Reversat

An inhomogeneous linear differential equation Ly=f over a global differential field can have a formal solution for each place without having a global solution. The vector space lgl…

math.KT2007

Antisymmetric elements in group rings with an orientation morphism

O. Broche, E. Jespers, M. Ruiz

Let $R$ be a commutative ring, $G$ a group and $R G$ its group ring. Let $ϕ_{σ} : R G \to R G$ denote the involution defined by $ϕ_{σ} (\sum r_{g} g) = \sum r_{g} σ (g) g^{- 1}$ , where $σ:G\t…

math.GR2007

Class-preserving automorphisms and the normalizer property for Blackburn groups

Martin Hertweck, Eric Jespers

For a group $G$ , let $U$ be the group of units of the integral group ring $Z G$ . The group $G$ is said to have the normalizer property if $N_{U} (G) = Z (U) G$ . It i…