151 citations
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Showing 2009Show all
3 papers · 1 filter
math.GR2009
The monomorphism problem in free groups
Laura Ciobanu, Abderezak Ould Houcine
Let be a free group of finite rank. We say that the monomorphism problem in is decidable if for any two elements and in , there is an algorithm that determines w…
cond-mat.soft2009★ 40 cited
Relevance of visco-plastic theory in a multi-directional inhomogeneous granular flow
P. -P. Cortet, D. Bonamy, F. Daviaud +3
We confront a recent visco-plastic description of dense granular flows [P. Jop et al, Nature, {\bf 441} (2006) 727] with multi-directional inhomogeneous steady flows observed in no…
math.AP2009★ 1 cited
Control of the Continuity Equation with a Non Local Flow
Rinaldo M. Colombo, Michael Herty, Magali Mercier
This paper focuses on the optimal control of weak (i.e. in general non smooth) solutions to the continuity equation with non local flow. Our driving examples are a supply chain mod…