Results 91 to 100 of about 532 (159)

Detecting quasiconvexity: Algorithmic aspects

open access: yes, 1995
The main result of this paper states that for any group $G$ with an automatic structure $L$ with unique representatives one can construct a uniform partial algorithm which detects $L$-rational subgroups and gives their preimages in $L$. This provides a practical, not just theoretical, procedure for solving the occurrence problem for such subgroups.
openaire   +2 more sources

Jensen's Inequality for Quasiconvex Functions

open access: yes, 2009
Some inequalities of Jensen type and connected results are given for quasiconvex functions on convex sets in real linear ...
Pearce, Charles E. M, Dragomir, Sever S
core  

Quasiconvexity and separability in relatively hyperbolic groups

open access: yes
In this thesis, we aim to understand the behaviour of quasiconvexity under the basic operation of taking joins of subgroups. We will also study the relation between quasiconvexity and residual properties of relatively hyperbolic groups.In particular ...
Mineh, Lawk
core  

Relative rigidity, quasiconvexity and C-complexes

open access: yes, 2008
We introduce and study the notion of relative rigidity for pairs (X, J ) where 1) X is a hyperbolic metric space and J a collection of quasiconvex sets 2) X is a relatively hyperbolic group and J the collection of parabolics 3) X is a higher rank ...
Mahan, M. J.
core  

Normal automorphisms of relatively hyperbolic groups

open access: yes, 2010
An automorphism of a group G is normal if it fixes every normal subgroup of G setwise. We give an algebraic description of normal automorphisms of relatively hyperbolic groups.
D. Osin   +3 more
core   +1 more source

Quasiconvexity: the quadratic case revisited, and some consequences for fourth-degree

open access: yes, 2011
We provide an alternative proof (based on ideas of mathematical programming) for the well-known quadratic case for which quasiconvexity and rank-one convexity are equivalent. It does not make use of Plancherel formula.
Pedregal, Pablo, Bandeira, Luís
core  

Finite elastic wrinkling deformations of incompressible fiber-reinforced plates. [PDF]

open access: yesInt J Eng Sci, 2019
Taylor M   +4 more
europepmc   +1 more source

Analysis of new situations for quasiconvexity versus rank-one convexity in 2 x 2 and other dimensions [PDF]

open access: yes, 2008
It is well-known that quasiconvexity is a fundamental concept for vector problems in the Calculus of Variations. Its main necessary condition is rankone convexity. Still today it is not known whether it is also sufficient or not, when the target space of
Bandeira, Luís Miguel Zorro
core  

Shape-Aware Matching of Implicit Surfaces Based on Thin Shell Energies. [PDF]

open access: yesFound Comut Math, 2018
Iglesias JA, Rumpf M, Scherzer O.
europepmc   +1 more source

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