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653
Symmetry and
"... A“pinwheel ” tiling of the plane (as in Figure 1) does not have any translational or rotational symmetry in the usual sense. But in a tantalizing, unconventional way it is highly symmetric, and this unusual form of symmetry has significant applications, for instance, in classifying the internal stru ..."
The NIST Model for RoleBased Access Control: Towards A Unified Standard
"... This paper describes a unified model for rolebased access control (RBAC). RBAC is a proven technology for largescale authorization. However, lack of a standard model results in uncertainty and confusion about its utility and meaning. The NIST model seeks to resolve this situation by unifying ideas ..."
Abstract

Cited by 198 (3 self)
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ideas from prior RBAC models, commercial products and research prototypes. It is intended to serve as a foundation for developing future standards. RBAC is a rich and openended technology which is evolving as users, researchers and vendors gain experience with it. The NIST model focuses on those
Palindromic richness for languages invariant under more symmetries
, 2013
"... For a given finite group G consisting of morphisms and antimorphisms of a free monoid A∗, we study infinite words with language closed under the group G. We focus on the notion of Grichness which describes words rich in generalized palindromic factors, i.e., in factors w satisfying Θ(w) = w for so ..."
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For a given finite group G consisting of morphisms and antimorphisms of a free monoid A∗, we study infinite words with language closed under the group G. We focus on the notion of Grichness which describes words rich in generalized palindromic factors, i.e., in factors w satisfying Θ(w) = w
Pairing and isospin symmetry in protonrich nuclei
, 1996
"... Unlike their counterparts in the sd shell, most oddodd N = Z nuclei with A> 40 have ground states with isospin T=1, suggesting an increased role for the isovector pairing interaction. In a simple senioritylike model of this interaction, the effects of likeparticle and neutronproton pairing va ..."
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in N = Z ground states as the mass increases. Realistic calculations in fp shell nuclei yield very similar patterns, even though deformation and other kinds of correlations are also predicted. The persistence of the patterns in the face of other effects suggests that real protonrich nuclei exhibit
Pairing and isospin symmetry in protonrich nuclei
, 2008
"... Unlike their lighter counterparts, most oddodd N = Z nuclei with mass A> 40 have ground states with isospin T=1, suggesting an increased role for the isovector pairing interaction. A simple SO(5) senioritylike model of this interaction reveals a striking and heretofore unnoticed interplay betwe ..."
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Unlike their lighter counterparts, most oddodd N = Z nuclei with mass A> 40 have ground states with isospin T=1, suggesting an increased role for the isovector pairing interaction. A simple SO(5) senioritylike model of this interaction reveals a striking and heretofore unnoticed interplay between likeparticle and neutronproton isovector pairing near N = Z that is reflected in the number of each kind of pair as a function of A and T. Large scale shellmodel calculations exhibit the same trends, despite the simultaneous presence of isoscalar pairs, deformation, and other correlations.
Global Symmetries of Noncommutative Space time
, 2005
"... The global counterpart of infinitesimal symmetries of noncommutative spacetime is discussed. supported by the grant 1 P03B 02 128 of the Polish Ministry of Science. 1 Some atttention has been paid recently to the problem of spacetime symmetries for noncommutative field theories (NCFT), [1]÷[9]. It ..."
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and the translations remains. However, when discussing the properties of NCFT one has often refer to the whole Poincare group. It has been suggested [1], [2], that the noncommutative spacetime carries as rich symmetry as the Poincare one provided this
Global Symmetries of Noncommutative Space time
, 2005
"... The global counterpart of infinitesimal symmetries of noncommutative spacetime is discussed. supported by the grant 1 P03B 02 128 of the Polish Ministry of Science. 1 Some atttention has been paid recently to the problem of spacetime symmetries for noncommutative field theories (NCFT), [1]÷[9]. It ..."
Abstract
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and the translations remains. However, when discussing the properties of NCFT one has often refer to the whole Poincare group. It has been suggested [1], [2], that the noncommutative spacetime carries as rich symmetry as the Poincare one provided this
Chiral Symmetry Restoration and ZN Symmetry
, 2008
"... We demonstrate that chiral symmetry restoration in quenched finite temperature QCD depends crucially on the Z3 phase of the Polyakov loop P. This dependence is a general consequence of the coupling of the chiral order parameter to the Polyakov loop. We construct a model for chiral symmetry breaking ..."
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finite temperature correction to the effective potential is reversed from the normal phase, and chiral symmetry is not restored at the deconfinement transition; this agrees with the recent simulation studies of Chandrasekharan and Christ. In the case of SU(N) a rich set of possibilites emerges
CalabiYau moduli space, mirror manifolds and spacetime topology change in string theory
 Nucl. Phys. B
, 1994
"... We analyze the moduli spaces of CalabiYau threefolds and their associated conformally invariant nonlinear σmodels and show that they are described by an unexpectedly rich geometrical structure. Specifically, the Kähler sector of the moduli space of such CalabiYau conformal theories admits a decom ..."
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Cited by 141 (20 self)
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We analyze the moduli spaces of CalabiYau threefolds and their associated conformally invariant nonlinear σmodels and show that they are described by an unexpectedly rich geometrical structure. Specifically, the Kähler sector of the moduli space of such CalabiYau conformal theories admits a
A Remarkable Periodic Solution of the ThreeBody Problem in the Case of Equal Masses
, 2000
"... Using a variational method, we exhibit a surprisingly simple periodic orbit for the newtonian problem of three equal masses in the plane. The orbit has zero angular momentum and a very rich symmetry pattern. Its most surprising feature is that the three bodies chase each other around a fixed eights ..."
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Cited by 104 (10 self)
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Using a variational method, we exhibit a surprisingly simple periodic orbit for the newtonian problem of three equal masses in the plane. The orbit has zero angular momentum and a very rich symmetry pattern. Its most surprising feature is that the three bodies chase each other around a fixed eight
Results 1  10
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653