Results 1  10
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334
Orientifolds and Mirror symmetry
, 2003
"... We study parity symmetries and crosscap states in classes of N = 2 supersymmetric quantum field theories in 1+1 dimensions, including nonlinear sigma models, gauged WZW models, LandauGinzburg models, and linear sigma models. The parity anomaly and its cancellation play important roles in many of t ..."
Abstract

Cited by 271 (11 self)
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We study parity symmetries and crosscap states in classes of N = 2 supersymmetric quantum field theories in 1+1 dimensions, including nonlinear sigma models, gauged WZW models, LandauGinzburg models, and linear sigma models. The parity anomaly and its cancellation play important roles in many
The Boundedness of All Products of a Pair of Matrices is Undecidable
, 2000
"... We show that the boundedness of the set of all products of a given pair Sigma of rational matrices is undecidable. Furthermore, we show that the joint (or generalized) spectral radius #(#) is not computable because testing whether #(#)61 is an undecidable problem. As a consequence, the robust stabil ..."
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Cited by 68 (13 self)
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We show that the boundedness of the set of all products of a given pair Sigma of rational matrices is undecidable. Furthermore, we show that the joint (or generalized) spectral radius #(#) is not computable because testing whether #(#)61 is an undecidable problem. As a consequence, the robust
jprecj\Sigma
"... > w(S) = \Sigma j2S w j w 2 (S) = \Sigma j2S w 2 j 2 LP Formulations We present here several formulations of our problem. 2.1 Linear Ordering Formulation (Potts, 1980) For each pair of jobs i and j we have a f0; 1gvariable ffi ij such that ffi ij = ( 1 i is scheduled before j 0 otherwi ..."
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> w(S) = \Sigma j2S w j w 2 (S) = \Sigma j2S w 2 j 2 LP Formulations We present here several formulations of our problem. 2.1 Linear Ordering Formulation (Potts, 1980) For each pair of jobs i and j we have a f0; 1gvariable ffi ij such that ffi ij = ( 1 i is scheduled before j 0
Topological sigmamodels with Hflux and twisted generalized complex manifolds
, 2008
"... We study the topological sector of N = 2 sigmamodels with Hflux. It has been known for a long time that the targetspace geometry of these theories is not Kähler and can be described in terms of a pair of complex structures, which do not commute, in general, and are parallel with respect to two di ..."
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Cited by 88 (4 self)
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We study the topological sector of N = 2 sigmamodels with Hflux. It has been known for a long time that the targetspace geometry of these theories is not Kähler and can be described in terms of a pair of complex structures, which do not commute, in general, and are parallel with respect to two
Homologous pairs of regulatory proteins control activity of Bacillus subtilis transcription factor sigma(b) in response to environmental stress
 J
, 1996
"... Homologous pairs of regulatory proteins control activity of Bacillus subtilis transcription factor sigma(b) in response to environmental stress. ..."
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Cited by 43 (6 self)
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Homologous pairs of regulatory proteins control activity of Bacillus subtilis transcription factor sigma(b) in response to environmental stress.
On provably disjoint NPpairs
 ELECTRONIC COLLOQUIUM ON COMPUTATIONAL COMPLEXITY
, 1994
"... In this paper we study the pairs (U; V ) of disjoint NPsets representable in a theory T of Bounded Arithmetic in the sense that T proves U " V = ;. For a large variety of theories T we exhibit a natural disjoint NPpair which is complete for the class of disjoint NPpairs representable in T ..."
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Cited by 41 (2 self)
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In this paper we study the pairs (U; V ) of disjoint NPsets representable in a theory T of Bounded Arithmetic in the sense that T proves U " V = ;. For a large variety of theories T we exhibit a natural disjoint NPpair which is complete for the class of disjoint NPpairs representable
An elementary proof of the JohnsonLindenstrauss Lemma
, 1999
"... The JohnsonLindenstrauss lemma shows that a set of n points in high dimensional Euclidean space can be mapped down into an O(log n=ffl 2 ) dimensional Euclidean space such that the distance between any two points changes by only a factor of (1 \Sigma ffl). In this note, we prove this lemma using ..."
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Cited by 152 (1 self)
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that any n point set in Euclidean space could be embedded in O(log n=ffl 2 ) dimensions without distorting the distances between any pair of points by more than a factor of (1 \Sigma ffl), for any 0 ! ffl ! 1. Recently, this lemma has found several applications, including Lipschitz embeddings of graphs
Coisotropic submanifolds in Poisson geometry and branes in the Poisson sigma model
"... Abstract. General boundary conditions (“branes”) for the Poisson sigma model are studied. They turn out to be labeled by coisotropic submanifolds of the given Poisson manifold. The role played by these boundary conditions both at the classical and at the perturbative quantum level is discussed. It t ..."
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Cited by 63 (10 self)
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Abstract. General boundary conditions (“branes”) for the Poisson sigma model are studied. They turn out to be labeled by coisotropic submanifolds of the given Poisson manifold. The role played by these boundary conditions both at the classical and at the perturbative quantum level is discussed
Sigma Models and Minimal Surfaces
, 2008
"... The correspondance is established between the sigma models, the minimal surfaces and the MongeAmpére equation. The LaxPairs of the minimality condition of the minimal surfaces and the MongeAmpére equations are given. Existance of infinitely many nonlocal conservation laws is shown and some Backlu ..."
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The correspondance is established between the sigma models, the minimal surfaces and the MongeAmpére equation. The LaxPairs of the minimality condition of the minimal surfaces and the MongeAmpére equations are given. Existance of infinitely many nonlocal conservation laws is shown and some
Results 1  10
of
334