-deformation of the Virasoro algebra and lattice conformal theories
-deformed KP hierarchy and -deformed constrained KP hierarchy.
QED on a lattice : I. Infrared asymptotic freedom for bounded fields
Quadratic and homogeneous Hamilton-Poisson systems on .
Quadratic differentials with prescribed singularities and pseudo-convex-Anosov diffeomorphisms.
Quadratic regular reversal maps.
Quadratic systems equivalent by domains to a linear one: global phase portraits.
Quadratic vector fields in the plane have a finite number of limit cycles
Quantification géométrique et réduction symplectique
Quantitative recurrence in two-dimensional extended processes
Under some mild condition, a random walk in the plane is recurrent. In particular each trajectory is dense, and a natural question is how much time one needs to approach a given small neighbourhood of the origin. We address this question in the case of some extended dynamical systems similar to planar random walks, including ℤ2-extension of mixing subshifts of finite type. We define a pointwise recurrence rate and relate it to the dimension of the process, and establish a result of convergence in...
Quantization Dimension Function and Ergodic Measure with Bounded Distortion
The quantization dimension function for the image measure of a shift-invariant ergodic measure with bounded distortion on a self-conformal set is determined, and its relationship to the temperature function of the thermodynamic formalism arising in multifractal analysis is established.
Quantization of the orientation preserving automorphisms of the torus
Quantum cohomology of flag manifolds and quantum Toda lattices.
Quantum curve in -oscillator model.
Quantum deformations and superintegrable motions on spaces with variable curvature.
Quantum dynamical entropy and an algorithm by Gene Golub.
Quantum integrable systems
Quantum relativistic Toda chain.
Quantum super-integrable systems as exactly solvable models.
Quasiclassical limit of KP hierarchy, -symmetries, and free fermions