Invariant varieties of periodic points for the discrete Euler top.
Invariante Variationsprobleme
Inverse problem of the classical calculus of variations
Investigation of a spatial double pendulum: an engineering approach.
Isomorphism and Hamilton representation of some nonholonomic systems.
Isospectrality for quantum toric integrable systems
We give a full description of the semiclassical spectral theory of quantum toric integrable systems using microlocal analysis for Toeplitz operators. This allows us to settle affirmatively the isospectral problem for quantum toric integrable systems: the semiclassical joint spectrum of the system, given by a sequence of commuting Toeplitz operators on a sequence of Hilbert spaces, determines the classical integrable system given by the symplectic manifold and commuting Hamiltonians. This type of...
Jet bundle geometry, dynamical connections, and the inverse problem of lagrangian mechanics
Jordan obstruction to the integrability of Hamiltonian systems with homogeneous potentials
In this paper, we consider the natural complex Hamiltonian systems with homogeneous potential , , of degree . The known results of Morales and Ramis give necessary conditions for the complete integrability of such systems. These conditions are expressed in terms of the eigenvalues of the Hessian matrix calculated at a non-zero point , such that . The main aim of this paper is to show that there are other obstructions for the integrability which appear if the matrix is not diagonalizable....
Jumping nonlinearities and mathematical models of suspension bridge
K otázce proměnlivosti parametrů únosnosti konstrukcí
Kam kráčí výpočtová mechanika?
KAM Tori and Quantum Birkhoff Normal Forms
This talk is concerned with the Kolmogorov-Arnold-Moser (KAM) theorem in Gevrey classes for analytic hamiltonians, the effective stability around the corresponding KAM tori, and the semi-classical asymptotics for Schrödinger operators with exponentially small error terms. Given a real analytic Hamiltonian close to a completely integrable one and a suitable Cantor set defined by a Diophantine condition, we find a family , of KAM invariant tori of with frequencies which is Gevrey smooth with...
Kepler-Newton-Coulomb system and Lie matrix spin (incomplete).
Killing's equations in dimension two and systems of finite type
A PDE system is said to be of finite type if all possible derivatives at some order can be solved for in terms lower order derivatives. An algorithm for determining whether a system of finite type has solutions is outlined. The results are then applied to the problem of characterizing symmetric linear connections in two dimensions that possess homogeneous linear and quadratic integrals of motions, that is, solving Killing's equations of degree one and two.
Kinematic geometry of triangles and the study of the three-body problem.
Kinematics of relative motion of test particles in general relativity
Kurven, welche mit den Geschwindigkeiten der -dimensionalen Euklidischen Bewegung des starren Systems verbunden sind.
L2 -characteristic classes of Maslov–Trofimov of hamiltonian systems on the Lie algebra of the upper-triangular matrices
We generalize the construction of Maslov-Trofimov characteristic classes to the case of some G-manifolds and use it to study certain hamiltonian systems.
La loi galiléenne et la dynamique de Huygens
Nous nous proposons de réenvisager sous un éclairage très particulier la naissance bien connue de la dynamique classique à travers les travaux de Galilée, Huygens et Newton. Il s’agit de montrer que si les trajectoires les plus générales décrites par des corps pesants sont les coniques d’Apollonius, c’est parce que le problème de l’établissement des trajectoires a été prémathématisé par des principes généraux sous-jacents à l’étude du lien entre causes et effets. L’introduction de ces présupposés...
La réception de la statique graphique en France durant le dernier tiers du XIXe siècle
Communément associée au nom de l’ingénieur allemand Carl Culmann, la statique graphique a failli, en fait, naître à plusieurs reprises en France. En avance dans un premier temps, les savants et ingénieurs français vont pourtant « rater » l’occasion de devenir les véritables créateurs de cette méthode de calcul graphique. Élaborée pour l’essentiel en dehors de l’Hexagone, la statique graphique va se diffuser en France durant le dernier tiers du xixe siècle comme un produit d’importation et avec un...