A Geometric Setting for Hamiltonian Perturbation Theory PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download A Geometric Setting for Hamiltonian Perturbation Theory PDF full book. Access full book title A Geometric Setting for Hamiltonian Perturbation Theory by Anthony D. Blaom. Download full books in PDF and EPUB format.
Author: Anthony D. Blaom Publisher: American Mathematical Soc. ISBN: 0821827200 Category : Mathematics Languages : en Pages : 137
Book Description
In this text, the perturbation theory of non-commutatively integrable systems is revisited from the point of view of non-Abelian symmetry groups. Using a co-ordinate system intrinsic to the geometry of the symmetry, the book generalizes and geometrizes well-known estimates of Nekhoroshev (1977), in a class of systems having almost $G$-invariant Hamiltonians. These estimates are shown to have a natural interpretation in terms of momentum maps and co-adjoint orbits. The geometric framework adopted is described explicitly in examples, including the Euler-Poinsot rigid body.
Author: Anthony D. Blaom Publisher: American Mathematical Soc. ISBN: 0821827200 Category : Mathematics Languages : en Pages : 137
Book Description
In this text, the perturbation theory of non-commutatively integrable systems is revisited from the point of view of non-Abelian symmetry groups. Using a co-ordinate system intrinsic to the geometry of the symmetry, the book generalizes and geometrizes well-known estimates of Nekhoroshev (1977), in a class of systems having almost $G$-invariant Hamiltonians. These estimates are shown to have a natural interpretation in terms of momentum maps and co-adjoint orbits. The geometric framework adopted is described explicitly in examples, including the Euler-Poinsot rigid body.
Author: William Norrie Everitt Publisher: American Mathematical Soc. ISBN: 0821832352 Category : Mathematics Languages : en Pages : 130
Book Description
This investigation introduces a new description and classification for the set of all self-adjoint operators (not just those defined by differential boundary conditions) which are generated by a linear elliptic partial differential expression $A(\mathbf{x}, D)=\sum_{0\, \leq\, \left s\right \, \leq\,2m}a_{s} (\mathbf{x})D DEGREES{s}\;\text{for all}\;\mathbf{x}\in\Omega$ in a region $\Omega$, with compact closure $\overline{\Omega}$ and $C DEGREES{\infty }$-smooth boundary $\partial\Omega$, in Euclidean space $\mathbb{E} DEGREES{r}$ $(r\geq2).$ The order $2m\geq2$ and the spatial dimensio
Author: Roger Chalkley Publisher: American Mathematical Soc. ISBN: 0821827812 Category : Mathematics Languages : en Pages : 223
Book Description
Given any fixed integer $m \ge 3$, the author presents simple formulas for $m - 2$ algebraically independent polynomials over $\mathbb{Q}$ having the remarkable property, with respect to transformations of homogeneous linear differential equations of order $m$, that each polynomial is both a semi-invariant of the first kind (with respect to changes of the dependent variable) and a semi-invariant of the second kind (with respect to changes of the independent variable). These relative invariants are suitable for global studies in several different contexts and do not require Laguerre-Forsyth reductions for their evaluation. In contrast, all of the general formulas for basic relative invariants that have been proposed by other researchers during the last 113 years are merely local ones that are either much too complicated or require a Laguerre-Forsyth reduction for each evaluation.
Author: Heng Sun Publisher: American Mathematical Soc. ISBN: 0821827758 Category : Mathematics Languages : en Pages : 79
Book Description
Let $F$ be a number field and ${\bf A}$ the ring of adeles over $F$. Suppose $\overline{G({\bf A})}$ is a metaplectic cover of $G({\bf A})=GL(r, {\bf A})$ which is given by the $n$-th Hilbert symbol on ${\bf A}$
Author: Peter Niemann Publisher: American Mathematical Soc. ISBN: 0821828886 Category : Mathematics Languages : en Pages : 137
Book Description
Starting from Borcherds' fake monster Lie algebra, this text construct a sequence of six generalized Kac-Moody algebras whose denominator formulas, root systems and all root multiplicities can be described explicitly. The root systems decompose space into convex holes, of finite and affine type, similar to the situation in the case of the Leech lattice. As a corollary, we obtain strong upper bounds for the root multiplicities of a number of hyperbolic Lie algebras, including $AE_3$.
Author: Kai Behrend Publisher: American Mathematical Soc. ISBN: 0821829297 Category : Mathematics Languages : en Pages : 110
Book Description
This text is intended for graduate students and research mathematicians interested in algebraic geometry, category theory and homological algebra.
Author: Francisco Santos Publisher: American Mathematical Soc. ISBN: 0821827693 Category : Mathematics Languages : en Pages : 95
Book Description
We consider the concept of triangulation of an oriented matroid. We provide a definition which generalizes the previous ones by Billera-Munson and by Anderson and which specializes to the usual notion of triangulation (or simplicial fan) in the realizable case. Then we study the relation existing between triangulations of an oriented matroid $\mathcal{M}$ and extensions of its dual $\mathcal{M}^*$, via the so-called lifting triangulations. We show that this duality behaves particularly well in the class of Lawrence matroid polytopes. In particular, that the extension space conjecture for realizable oriented matroids is equivalent to the restriction to Lawrence polytopes of the Generalized Baues problem for subdivisions of polytopes. We finish by showing examples and a characterization of lifting triangulations.
Author: Robert M. Guralnick Publisher: American Mathematical Soc. ISBN: 0821832883 Category : Mathematics Languages : en Pages : 96
Book Description
Investigates the analogous question for rational functions. This book describes the Galois theoretic translation, based on Chebotarev's density theorem, leads to a certain property of permutation groups, called exceptionality.
Author: Anthony D. Blaom
Author: Anthony D. Blaom
Author: William Norrie Everitt
Author: Roger Chalkley
Author: Heng Sun
Author: Reinhard Höpfner
Author: Peter Niemann
Author: Su Gao
Author: Kai Behrend
Author: Francisco Santos
Author: Robert M. Guralnick