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BOOK EXCERPT:
"November 2012, volume 220, number 1035 (third of 4 numbers)."
Product Details :
Genre |
: Mathematics |
Author |
: Igor Burban |
Publisher |
: American Mathematical Soc. |
Release |
: 2012 |
File |
: 144 Pages |
ISBN-13 |
: 9780821872925 |
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BOOK EXCERPT:
In this paper we introduce the notion of a geometric associative r-matrix attached to a genus one fibration with a section and irreducible fibres. It allows us to study degenerations of solutions of the classical Yang-Baxter equation using the approach of Polishchuk. We also calculate certain solutions of the classical, quantum and associative Yang-Baxter equations obtained from moduli spaces of (semi-)stable vector bundles on Weierstraß cubic curves.
Product Details :
Genre |
: Curves, Elliptic |
Author |
: Igor Burban |
Publisher |
: |
Release |
: 2012 |
File |
: 131 Pages |
ISBN-13 |
: 082189207X |
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BOOK EXCERPT:
In this monograph the author investigates divergence-form elliptic partial differential equations in two-dimensional Lipschitz domains whose coefficient matrices have small (but possibly nonzero) imaginary parts and depend only on one of the two coordinates. He shows that for such operators, the Dirichlet problem with boundary data in $L^q$ can be solved for $q1$ small enough, and provide an endpoint result at $p=1$.
Product Details :
Genre |
: Mathematics |
Author |
: Ariel Barton |
Publisher |
: American Mathematical Soc. |
Release |
: 2013-04-22 |
File |
: 120 Pages |
ISBN-13 |
: 9780821887400 |
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BOOK EXCERPT:
The authors prove that in systems undergoing Hopf bifurcations, the effects of periodic forcing can be amplified by the shearing in the system to create sustained chaotic behavior. Specifically, strange attractors with SRB measures are shown to exist. The analysis is carried out for infinite dimensional systems, and the results are applicable to partial differential equations. Application of the general results to a concrete equation, namely the Brusselator, is given.
Product Details :
Genre |
: Mathematics |
Author |
: Kening Lu |
Publisher |
: American Mathematical Soc. |
Release |
: 2013-06-28 |
File |
: 97 Pages |
ISBN-13 |
: 9780821884843 |
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BOOK EXCERPT:
The authors study the Cauchy problem for the sine-Gordon equation in the semiclassical limit with pure-impulse initial data of sufficient strength to generate both high-frequency rotational motion near the peak of the impulse profile and also high-frequency librational motion in the tails. They show that for small times independent of the semiclassical scaling parameter, both types of motion are accurately described by explicit formulae involving elliptic functions. These formulae demonstrate consistency with predictions of Whitham's formal modulation theory in both the hyperbolic (modulationally stable) and elliptic (modulationally unstable) cases.
Product Details :
Genre |
: Mathematics |
Author |
: Robert J. Buckingham |
Publisher |
: American Mathematical Soc. |
Release |
: 2013-08-23 |
File |
: 148 Pages |
ISBN-13 |
: 9780821885451 |
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BOOK EXCERPT:
The authors give an adelic treatment of the Kuznetsov trace formula as a relative trace formula on $\operatorname{GL}(2)$ over $\mathbf{Q}$. The result is a variant which incorporates a Hecke eigenvalue in addition to two Fourier coefficients on the spectral side. The authors include a proof of a Weil bound for the generalized twisted Kloosterman sums which arise on the geometric side. As an application, they show that the Hecke eigenvalues of Maass forms at a fixed prime, when weighted as in the Kuznetsov formula, become equidistributed relative to the Sato-Tate measure in the limit as the level goes to infinity.
Product Details :
Genre |
: Mathematics |
Author |
: Andrew Knightly |
Publisher |
: American Mathematical Soc. |
Release |
: 2013-06-28 |
File |
: 144 Pages |
ISBN-13 |
: 9780821887448 |
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BOOK EXCERPT:
This monograph contains a study of the global Cauchy problem for the Yang-Mills equations on $(6+1)$ and higher dimensional Minkowski space, when the initial data sets are small in the critical gauge covariant Sobolev space $\dot{H}_A^{(n-4)/{2}}$. Regularity is obtained through a certain ``microlocal geometric renormalization'' of the equations which is implemented via a family of approximate null Cronstrom gauge transformations. The argument is then reduced to controlling some degenerate elliptic equations in high index and non-isotropic $L^p$ spaces, and also proving some bilinear estimates in specially constructed square-function spaces.
Product Details :
Genre |
: Mathematics |
Author |
: Joachim Krieger |
Publisher |
: American Mathematical Soc. |
Release |
: 2013-04-22 |
File |
: 111 Pages |
ISBN-13 |
: 9780821844892 |
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BOOK EXCERPT:
In this article the authors develop a new method to deal with maximal Cohen–Macaulay modules over non–isolated surface singularities. In particular, they give a negative answer on an old question of Schreyer about surface singularities with only countably many indecomposable maximal Cohen–Macaulay modules. Next, the authors prove that the degenerate cusp singularities have tame Cohen–Macaulay representation type. The authors' approach is illustrated on the case of k as well as several other rings. This study of maximal Cohen–Macaulay modules over non–isolated singularities leads to a new class of problems of linear algebra, which the authors call representations of decorated bunches of chains. They prove that these matrix problems have tame representation type and describe the underlying canonical forms.
Product Details :
Genre |
: Mathematics |
Author |
: Igor Burban |
Publisher |
: American Mathematical Soc. |
Release |
: 2017-07-13 |
File |
: 134 Pages |
ISBN-13 |
: 9781470425371 |
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BOOK EXCERPT:
Some time ago, the first and third authors proposed two relative trace formulas to prove generalizations of Böcherer's conjecture on the central critical values of the degree four -functions for , and proved the relevant fundamental lemmas. Recently, the first and second authors proposed an alternative third relative trace formula to approach the same problem and proved the relevant fundamental lemma. In this paper the authors extend the latter fundamental lemma and the first of the former fundamental lemmas to the full Hecke algebra. The fundamental lemma is an equality of two local relative orbital integrals. In order to show that they are equal, the authors compute them explicitly for certain bases of the Hecke algebra and deduce the matching.
Product Details :
Genre |
: Mathematics |
Author |
: Masaaki Furusawa |
Publisher |
: American Mathematical Soc. |
Release |
: 2013-08-23 |
File |
: 150 Pages |
ISBN-13 |
: 9780821887424 |
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BOOK EXCERPT:
This text provides a new proof of Glauberman's Z*-Theorem under the additional hypothesis that the simple groups involved in the centraliser of an isolated involution are known simple groups.
Product Details :
Genre |
: Mathematics |
Author |
: Rebecca Waldecker |
Publisher |
: American Mathematical Soc. |
Release |
: 2013-10-23 |
File |
: 164 Pages |
ISBN-13 |
: 9780821888032 |