The Dirichlet Problem for Parabolic Operators with Singular Drift Terms

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Publisher : American Mathematical Soc.
ISBN 13 : 0821826840
Total Pages : 129 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis The Dirichlet Problem for Parabolic Operators with Singular Drift Terms by : Steve Hofmann

Download or read book The Dirichlet Problem for Parabolic Operators with Singular Drift Terms written by Steve Hofmann and published by American Mathematical Soc.. This book was released on 2001 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: This memoir considers the Dirichlet problem for parabolic operators in a half space with singular drift terms. Chapter I begins the study of a parabolic PDE modelled on the pullback of the heat equation in certain time varying domains considered by Lewis-Murray and Hofmann-Lewis. Chapter II obtains mutual absolute continuity of parabolic measure and Lebesgue measure on the boundary of this halfspace and also that the $L DEGREESq(R DEGREESn)$ Dirichlet problem for these PDEs has a solution when $q$ is large enough. Chapter III proves an analogue of a theorem of Fefferman, Kenig, and Pipher for certain parabolic PDEs with singular drift terms. Each of the chapters that comprise this memoir has its own numbering system and list

Smooth Molecular Decompositions of Functions and Singular Integral Operators

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Publisher : American Mathematical Soc.
ISBN 13 : 0821827723
Total Pages : 89 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Smooth Molecular Decompositions of Functions and Singular Integral Operators by : John E. Gilbert

Download or read book Smooth Molecular Decompositions of Functions and Singular Integral Operators written by John E. Gilbert and published by American Mathematical Soc.. This book was released on 2002 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: Under minimal assumptions on a function $\psi$ the authors obtain wavelet-type frames of the form $\psi_{j, k}(x) = r DEGREES{(1/2)n j} \psi(r DEGREESj x - sk), j \in \integer, k \in \integer DEGREESn, $ for some $r > 1$ and $s > 0$. This collection is shown to be a frame for a scale of Triebel-Lizorkin spaces (which includes Lebesgue, Sobolev and Hardy spaces) and the reproducing formula converges in norm as well as pointwise a.e. The construction follows from a characterization of those operators which are bounded on a space of smooth molecules. This characterization also allows us to decompose a broad range of singular integral operators in ter

Sub-Laplacians with Drift on Lie Groups of Polynomial Volume Growth

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Publisher : American Mathematical Soc.
ISBN 13 : 0821827642
Total Pages : 119 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Sub-Laplacians with Drift on Lie Groups of Polynomial Volume Growth by : Georgios K. Alexopoulos

Download or read book Sub-Laplacians with Drift on Lie Groups of Polynomial Volume Growth written by Georgios K. Alexopoulos and published by American Mathematical Soc.. This book was released on 2002 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work is intended for graduate students and research mathematicians interested in topological groups, Lie groups, and harmonic analysis.

Approximation and Entropy Numbers of Volterra Operators with Application to Brownian Motion

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Publisher : American Mathematical Soc.
ISBN 13 : 082182791X
Total Pages : 103 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Approximation and Entropy Numbers of Volterra Operators with Application to Brownian Motion by : Mikhail Anatolʹevich Lifshit︠s︡

Download or read book Approximation and Entropy Numbers of Volterra Operators with Application to Brownian Motion written by Mikhail Anatolʹevich Lifshit︠s︡ and published by American Mathematical Soc.. This book was released on 2002 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text considers a specific Volterra integral operator and investigates its degree of compactness in terms of properties of certain kernel functions. In particular, under certain optimal integrability conditions the entropy numbers $e_n(T_{\rho, \psi})$ satisfy $c_1\norm{\rho\psi}_r0$.

Elliptic Partial Differential Operators and Symplectic Algebra

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Publisher : American Mathematical Soc.
ISBN 13 : 0821832352
Total Pages : 130 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Elliptic Partial Differential Operators and Symplectic Algebra by : William Norrie Everitt

Download or read book Elliptic Partial Differential Operators and Symplectic Algebra written by William Norrie Everitt and published by American Mathematical Soc.. This book was released on 2003 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Singular Quasilinearity and Higher Eigenvalues

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Publisher : American Mathematical Soc.
ISBN 13 : 0821827170
Total Pages : 191 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Singular Quasilinearity and Higher Eigenvalues by : Victor Lenard Shapiro

Download or read book Singular Quasilinearity and Higher Eigenvalues written by Victor Lenard Shapiro and published by American Mathematical Soc.. This book was released on 2001 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is intended for graduate students and research mathematicians interested in partial differential equations.

Basic Global Relative Invariants for Homogeneous Linear Differential Equations

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Publisher : American Mathematical Soc.
ISBN 13 : 0821827812
Total Pages : 223 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Basic Global Relative Invariants for Homogeneous Linear Differential Equations by : Roger Chalkley

Download or read book Basic Global Relative Invariants for Homogeneous Linear Differential Equations written by Roger Chalkley and published by American Mathematical Soc.. This book was released on 2002 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Spectral Decomposition of a Covering of $GL(r)$: the Borel case

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Publisher : American Mathematical Soc.
ISBN 13 : 0821827758
Total Pages : 79 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Spectral Decomposition of a Covering of $GL(r)$: the Borel case by : Heng Sun

Download or read book Spectral Decomposition of a Covering of $GL(r)$: the Borel case written by Heng Sun and published by American Mathematical Soc.. This book was released on 2002 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 ${\bf A}$

Almost Commuting Elements in Compact Lie Groups

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Publisher : American Mathematical Soc.
ISBN 13 : 0821827928
Total Pages : 153 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Almost Commuting Elements in Compact Lie Groups by : Armand Borel

Download or read book Almost Commuting Elements in Compact Lie Groups written by Armand Borel and published by American Mathematical Soc.. This book was released on 2002 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text describes the components of the moduli space of conjugacy classes of commuting pairs and triples of elements in a compact Lie group. This description is in the extended Dynkin diagram of the simply connected cover, together with the co-root integers and the action of the fundamental group. In the case of three commuting elements, we compute Chern-Simons invariants associated to the corresponding flat bundles over the three-torus, and verify a conjecture of Witten which reveals a surprising symmetry involving the Chern-Simons invariants and the dimensions of the components of the moduli space.

Some Generalized Kac-Moody Algebras with Known Root Multiplicities

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Publisher : American Mathematical Soc.
ISBN 13 : 0821828886
Total Pages : 137 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Some Generalized Kac-Moody Algebras with Known Root Multiplicities by : Peter Niemann

Download or read book Some Generalized Kac-Moody Algebras with Known Root Multiplicities written by Peter Niemann and published by American Mathematical Soc.. This book was released on 2002 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 $AE_3$.

Derived $\ell $-Adic Categories for Algebraic Stacks

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Publisher : American Mathematical Soc.
ISBN 13 : 0821829297
Total Pages : 110 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Derived $\ell $-Adic Categories for Algebraic Stacks by : Kai Behrend

Download or read book Derived $\ell $-Adic Categories for Algebraic Stacks written by Kai Behrend and published by American Mathematical Soc.. This book was released on 2003 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text is intended for graduate students and research mathematicians interested in algebraic geometry, category theory and homological algebra.

The Moduli Space of $N=1$ Superspheres with Tubes and the Sewing Operation

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Publisher : American Mathematical Soc.
ISBN 13 : 0821832603
Total Pages : 150 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis The Moduli Space of $N=1$ Superspheres with Tubes and the Sewing Operation by : Katrina Barron

Download or read book The Moduli Space of $N=1$ Superspheres with Tubes and the Sewing Operation written by Katrina Barron and published by American Mathematical Soc.. This book was released on 2003 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: Within the framework of complex supergeometry and motivated by two-dimensional genus-zero holomorphic $N = 1$ superconformal field theory, this book defines the moduli space of $N=1$ genus-zero super-Riemann surfaces with oriented and ordered half-infinite tubes, modulo superconformal equivalence.

Homotopy Theory of the Suspensions of the Projective Plane

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Publisher : American Mathematical Soc.
ISBN 13 : 0821832395
Total Pages : 148 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Homotopy Theory of the Suspensions of the Projective Plane by : Jie Wu

Download or read book Homotopy Theory of the Suspensions of the Projective Plane written by Jie Wu and published by American Mathematical Soc.. This book was released on 2003 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Investigates the homotopy theory of the suspensions of the real projective plane. This book computes the homotopy groups up to certain range. It also studies the decompositions of the self smashes and the loop spaces with some applications to the Stiefel manifolds.

Generalized Whittaker Functions on $SU(2,2)$ with Respect to the Siegel Parabolic Subgroup

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Publisher : American Mathematical Soc.
ISBN 13 : 0821827634
Total Pages : 130 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Generalized Whittaker Functions on $SU(2,2)$ with Respect to the Siegel Parabolic Subgroup by : Yasuro Gon

Download or read book Generalized Whittaker Functions on $SU(2,2)$ with Respect to the Siegel Parabolic Subgroup written by Yasuro Gon and published by American Mathematical Soc.. This book was released on 2002 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Obtains an explicit formula for generalized Whittaker functions and multiplicity one theorem for all discrete series representations of $SU(2,2)$.

$q$-Difference Operators, Orthogonal Polynomials, and Symmetric Expansions

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Publisher : American Mathematical Soc.
ISBN 13 : 082182774X
Total Pages : 73 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis $q$-Difference Operators, Orthogonal Polynomials, and Symmetric Expansions by : Douglas Bowman

Download or read book $q$-Difference Operators, Orthogonal Polynomials, and Symmetric Expansions written by Douglas Bowman and published by American Mathematical Soc.. This book was released on 2002 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: The author explores ramifications and extensions of a $q$-difference operator method first used by L.J. Rogers for deriving relationships between special functions involving certain fundamental $q$-symmetric polynomials. In special cases these symmetric polynomials reduce to well-known classes of orthogonal polynomials. A number of basic properties of these polynomials follow from this approach. This leads naturally to the evaluation of the Askey-Wilson integral and generalizations. Expansions of certain generalized basic hypergeometric functions in terms of the symmetric polynomials are also found. This provides a quick route to understanding the group structure generated by iterating the two-term transformations of these functions. Some infrastructure is also laid for more general investigations in the future

Mutual Invadability Implies Coexistence in Spatial Models

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Publisher : American Mathematical Soc.
ISBN 13 : 0821827685
Total Pages : 133 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Mutual Invadability Implies Coexistence in Spatial Models by : Richard Durrett

Download or read book Mutual Invadability Implies Coexistence in Spatial Models written by Richard Durrett and published by American Mathematical Soc.. This book was released on 2002 with total page 133 pages. Available in PDF, EPUB and Kindle. Book excerpt: In (1994) Durrett and Levin proposed that the equilibrium behavior of stochastic spatial models could be determined from properties of the solution of the mean field ordinary differential equation (ODE) that is obtained by pretending that all sites are always independent. Here we prove a general result in support of that picture. We give a condition on an ordinary differential equation which implies that densities stay bounded away from 0 in the associated reaction-diffusion equation, and that coexistence occurs in the stochastic spatial model with fast stirring. Then using biologists' notion of invadability as a guide, we show how this condition can be checked in a wide variety of examples that involve two or three species: epidemics, diploid genetics models, predator-prey systems, and various competition models.

On the Classification of Polish Metric Spaces Up to Isometry

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Publisher : American Mathematical Soc.
ISBN 13 : 0821831909
Total Pages : 93 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis On the Classification of Polish Metric Spaces Up to Isometry by : Su Gao

Download or read book On the Classification of Polish Metric Spaces Up to Isometry written by Su Gao and published by American Mathematical Soc.. This book was released on 2003 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: