Memoirs of the American Mathematical Society
The Memoirs of the AMS series is devoted to the publication of research in all areas of pure and applied mathematics. The Memoirs is designed particularly to publish long papers or groups of cognate papers in book form, and is under the supervision of the Editorial Committee of the AMS journal Transactions of the AMS.
Volume 226 

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Title 
Gromov, Cauchy and causal boundaries for Riemannian, Finslerian and Lorentzian manifolds  J. L. Flores, Departamento de Álgebra, Geometría y Topología, Facultad de Ciencias, Universidad de Málaga, Campus Teatinos, E29071 Málaga, Spain, J. Herrera, Departamento de Álgebra, Geometría y Topología, Facultad de Ciencias, Universidad de Málaga, Campus Teatinos, E29071 Málaga, Spain and M. Sánchez, Departamento de Geometría y Topología, Facultad de Ciencias, Universidad de Granada, Campus Fuentenueva s/n, E18071 Granada, Spain 

Torsors, reductive group schemes and extended affine Lie algebras  Philippe Gille, UMR 8553 du CNRS, Ecole Normale Supérieure, 45 rue d’Ulm, 75005 Paris, France and Arturo Pianzola, Department of Mathematical Sciences, University of Alberta, Edmonton, Alberta T6G 2G1, Canada 

On the regularity of the composition of diffeomorphisms  H. Inci, Institut für Mathematik, Universität Zürich, Winterthurerstrasse 190, CH8057 Zürich, Schwitzerland, T. Kappeler, Institut für Mathematik, Universität Zürich, Winterthurerstrasse 190, CH8057 Zürich, Schwitzerland and P. Topalov, Department of Mathematics, Northeastern University, Boston, Massachusetts 02115 

Isolated involutions in finite groups  Rebecca Waldecker 

On the steady motion of a coupled system solidliquid  Josef Bemelmans, Institut für Mathematik, RWTHAachen, Germany, Giovanni P. Galdi, Department of Mechanical Engineering and Materials Science, University of Pittsburgh, U.S.A and Mads Kyed, Fachbereich Mathematik, Technische Universität Darmstadt, Germany 

Volume 225 

Number 
Title 
The sineGordon equation in the semiclassical limit: Dynamics of fluxon condensates  Robert J. Buckingham, Department of Mathematical Sciences, University of Cincinnati, PO Box 210025, Cincinnati, Ohio 45221 and Peter D. Miller, Department of Mathematics, University of Michigan, East Hall, 530 Church St., Ann Arbor, Michigan 48109 

Manifold Groups are Virtually Residually  Matthias Aschenbrenner, University of California, Los Angeles, California, USA and Stefan Friedl, Mathematisches Institut, Universität zu Köln, Germany 

On central critical values of the degree four functions for : The fundamental lemma. III  Masaaki Furusawa, Department of Mathematics, Graduate School of Science, Osaka City University, Sugimoto 3–3–138, Sumiyoshi, Osaka 558–8585, Japan, Kimball Martin, Department of Mathematics, University of Oklahoma, Norman, Oklahoma 730190315, USA and Joseph A. Shalika, Department of Mathematics, The Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218–2689, USA 

On some aspects of oscillation theory and geometry  Bruno Bianchini, Dipartimento di Matematica Pura ed Applicata, Università degli Studi di Padova, Via Trieste 63, I35121 Padova, Italy, Luciano Mari, Dipartimento di Matematica, Università degli Studi di Milano, Via Saldini 50, I20133 Milano, Italy and Marco Rigoli, Dipartimento di Matematica, Università degli Studi di Milano, Via Saldini 50, I20133 Milano, Italy 

Volume 224 

Number 
Title 
Kuznetsov's trace formula and the Hecke eigenvalues of Maass forms  A. Knightly and C. Li 

Strange Attractors for Periodically Forced Parabolic Equations  Kening Lu, School of Mathematics, Sichuan University, Chengdu, China — and — Department of Mathematics Brigham Young University, Provo, Utah 84602, Qiudong Wang, Department of Mathematics, University of Arizona, Tuscon, Arizona 85721 and LaiSang Young, Courant Institute of Mathematical Sciences, New York University, New York, New York 10012 

Fixed Point Theorems for Plane Continua with Applications  Alexander M. Blokh, Department of Mathematics, University of Alabama at Birmingham, Birmingham, Alabama 352941170, Robbert J. Fokkink, Delft Institute of Applied Mathematics, TU Delft, P.O. Box 5031, 2600 GA Delft, Netherlands, John C. Mayer, Department of Mathematics, University of Alabama at Birmingham, Birmingham, Alabama 352941170, Lex G. Oversteegen, Department of Mathematics, University of Alabama at Birmingham, Birmingham, Alabama 352941170 and E. D. Tymchatyn, Department of Mathematics and Statistics, University of Saskatchewan, Saskatoon, Saskatchewan, Canada S7N 0W0 

Non–cooperative equilibria of Fermi systems with long range interactions  J.B. Bru, Departamento de Matemáticas, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Apartado 644, 48080 Bilbao, Spain, and IKERBASQUE, Basque Foundation for Science, 48011, Bilbao, Spain and W. de Siqueira Pedra, Institut für Mathematik, Universität Mainz, Staudingerweg 9, 55099 Mainz, Germany 

Volume 223 

Number 
Title 
Elliptic Partial Differential Equations with AlmostReal Coefficients  Ariel Barton, School of Mathematics, University of Minnesota, Vincent Hall, 206 Church St. SE, Minneapolis, Minnesota 554550488 

The poset of shapes and branching rules for Schur functions  Thomas Lam, Department of Mathematics, University of Michigan, Ann Arbor, Michigan 48109, Luc Lapointe, Instituto de Matemática Y Física, Universidad de Talca, Casilla 747, Talca, Chile., Jennifer Morse, Department of Mathematics, Drexel University, Philadelphia, Pennsylvania 19104 and Mark Shimozono, Department of Mathematics, Virginia Tech, Blacksburg, Virginia 24061 

The reductive subgroups of  David I. Stewart, New College, Oxford, OX1 3BN 

Characterization and topological rigidity of Nöbeling manifolds  Andrzej Nagórko 

Global regularity for the Yang–Mills equations on high dimensional Minkowski space  Joachim Krieger, Bâtiment des Mathématiques, EPFL, Station 8, CH1015 Lausanne, Switzerland and Jacob Sterbenz, Department of Mathematics, University of California, San Diego, La Jolla, California 920930112 

Volume 222 

Number 
Title 
The shape of congruence lattices  Keith A. Kearnes, Department of Mathematics, University of Colorado, Boulder, Colorado 803090395 and Emil W. Kiss, Loránd Eötvös University, Department of Algebra and Number Theory, 1117 Budapest, Pázmány Péter sétány 1/c, Hungary 

A study of singularities on rational curves via syzygies  David Cox, Department of Mathematics, Amherst College, Amherst, Massachusetts 010025000, Andrew R. Kustin, Mathematics Department, University of South Carolina, Columbia, South Carolina 29208, Claudia Polini, Mathematics Department, University of Notre Dame, Notre Dame, Indiana 46556 and Bernd Ulrich, Department of Mathematics, Purdue University, West Lafayette, Indiana 47907 

A MutationSelection Model with Recombination for General Genotypes  Steven N. Evans, Department of Statistics, 367 Evans Hall, University of California, Berkeley, California 947203860, David Steinsaltz, Department of Statistics, 1 South Parks Road, Oxford, OX1 3TG, United Kingdom and Kenneth W. Wachter, Department of Demography, 2232 Piedmont Avenue, University of California, Berkeley, CA 947202120 

Pseudodifferential operators with discontinuous symbols: Widom's Conjecture  A. V. Sobolev, Department of Mathematics, University College London, Gower Street, London, WC1E 6BT UK 

Character identities in the twisted endoscopy of real reductive groups  Paul Mezo 

Volume 221 

Number 
Title 
The regularity of general parabolic systems with degenerate diffusion  Verena Bögelein, Verena Bögelein, Department Mathematik, Universität Erlangen–Nürnberg, Cauerstrasse 11, 91058 Erlangen, Germany, Frank Duzaar, Frank Duzaar, Department Mathematik, Universität Erlangen–Nürnberg, Cauerstrasse 11, 91058 Erlangen, Germany and Giuseppe Mingione, Giuseppe Mingione, Dipartimento di Matematica, Università di Parma, Viale Usberti 53/a, Campus, 43100 Parma, Italy 

The KohnSham equation for deformed crystals  Weinan E, Department of Mathematics and Program in Applied and Computational Mathematics, Princeton University, Princeton, New Jersey 08544 and Jianfeng Lu, Department of Mathematics, Courant Institute of Mathematical Sciences, New York University, New York, New York 10012 

Wave Front Set of Solutions to Sums of Squares of Vector Fields  Paolo Albano, Dipartimento di Matematica, Università di Bologna, Piazza di Porta San Donato 5, 40127 Bologna, Italy and Antonio Bove, Dipartimento di Matematica, Università di Bologna, Piazza di Porta San Donato 5, 40127 Bologna, Italy 

Potential Wadge classes  Dominique Lecomte, Université Paris 6, Institut de Mathématiques de Jussieu, Projet Analyse Fonctionnelle, Couloir 1626, 4ème étage, Case 247, 4, place Jussieu, 75 252 Paris Cedex 05, France 

Zeta functions for twodimensional shifts of finite type  JungChao Ban, Department of Applied Mathematics, National Dong Hwa University, Hualien 97401, Taiwan., WenGuei Hu, Department of Applied Mathematics, National Chiao Tung University, Hsinchu 300, Taiwan., SongSun Lin, Department of Applied Mathematics, National Chiao Tung University, Hsinchu 300, Taiwan. and YinHeng Lin, Department of Mathematics, National Central University, ChungLi 32054, Taiwan. 