AMS eBook CollectionsOne of the world's most respected mathematical collections, available in digital format for your library or institution
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 250 

Number  Title 

MEMO/1193  Medial/Skeletal Linking Structures for MultiRegion Configurations  James Damon, Department of Mathematics, University of North Carolina, Chapel Hill, North Carolina 275993250 and Ellen Gasparovic, Department of Mathematics, Duke University, Box 90320, Durham, North Carolina 277080320 
MEMO/1192  Maximal abelian sets of roots  R. Lawther, Department of Pure Mathematics and Mathematical Statistics, Centre for Mathematical Sciences, Cambridge University, Wilberforce Road, Cambridge CB3 0WB 
MEMO/1191  Knot invariants and higher representation theory  Ben Webster, Department of Mathematics, University of Virginia, Charlottesville, Virginia 
MEMO/1190  The Planar Cubic Cayley Graphs  Agelos Georgakopoulos, Mathematics Institute, University of Warwick, CV4 7AL, United Kingdom 
MEMO/1189  The Stability of Cylindrical Pendant Drops  John McCuan 
MEMO/1188  Entire solutions for bistable lattice differential equations with obstacles  A. Hoffman, Franklin W. Olin College of Engineering, 1000 Olin Way, Needham, Massachusetts 02492, H. J. Hupkes, Mathematisch Instituut, Universiteit Leiden, P.O. Box 9512, 2300 RA Leiden, The Netherlands and E. S. Van Vleck, Department of Mathematics, University of Kansas, 1460 Jayhawk Boulevard, Lawrence, Kansas 66045 
Volume 249 

Number  Title 
MEMO/1187  Induction, Bounding, Weak Combinatorial Principles, and the Homogeneous Model Theorem  Denis R. Hirschfeldt, Department of Mathematics, University of Chicago, 5734 S. University Ave., Chicago, Illinois 60637, Karen Lange, Department of Mathematics, Wellesley College, 106 Central St., Wellesley, Massachusetts 02481 and Richard A. Shore, Department of Mathematics, Malott Hall, Cornell University, Ithaca, New York 14853 
MEMO/1186  Property $(T)$ for Groups Graded by Root Systems  Mikhail Ershov, University of Virginia, Andrei JaikinZapirain, Departamento de Matemáticas Universidad Autónoma de Madrid – and – Instituto de Ciencias Matemáticas CSICUAMUC3MUCM and Martin Kassabov, Cornell University and University of Southampton 
MEMO/1185  Absolute Continuity under Time Shift of Trajectories and Related Stochastic Calculus  JörgUwe Löbus, Matematiska institutionen, Linköpings universitet, Linköping SE581 83, Sverige 
MEMO/1184  On operads, bimodules and analytic functors  Nicola Gambino, School of Mathematics, University of Leeds, Leeds LS2 9JT, United Kingdom and André Joyal, Department de Mathèmatiques, Universitè du Quèbec à Montréal, Case Postale 8888, Succursale CentreVille, Montŕeal (Quèbec) H3C 3P8, Canada 
MEMO/1183  Hypercontractivity in group von Neumann algebras  Marius Junge, Department of Mathematics, University of Illinois at UrbanaChampaign, 1409 W. Green St. Urbana, Illinois, Carlos Palazuelos, Instituto de Ciencias Matemáticas, CSICUAMUC3MUCM, C/ Nicolás Cabrera 1315. Madrid. Spain, Javier Parcet, Instituto de Ciencias Matemáticas, CSICUAMUC3MUCM, C/ Nicolás Cabrera 1315. Madrid. Spain and Mathilde Perrin, Instituto de Ciencias Matemáticas, CSICUAMUC3MUCM, C/ Nicolás Cabrera 1315. Madrid. Spain 
MEMO/1182  Fundamental solutions and local solvability for nonsmooth Hörmander’s operators  Marco Bramanti, Dipartimento di Matematica, Politecnico di Milano, Via Bonardi 9, 20133 Milano, Italy, Luca Brandolini, Dipartimento di Ingegneria Gestionale, dell’Informazione e della Produzione, Università di Bergamo, Viale Marconi 5, 24044 Dalmine, Italy, Maria Manfredini, Dipartimento di Matematica, Università di Bologna, Piazza Porta S. Donato 5, 40126 Bologna, Italy and Marco Pedroni, Dipartimento di Ingegneria Gestionale, dell’Informazione e della Produzione, Università di Bergamo, Viale Marconi 5, 24044 Dalmine, Italy 
MEMO/1181  Optimal Regularity and the Free Boundary in the Parabolic Signorini Problem  Donatella Danielli, Department of Mathematics, Purdue University, West Lafayette, Indiana 47907, Nicola Garofalo, Dipartimento d’Ingegneria Civile e Ambientale (DICEA), Università di Padova, via Trieste 63, 35131 Padova, Italy, Arshak Petrosyan, Department of Mathematics, Purdue University, West Lafayette, Indiana 47907 and Tung To, Department of Mathematics, Purdue University, West Lafayette, Indiana 47907 
MEMO/1180  Needle Decompositions in Riemannian Geometry  Bo’az Klartag, Department of Mathematics, Weizmann Institute of Science, Rehovot 76100 Israel, and School of Mathematical Sciences, Tel Aviv University, Tel Aviv 69978 Israel 
Volume 248 

Number  Title 
MEMO/1179  Applications of Polyfold Theory I: The Polyfolds of Gromov–Witten Theory  H. Hofer, Institute for Advanced Study, USA, K. Wysocki, Penn State University and E. Zehnder, ETHZurich,Switzerland 
MEMO/1178  Maximal Cohen–Macaulay Modules Over Non–Isolated Surface Singularities and Matrix Problems  Igor Burban, Universität zu Köln, Mathematisches Institut, Weyertal 8690, D50931 Köln, Germany and Yuriy Drozd, Institute of Mathematics National Academy of Sciences, Tereschenkivska str. 3, 01004 Kyiv, Ukraine 
MEMO/1177  Special Values of the Hypergeometric Series  Akihito Ebisu, Department of Mathematics, Hokkaido University, Kita 10, Nishi 8, Kitaku, Sapporo, 0600810, Japan 
MEMO/1176  Rationality Problem for Algebraic Tori  Akinari Hoshi, Department of Mathematics, Niigata University, Niigata 9502181, Japan and Aiichi Yamasaki, Department of Mathematics, Kyoto University, Kyoto 6068502, Japan 
MEMO/1175  Locally analytic vectors in representations of locally $p$adic analytic groups  Matthew Emerton 
Volume 247 

Number  Title 
MEMO/1174  The Mathematics of Superoscillations  Yakir Aharonov, Schmid College of Science and Technology, Chapman University, Orange 92866, California, Fabrizio Colombo, Dipartimento di Matematica, Politecnico di Milano, Via Bonardi 9, 20133 Milano, Italy, Irene Sabadini, Dipartimento di Matematica, Politecnico di Milano, Via Bonardi 9, 20133 Milano, Italy, Daniele C. Struppa, Schmid College of Science and Technology, Chapman University, Orange 92866, California and Jeff Tollaksen, Schmid College of Science and Technology, Chapman University, Orange 92866, California 
MEMO/1173  Topologically Protected States in OneDimensional Systems  C. L. Fefferman, Department of Mathematics, Princeton University, Princeton, New Jersey, J. P. LeeThorp, Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York and M. I. Weinstein, Department of Applied Physics and Applied Mathematics and Department of Mathematics, Columbia University, New York, New York 
MEMO/1172  Homology of Normal Chains and Cohomology of Charges  Th. De Pauw, Université Denis Diderot, Institut de Mathématiques de Jussieu, Equipe de Géométrie et Dynamique, Bâtiment Sophie Germain, Case 7012, 75205 Paris Cedex 13, France, R. M. Hardt, Department of Mathematics, Rice University, Houston, Texas 77251 and W. F. Pfeffer, Department of Mathematics, University of California, Davis, California 95616 – and – University of Arizona, Tucson, Arizona 85721 
MEMO/1171  Intersection Local Times, Loop Soups and Permanental Wick Powers  Yves Le Jan, Equipe Probabilités et Statistiques, Université ParisSud, Bâtiment 425, 91405 Orsay Cedex, France, Michael B. Marcus, Department of Mathematics, City College, CUNY, New York, New York 10031 and Jay Rosen, Department of Mathematics, College of Staten Island, CUNY, Staten Island, New York 10314 
MEMO/1170  Direct and inverse scattering at fixed energy for massless charged Dirac fields by KerrNewmande Sitter black holes  Thierry Daudé, Laboratoire AGM, Département de Mathématiques, UMR CNRS 8088, Université de CergyPontoise, 2 Avenue Adolphe Chauvin, 95302 CergyPontoise, France and François Nicoleau, Laboratoire Jean Leray, UMR 6629, Université de Nantes, 2, rue de la Houssinière, BP 92208, 44322 Nantes Cedex 03, France 
MEMO/1169  Quantum cluster algebra structures on quantum nilpotent algebras  K. R. Goodearl, Department of Mathematics, University of California, Santa Barbara, California 93106 and M. T. Yakimov, Department of Mathematics, Louisiana State University, Baton Rouge, Louisiana 70803 
MEMO/1168  Semicrossed products of operator algebras by semigroups  Kenneth R. Davidson, Pure Mathematics Department, University of Waterloo, Waterloo, ON N2L–3G1, Canada, Adam H. Fuller, Mathematics Department, University of NebraskaLincoln, Lincoln, Nebraska 68588–0130 and Evgenios T. A. Kakariadis, Previous: Pure Mathematics Department, University of Waterloo, Waterloo, ON N2L–3G1, Canada \phantom{oo} Previous: Department of Mathematics, BenGurion University of the Negev, Be’er Sheva 84105, Israel \phantom{oo} Current: School of Mathematics and Statistics, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom 
Volume 246 

Number  Title 
MEMO/1167  Birationally rigid Fano threefold hypersurfaces  Ivan Cheltsov, School of Mathematics, The University of Edinburgh, Edinburgh, EH9 3JZ, United Kingdom and Jihun Park, Center for Geometry and Physics, Institute for Basic Science (IBS) 77 Cheongamro, Namgu, Pohang, Gyeongbuk, 790784, Korea – and – Department of Mathematics, POSTECH 77 Cheongamro, Namgu, Pohang, Gyeongbuk, 790784, Korea 
MEMO/1166  New foundations for geometry Two nonadditive languages for arithmetical geometry  M. J. Shai Haran 
MEMO/1165  Exotic cluster structures on $SL_n$: the Cremmer–Gervais case  M. Gekhtman, Department of Mathematics, University of Notre Dame, Notre Dame, Indiana 46556, M. Shapiro, Department of Mathematics, Michigan State University, East Lansing, Michigan 48823 and A. Vainshtein, Department of Mathematics & Department of Computer Science, University of Haifa, Haifa, Mount Carmel 31905, Israel 
MEMO/1164  Oseledec multiplicative ergodic theorem for laminations  ViêtAnh Nguyên, Université ParisSud, Laboratoire de Mathématique, UMR 8628, Bâtiment 425, F91405 Orsay, France 
MEMO/1163  On Dwork’s $p$adic formal congruences theorem and hypergeometric mirror maps  E. Delaygue, Institut Camille Jordan, Université Claude Bernard Lyon 1, 43 boulevard du 11 Novembre 1918, 69622 Villeurbanne cedex, France, T. Rivoal, Institut Fourier, CNRS et Université Grenoble 1, CNRS UMR 5582, 100 rue des maths, BP 74, 38402 St Martin d’Hères cedex, France and J. Roques, Institut Fourier, Université Grenoble 1, CNRS UMR 5582, 100 rue des maths, BP 74, 38402 St Martin d’Hères cedex, France 
MEMO/1162  Abelian Properties of Anick Spaces  Brayton Gray, Department of Mathematics, Statistics and Computer Science, University of Illinois at Chicago, 851 S. Morgan Street, Chicago, Illinois 606077045 
Volume 245 

Number  Title 
MEMO/1161  The Role of Advection in a TwoSpecies Competition Model: A Bifurcation Approach  Isabel Averill, Department of Mathematics, Bryn Mawr College, KingYeung Lam, Department of Mathematics, Ohio State University and Yuan Lou, Institute for Mathematical Sciences, Renmin University of China and Department of Mathematics, Ohio State University 
MEMO/1160 
Classification of actions of discrete Kac algebras on injective factors
 Toshihiko Masuda, Graduate School of Mathematics, Kyushu University, Fukuoka, 8190395 , Japan and Reiji Tomatsu,Department of Mathematics, Hokkaido University, Hokkaido 0600810 , Japan 
MEMO/1159  $L^p$square function estimates on spaces of homogeneous type and on uniformly rectifiable sets  Steve Hofmann, University of Missouri, Columbia, Dorina Mitrea, University of Missouri, Columbia, Marius Mitrea, University of Missouri, Columbia and Andrew J. Morris, University of Missouri, Columbia 
MEMO/1158  Rectifiable measures, square functions involving densities, and the Cauchy transform  Xavier Tolsa, ICREA, Pg. Lluís Companys 23, 08010 Barcelona, Catalonia, and Dept. of Mathematics and BGSMath, Universitat Autònoma de Barcelona, 01893 Bellaterra, Catalonia 
MEMO/1157  Imaginary SchurWeyl duality  Alexander Kleshchev, Department of Mathematics, University of Oregon, Eugene, Oregon 97403 and Robert Muth, Department of Mathematics, University of Oregon, Eugene, Oregon 97403 
MEMO/1156  Hyperbolically embedded subgroups and rotating families in groups acting on hyperbolic spaces  F. Dahmani, Université de Grenoble Alpes, Institut Fourier, F38000 Grenoble, France, V. Guirardel, Université de Rennes 1 263 avenue du Général Leclerc, CS 74205, F35042 RENNES Cedex France and D. Osin, Department of Mathematics, Vanderbilt University, Nashville, Tennessee 37240 