The speakers are

• Michael Hutchings (UC, Berkeley),
• Xin Zhou (Stanford),
• Yi Wang (Stanford),
• Jeff Viaclovsky (U Wisconsin, Madison).

------ First announcement -----

Conference in Algebra and Topology celebrating Lionel Schwartz's 60th birthday

University of Nantes (France), 22-24 May 2013 starting at 2pm on Wednesday 22nd May.

Scientific committee: Haynes Miller (MIT), Bob Oliver (Paris 13), Jean-Claude Thomas (Angers)

Participants wishing to contribute a talk should send a title and an abstract. Deadline for talk submission: March 31st, 2013

All information will be posted on the webpage http://www.math.sciences.univ-nantes.fr/~LS60/

The organizers Aurélien Djament (Nantes), Vincent Franjou (Nantes), Geoffrey Powell (Angers), Christine Vespa (Strasbourg)

Contact: LS60@univ-nantes.fr

As usual, there will be 6 or 7 invited talks, plus parallel sessions of 40-minute contributed talks. As usual, one of the invited speakers is in algebraic topology, and this year it will be Mark Behrens (MIT).

Preliminary list of invited speakers/participants

Scientific Committee : D. Auroux, Y. Eliashberg, I. Itenberg, G. Mikhalkin, S. Akbulut

Organizing Commitee : T. Önder, S. Koçak, A. Degtyarev, O. Kisisel, Y. Ozan, T. Etgü, S. Salur

The conference ``Homotopical methods in algebraic geometry" will be held Tuesday, May 28 through Saturday June 1, 2013 at the University of Southern California. The conference webpage, which includes a list of speakers, is available at

https://sites.google.com/site/hmag2013/

Some funding is available to support travel to and lodging in Los Angeles during the conference, especially for early career mathematicians. We request that everyone interested in attending the conference register at:

https://sites.google.com/site/hmag2013/registration

Because of the large number of requests for funding, we ask that students or postdocs interested in attending submit a 1 paragraph explanation of how they will benefit from attending the conference (to be input in the "additional comments" box). For graduate students, we also ask that a senior mathematician send a short recommendation on your behalf to:

mwalker5@unl.edu

To receive full consideration for funding, we request that you register and submit all requested materials by March 31, 2013.

Best regards

The organizers (Aravind Asok, Eric Friedlander, Christian Haesemeyer, Mark Walker, Chuck Weibel)

This year's theme is: wall-crossing and integrable systems.

This year, the format of GAP will be different, with 5 mini-courses on different aspects of the chosen theme. The short courses will benefit graduate students and postdoctoral fellows as well as the participants of the 3-14 June, 2013, CRM conference "Moduli Spaces and their Invariants in Mathematical Physics", whose second week will include a number of talks on wall-crossing. Our schedule will also allow ample time between talks for discussions.

GAP 2013 is now the fifth installment in what has become an annual tradition. The history of GAP and more information about this year's conference can be found here: http://www.math.uwaterloo.ca/~gap/

Organizers: Marco Gualtieri (Toronto), Spiro Karigiannis (Waterloo), Ruxandra Moraru (Waterloo), Johannes Walcher (McGill), and McKenzie Wang (McMaster).

Mini-courses will be given by:

• Philip Boalch (École Normale Supérieure & CNRS)

• Sergey Cherkis (University of Arizona)

• Tamàs Hausel (EPF Lausanne)

• Andrew Neitzke (University of Texas at Austin)

• Lauren Williams (UC Berkeley)

Please see the conference website for the most up-to-date information.

The 3rd Meeting in Geometry, Topology and Math. Physics will be held in Rabat-Morocco on 6-8 June 2013. The meeting will be organized as a 3 days mini-school on three courses: Operads (B. Vallette, Nice, France), TQFT (L. Charles, Paris, France), Topological Robotics (L. Vandembroucq, Praga, Portugal). The meeting is dedicated to the memory of Jean-Louis Loday For further information, see http://algtop.net

see conference website

PRINCIPAL SPEAKER: The featured speaker is Pedro Ontaneda of Binghamton University. He will give a series of three one-hour lectures on "Riemannian Hyperbolization".

CONTRIBUTED TALKS: Participants are invited to contribute talks.

FUNDING: The workshop is partially supported by the National Science Foundation and Calvin College. Limited funds will be available to support travel and local expenses of participants. Priority will be given to graduate students and those without other funding sources.

ABSTRACT OF THE LECTURES: Negatively curved Riemannian manifolds are fundamental objects in many areas of mathematics, but very few examples are known: besides the hyperbolic ones, the other known examples are the Mostow-Siu examples (1980, dimension 4), the Gromov-Thurston examples (1987), the exotic Farrell-Jones examples (1989), and the three examples of Deraux (2005, dimension 6). Hence, apart from dimensions 4 and 6, every known example of a closed negatively curved Riemannian manifold is homeomorphic to either a hyperbolic one or a branched cover of a hyperbolic one.

On the other hand, Charney-Davis strict hyperbolization (1995) produces a rich and abundant class of (non-Riemannian) negatively curved spaces. Charney-Davis hyperbolization builds on the hyperbolization process introduced by Gromov in 1987 and later studied by Davis and Januszkiewicz (1991). But the negatively curved manifolds constructed using the Charney-Davis strict hyperbolization process are very far from being Riemannian because the metrics have large and highly complicated sets of singularities.

In three Lectures we will sketch how to remove all the singularities from Charney-Davis hyperbolized manifolds, obtaining in this way a Riemannian strict hyperbolization process. Hence, through this work, we now know that the class of Riemannian negatively curved manifolds is also rich and large. And we can say that, in some sense, Riemannian negative curvature abounds in nature. Moreover we show we can do the Riemannian hyperbolization in a pinched way, that is, with curvature as close to -1 as desired.

Here are two of the many direct consequences of Riemannian hyperbolization that we will mention in the Lectures: (1) Every closed smooth manifold is smoothly cobordant to a closed Riemannian manifold with curvatures $\epsilon$-close to -1, for every $\epsilon>0$. (2) Every closed almost flat manifold is a cusp cross section of a finite volume pinched negatively curved manifold.

In the first half of Lecture One we will state the main result and its corollaries. In the second half of Lecture One and part of Lecture Two we will introduce three geometric processes: the two-variable warping trick (based on the Farrell-Jones warping trick), warp forcing, and hyperbolic extensions. Also in Lecture Two we will discuss the construction of extremely useful differentiable structures: normal differentiable structures on cubical manifolds and on Charney-Davis hyperbolizations. Finally in Lecture Three we will sketch how to smooth metrics on hyperbolic cones and sketch how smooth Charney-Davis hyperbolized manifolds.

This conference is supported by the National Science Foundation and by IMPA. Travel support will be available. Graduate students, recent PhDs and members of underrepresented groups are encouraged to attend the conference and apply for travel support. Priority will be given to those requesting support before March 1st, 2013.

The focus of this conference is on recent interactions between algebraic geometry and hyperbolic geometry which include: 2-dimensional Cremona group, fundamental groups of Kaehler manifolds, minimal model program and geometrization, geometry of complex ball quotients.

In honor of the 65th birthday of Georges Maltsiniotis, a conference has been organized in Paris 7 on June 17-18. Talks will be delivered by:

• Dimitri Ara (Radboud Universiteit, Nijmegen)
• Alain Bruguières (Université Montpellier 2)
• Albert Burroni (Université Paris 7)
• Pierre Cartier (IHES)
• Denis-Charles Cisinski (Université Toulouse 3)
• Caroline Gruson (Université de Lorraine)
• André Joyal (Université du Québec à Montréal)
• Bruno Kahn (CNRS, Institut de mathématiques de Jussieu)
• Bernhard Keller (Université Paris 7) (to be confirmed)
• Ieke Moerdijk (Radboud Universiteit, Nijmegen)
• Jacques Sauloy (Université Toulouse 3)
• Bertrand Toën (CNRS, Université Montpellier 2)
• André Warusfel

On the occasion of Michel Boileau's 60th birthday, an international conference on low-dimensional topology and geometry will be held at the Toulouse Mathematics Institute, in Toulouse, France, 24-28 June 2013.

Plenary talks will be given by :

• D. Calegari (Chicago)
• V. Colin (Nantes)
• D. Cooper (Santa Barbara)
• S. Friedl (Köln)
• D. Gabai (Princeton)
• F. Guéritaud (Lille)
• S. Kerckhoff (Stanford)
• T. Li (Boston)
• Y. Ni (Caltech)
• J. Purcell (Brigham Young)
• A. Reid (Austin)
• H. Rubinstein (Melbourne)
• P. Shalen (Chicago)
• J. Souto (Vancouver)
• G. Walsh (Tufts)
• R. Weidmann (Kiel)

Homotopy invariant notions of algebraic and geometric objects have been receiving more and more attention in the past years, with many new ideas providing a fruitful interplay between, for instance, homotopical algebra for algebras and operads, higher Lie algebroids, and theory of higher categories. The goal of this workshop is to explore some recent progress in these areas. In addition to research reports, we envisage a mini-course on Lie-infinity methods in rational homotopy theory, a recurring topic implicitly present at the core of all these areas. The workshop will include enough time for discussions, and a problem session.

Organized around and in recognition of Dale Rolfsen's research contributions throughout his career, this conference intends to bring together researchers from each of these active areas.

Please note that space for this conference will be limited, and registration is required. The deadline for registration is March 1.

The theme of the programme will be the geometry and analysis of the Ricci tensor on Riemannian manifolds, with applications to the study of Einstein metrics and to Kahler geometry.

Limited funding is available to support participants and can be applied for through the online application forms. Applications for funding will be considered for participants applying by 31 December 2012. Funding decisions will be made and communicated to participants by 31 January 2013.

Four-day workshop consisting of lectures by four invited speakers, and focussing on applications of category theory.

• Richard Garner (introduction and background)
• Marcelo Aguiar (combinatorics, Hopf algebras)
• Scott Morrison (fusion categories)
• Mike Shulman (homotopy theory)

See also the separate listing for conference the following week.

The aim of this concluding conference "Combinatorial Structures in Algebra and Topology" of the past graduate programme "Combinatorical Structures in Algebra and Topology" is to celebrate the work within this programme in the last years.

Invited Speakers:

• Morten Brun (University of Bergen)
• Graham Denham (University of Western Ontario)
• Neil Epstein (George Mason University)
• David Gepner (University of Regensburg)
• Jürgen Herzog (University of Duisburg-Essen)
• Thomas Kahle (TU München)
• Uwe Nagel (University of Kentucky)
• Paul Arne Østvær (University of Oslo)
• Anurag Singh (University of Utah)
• Greg Smith (Queen's University Kingston)
• Markus Szymik (University of Copenhagen)
• Matteo Vabaro (University of Genoa)

Speakers from or associated to the past graduate programme:

• Georg Biedermann (University of Osnabrück)
• Simone Böttger (University of Osnabrück)
• Philip Herrmann (University of Hamburg)
• Julio Moyano Fernández (University of Osnabrück)
• Dang Hop Nguyen (University of Genoa)
• Georgios Raptis (University of Osnabrück)
• Christof Söger (University of Osnabrück)
• Axel Stäbler (University of Mainz)
• Florian Strunk (University of Regensburg)
• Jan Uliczka (University of Osnabrück)

Annual category theory conference.

Topologists and geometers very welcome.

See also separate listing for the Workshop on Applications of Category Theory the week before.

The aim of the conference is to present various aspects of applied topology from classical to the recent research results. Among the main topics of the conference there are:

• theory of TC (robot motion planning) and its various modifications (as well as the Lusternik-Schnirelmann category);
• topology of configuration spaces (and applications, including applications to combinatorics);
• stochastic algebraic topology (random complexes, random manifolds, applications);
• Morse theory in the context of applications, discrete Morse theory;
• some elements of computational topology;
• applications of topology beyond mathematics, e.g. to magnetohydrodynamics, population biology, medicine, engineering and other sciences.

The Conference honors Alan Weinstein and his contributions to mathematics. Weinstein has been one of the most influential figures in symplectic geometry, Poisson geometry, and its connections with mathematical physics and analysis in the past forty years. description Weinstein's fundamental contributions have shaped many areas of mathematics, and have inspired many others. This conference will be a forum to celebrate Alan Weinstein's fundamental contributions to mathematics, and to thank him for many years of mentorship; many of Weinstein's students and postdocs are now established figures themselves.

Preliminary Announcement

Samuel Eilenberg, one of mathematicians who shaped 20th century mathematics and made important contributions to theoretical computer science, was born in Warsaw on September 30, 1913. The Centenary Conference will be held in the city of his birth July 22-26, 2013.

The intention is to cover all the areas of Eilenberg's great contributions: topology, category theory and computability. The categorical viewpoint developed by Eilenberg and his collaborators lies behind many recent developments, thus the conference will be of relevance to a large body of current research in mathematics. The program of the Conference will consist of plenary lectures and contributed talks covering the wide scope of Eilenberg's mathematical legacy. Some historical materials will be presented to illustrate social context of his life.

The conference venue will be the old campus of the University of Warsaw, Alma Mater of Samuel Eilenberg. Already as a student Eilenberg was one of the most active members of the Warsaw topology group - he left Warsaw in April 1939, thus escaping the Holocaust. After several short employments at institutions in the USA, in 1947 Eilenberg settled at Columbia University, where he stayed until retirement in 1982. He was a member of the Polish and American Mathematical Societies and of the Polish Academy of Sciences. Samuel Eilenberg was an extraordinary personality; he was also a famous collector and expert in Southeast Asian art. He donated his impressive collection to the Metropolitan Museum of Art in New York.

The Conference is organized by the University of Warsaw, Polish Mathematical Society and the Institute of Mathematics of the Polish Academy of Sciences in collaboration with the American Mathematical Society and Columbia University. On the occasion of the conference a special volume of Fundamenta Mathematicae will appear, the journal in which Eilenberg published many papers, including his first (in 1934) and the last (in 1988) topological papers.

At the conference website you can subscribe to the electronic Conference Newsletter. The First Announcement will be distributed later in Fall.

This is a satellite activity to the First Mathematical Congress of the Americas (www.mca2013.org).

This conference will bring together researchers in the study of both geometric and dynamical aspects of infinite-type surfaces. The main activities of the conference will be two mini-course lecture series, lectures by conference attendees, and dedicated time for collaboration.

The mini-courses will be aimed at non-experts in the respective fields of dynamics and geometry of infinite-type surfaces. They are as follows:

• Wind-tree models, taught by Samuel Lelièvre (Orsay) and Vincent Delecroix (Jussieu)
• Infinite dimensional Teichmüller spaces, taught by Alastair Fletcher (Northern Illinois University)

See website for speaker list and further information.

We are pleased to announce to eleventh edition of the annual GAP conference and summer school:

Geometry and Physics - "Séminaire itinérant" "Higher Geometry and Quantum Field Theory"

University of Pittsburgh August 19-23, 2013

Mini-course speakers:

- Ulrich Bunke (Regensburg)

- Kevin Costello (Northwestern)

- Stephan Stolz (Notre Dame)

Plenary speakers: To be announced.

The attendance fee is 0$. There will be limited support for travel and housing for young US participants. It is recommended to apply early. The deadline for applications is May 15, 2013.

For registration and more information, please visit the website:

http://www.geometryandphysics.org/

The organizers,

Hisham Sati (Pittsburgh)

Mathieu Stienon (Penn State)

Yannick Voglaire (Penn State)

Ping Xu (Penn State)

The speakers are:

• Noel Brady, U. of Oklahoma
• Mark Hagen, U. of Michigan
• Patrick Hooper, CUNY
• Alexander Kolpakov, Vanderbilt
• Kathryn Mann, U. of Chicago
• Vladimir Markovic, Caltech
• Patrick Reynolds, U. of Utah
• Alex Wright, U. of Chicago

The organizers are: Mladen Bestvina, Ken Bromberg, Jon Chaika, Greg Conner, Jessica Purcell, Eric Swenson and Kevin Wortman.

Organizing Committee: Javier Aramayona (NUI, Galway), Tom Brady (DCU), Martin Bridgeman (Boston College), Martin Bridson (Oxford University), Vladimir Dotsenko, (Trinity College Dublin), Brendan Guilfoyle, (Tralee institute of Technology), Tao Li, (Boston College), G. Robert Meyerhoff (Boston College).

The workshop will consist of a two day mini-course August 27-28, followed by a three day lecture series, August 29-31, 2013.

This year's topic for the workshop is Geometry and Groups after Thurston.

This past year has seen the passing of William P. Thurston (1946-2012) whose work and conjectural program influenced much of the research in the fields of low-dimensional geometry and topology and geometric group theory. Also recent progress has seen most of Thurston's conjectural program now solved. This year's workshop aims to consider new directions of research and new problems which will direct future research in the spirit of Thurston's original program.

Funding and Sponsors: The workshop is co-sponsored by Boston College, the GEAR Network, the HMI and the NSF. Funding is available for graduate students and junior researchers wishing to attend the mini-course and workshop. A limited amount of funding is also available for both junior and senior researchers wishing to attend the workshop. If you would like to request travel support you can do so on the workshop website at http://www.hamilton.tcd.ie/events/gt/gt2013/register.htm

Minicourse: This years minicourse will be given by Ken Bromberg (Utah) on Groups action on Quasi-Trees. The minicourse will run August 27-28 and consist of a two-day series of lectures and discussions. The target audience is graduate students and junior researchers.

Lecture Series: The lecture series will be August 29-31 and consist of a series of 45 minute talks. There will also be scheduled discussion and problem sessions.

There will be three mini-courses, given by the following lecturers:

• Kathryn Hess (EPFL)
• Pascal Lambrechts (UCL)
• Gavin Seal (EPFL).

This Summer School is jointly organized by the research groups in category theory and in algebraic topology at the Université catholique de Louvain and at the Ecole Polytechnique Fédérale de Lausanne. A second Summer School will take place at the EPFL in 2014, and will be announced later on.

If you are interested in attending the Summer School, please contact any of the organizers.

see webpage for details

See conference website for speaker list and further information.

The conference will highlight recent advances in geometry, topology, and geometric group theory and aims at fostering communication between experts and young researchers as well as identifying potential new directions of further research in these fields.

This is a preliminary announcement for the fourteenth Union College Mathematics Conference. This year the conference topics are algebraic topology, category theory, commutative algebra, differential geometry, and statistics. In addition to invited lectures, there will also be shorter contributed talks in parallel sessions. Anyone interested in giving such a talk should contact one of the organizers.

The meeting will begin with an evening reception on Friday, October 18, and end on Sunday afternoon. More information will be available at the Union College Mathematics Department website in June.

Union College is centrally located in New York's capital district about 10 miles from the Albany International Airport, easily accessible by train from NYC, and just 3 to 4 hours by car from NYC, Boston, and Montreal.

We hope to see you here in the fall!

ORGANIZERS

Algebraic Topology

• Brenda Johnson (johnsonb@union.edu)
• Kathryn Lesh (leshk@union.edu)

Big Data Analytics

• Roger Hoerl (hoerlr@union.edu)

Category Theory: A Celebration of Bill Lawvere and Fifty Years of Functorial Semantics

• Susan Niefield (niefiels@union.edu)
• Kimmo Rosenthal

Commutative Algebra and Algebraic Geometry

• Leila Khatami (khatamil@union.edu)

Special Geometric Structures

• Charles Boyer
• Jeff Jauregui
• Christina Tonnesen-Friedman (tonnesec@union.edu)

This is a preliminary announcement for the fourteenth Union College Mathematics Conference. This year the conference topics are algebraic topology, category theory, commutative algebra, differential geometry, and statistics.

In addition to invited lectures, there will also be shorter contributed talks in parallel sessions. Anyone interested in giving such a talk should contact one of the organizers.

The meeting will begin with an evening reception on Friday, October 18, and end on Sunday afternoon. More information will be available at the Union College Mathematics Department website (www.math.union.edu) in June.

Union College is centrally located in New York's capital district about 10 miles from the Albany International Airport, easily accessible by train from NYC, and just 3 to 4 hours by car from NYC, Boston, and Montreal.

We hope to see you here in the fall!

ORGANIZERS

Algebraic Topology: Brenda Johnson (johnsonb@union.edu) Kathryn Lesh (leshk@union.edu)

Big Data Analytics: Roger Hoerl (hoerlr@union.edu)

Category Theory, A Celebration of Bill Lawvere and Fifty Years of Functorial Semantics: Susan Niefield (niefiels@union.edu)

Commutative Algebra and Algebraic Geometry: Leila Khatami (khatamil@union.edu)

Special Geometric Structures: Charles Boyer Jeff Jauregui Christina Tonnesen-Friedman (tonnesec@union.edu)

Tom Goodwillie has made fundamental contributions to algebraic and geometric topology. His ideas have been especially influential in the study of smooth manifolds, algebraic K-theory, and homotopy theory. The goal of this conference is to bring together leading researchers who will report on the latest important developments in these fields.

This conference will celebrate the profound influence of Bill Thurston's work on the entire mathematical community. Thurston made fundamental contributions to topology, geometry, and dynamical systems. But beyond these specific accomplishments he introduced new ways of thinking about and of seeing mathematics. He discovered connections between disciplines which led to the creation of entirely new fields.

The goal of this meeting is to bring together mathematicians from a broad spectrum of areas to describe recent advances and explore future directions motivated by Thurston's transformative ideas.