ICMS

Apr 13, 2009 - Apr 18, 2009

Room 516, Department of Mathematics, University Gardens, University of Glasgow, G12 8QW

Organisers

Name	Institution
Brown, Ken A	University of Glasgow
Gordon, Iain	University of Edinburgh
Reshetikhin, Nicolai	University of Berkeley
Rouquier, Raphaël	University of Oxford
Stroppel, Catharina	University of Bonn

This workshop is in association with the programme on Algebraic Lie Theory at the Isaac Newton Institute for Mathematical Sciences.

For a long time the idea of categorification has been in the background of many ideas in algebraic Lie theory and its connections to geometry. Several hard questions in Lie theory have been solved by translation (often via geometry) into combinatorics. For example, irreducible modules are labelled by combinatorial data and multiplicity formulas can be computed via combinatorially defined polynomials. On the other hand, topological questions are sometimes transferred into combinatorics in order to produce a clean answer: combinatorially defined knot invariants via polynomials; changing of coordinate systems via mutation rules; etc. It is becoming increasingly clear that the connecting principle of many such results in both Lie theory and topology is the idea of categorification. The notion “categorification” goes back to Crane and Frenkel, motivated by mathematical physics, and in particular by the hope to construct higher dimensional topological quantum field theories.

The conference wants to clarify the notion of categorification and its appearance in three different areas of mathematics: algebraic geometry, symplectic geometry and representation theory. The first goal of this workshop is to bring together the international figures working on categorification with connections to representation theory, providing the possibility for people from different fields to meet. Our conference should provide the basis for interactions between the areas of representation theory, symplectic geometry and topology. There are many different strands to the field, and it is vital that as much discussion as possible takes place between researchers.

The conference is intended to be quite specialised around the subject categorification. An Introductory Workshop will provide the necessary background and basis for communication.

20th ARTIN Meeting
The twentieth meeting of Algebra and Representation Theory in the North (ARTIN) will be held in the Department of Mathematics at the University of Glasgow. For further information about this PhD and Postdoc meeting please follow this link to the 20th ARTIN Meeting.

Arrangements

This meeting will be made up of two separate workshops:

Introductory Workshop
Commencing with lunch and registration at 12.00 Monday 13 April, plus full day Tuesday 14 April 2009 (Funded by the Isaac Newton Institute for Mathematical Sciences)

Workshop on Categorification and Geometrisation from Representation Theory
Wednesday 15 April to Saturday 18 April 2009; closing at 13.30 on Saturday 18 April. (Funded by ICMS)

Venue
The workshop will be held in Room 516, Department of Mathematics, University of Glasgow. Location maps - the Department of Mathematics can be found at D4. Lecture Room 516 is equipped with blackboards, data-video projector, overhead projector, overhead visualiser and screens.

Travel
Information about travel to the UK and Glasgow is available here. Follow this link for bus information including the Airlink Services to and from the Airport. If you are travelling by air, the transport sections of the following websites may be useful:Glasgow International Airport and Glasgow Prestwick Airport

Directions from Hillhead Subway Station, Byres Road, to Department of Mathematics, University of Glasgow
Turn left on exit Hillhead Subway Station. Next to the Station there is an Iceland supermarket, turn left here into Ashton Lane. Walk along the lane, bearing right as the lane curves and take the first small flight of steps you see on your left. The steps will bring you out on University Gardens. Turn right at the top of the steps and the Department of Mathematics is the second building on the right.

Accommodation
If you indicated, during on-line registration, that you wish ICMS to arrange your accommodation, a reservation will have been made for you to stay in the Glasgow Pond Hotel, Great Western Road, West End, Glasgow, Scotland, G12 0XP. No further action is required and full details will be emailed to you nearer the time of the workshop. However, if your arrival and departure dates alter in any way, please email Audrey Brown at ICMS immediately.

If you wish to arrange your own accommodation, there may still be rooms available at the Glasgow Pond Hotel and it is within walking distance (approximately 30 minutes walk) from the workshop venue. Alternatively, the Glasgow Tourist Information Office may be able to help you find accommodation.

The hotel is situated next to the Glasgow Gartnavel Hospital which may be used as a landmark. It is well served by buses from the city centre (No 66 and No 20 from Hope Street in the city centre and the No 118 from Buchanan Street Bus Station). Follow this link for bus information including the Airlink Services to and from the Airport. For a route map of buses serving the city centre please click here. For travel within Glasgow City Centre single fares range from £0.85 for a single fare stage (approximately half a mile) up to £1.50. Please note that on all services you pay the driver as you get on. Services operate on an exact fare (no change given) basis so please try to have the correct money ready if you know your fare.

If you have some local knowledge of Glasgow, it is possible to take a train from Glasgow Queen Street to Hyndland Station. It is important to exit Hyndland Station on the Gartnavel side of the track. Follow a footpath leading to the car park of Gartnavel Hospital. After crossing the car park, the Glasgow Pond Hotel is situated at the entrance to the hospital grounds on the Great Western Road. However, please note that signposts for the hotel face the Great Western Road and are not obvious from the car park at Gartnavel.

Directions from Glasgow Pond Hotel to Department of Mathematics, University of Glasgow
Click here for a map showing the route. Exit the Pond Hotel by the main exit and turn right along Great Western Road. After about 25-30 minutes walking distance, turn right on Byres Road. Passing Hillhead Subway Station (on your left) walk along to until you reach University Avenue or Ashton Road on your left. Walk along University Avenue or Ashton Road. Just before the Boyd Orr tower (on your left), turn left and up steps onto University Gardens. Turn right and the Department of Mathematics is the second building on the right.

Meals and Refreshments
A campus map is available here.
The Introductory Workshop will commence with registration and a sandwich lunch at 12.00 on Monday 13 April in the Common Room, ground floor of the Department of Mathematics at University of Glasgow (D4 on the campus map). At 18.00 on Tuesday 14 April, a buffet evening meal will be provided in the Atrium of the Wolfson Medical School Building. The Wolfson Medical School Building (C8 on the campus map) is located on University Avenue, directly behind the Department of Mathematics. Hot food will be served between 18.00 and 19.30. This meal is open to all participants who have attended the Introductory Workshop or are arriving for the Categorification Workshop. It is intended that there will be a Workshop Dinner on Thursday 16 April, meeting at 19.00 in the Café Bar of 1A The Square (A9 on the campus map), with dinner being served at 19.30 in the Ferguson Room of 1A The Square. Morning and afternoon refreshments will be provided throughout both workshops in the Department of Mathematics Common Room. Unless otherwise agreed, there will be no cost to participants for the catering listed above.

Participants are free to explore the restaurants and bars nearby to purchase all other lunches and evening meals.

Financial Matters
Unless otherwise specified in your invitation email, the workshop grant will cover the cost of your bed and breakfast accommodation, tea/coffee Monday to Saturday, lunch on Monday only, the informal buffet evening meal on Tuesday and the Workshop Dinner on Thursday evening.

If we have agreed to pay some of your travel costs, you will have been informed in your invitation email. Reimbursement will take place after the workshop and will involve payment directly into your bank account. At Registration you will be given an expenses claim form and this should be submitted to ICMS, with receipts. It would be helpful if you could bring your bank details to the workshop. In addition to the bank account number, participants from the USA and Canada will require their bank’s routing number, those from the UK will be asked for the bank sort code, and those from Europe and the rest of the world, their IBAN and SWIFT/BIC code. We cannot reimburse any item without a receipt.

Unless otherwise stated in your invitation or further correspondence, there will be a registration fee of 30.00 GBP for the Categorification Workshop. We ask that this is paid in advance by using this credit or debit card payment form. The form should be printed out, completed and faxed back (as email is not a secure way of sending credit card information). The fax number is on the form. If it is not possible for you pay in advance, you may print out the credit/debit card form above and bring the completed form along to Registration. We prefer not to handle cash at Registration.

Programme

Introductory Workshop

Monday 13 April

12.00 - 13.00	Sandwich Lunch and Registration
	SESSION 1
13.00 - 14.00	Joel Kamnitzer (University of Toronto) Geometry and Categorification I Categorification via geometric Satake correspondence
14.30 - 15.30	Ian Grojnowski (University of Cambridge) & Kevin McGerty (Imperial College London) Representation Theory and Categorification I D-modules and localization
15.30 - 16.00	Tea/Coffee
16.00 - 17.00	Gregor Masbaum (CNRS) Topology and Categorification I Introduction to Reshetikhin-Turaev invariants and modular categories

 

Tuesday 14 April

	SESSION 2
09.00 - 10.00	Sabin Cautis (Rice University and MSRI) Geometry and Categorification II Braid group actions in algebraic geometry
10.00 - 10.30	Tea/Coffee
10.30 - 11.30	Ian Grojnowski (University of Cambridge) & Kevin McGerty (Imperial College London) Representation Theory and Categorification II Hall algebras, quivers and canonical bases
11.35 - 12.35	Ciprian Manolescu (UCLA/University of Cambridge) Topology and Categorification II Categorification via Floer homology and the Seidel-Smith construction
12.35 - 13.55	Lunch break
	SESSION 3
13.55 - 14.55	Sabin Cautis (Rice University and MSRI) Geometry and Categorification III Categorical sl(2) actions on categories of coherent sheaves
15.00 - 16.00	Ian Grojnowski (University of Cambridge) & Kevin McGerty (Imperial College London) Representation Theory and Categorification III Further examples
16.00 - 16.30	Tea/Coffee
16.30 - 17.30	Jürgen Fuchs (Karlstad University) Topology and Categorification III Modular categories and rational conformal field theory
18.00 - 19.30	Informal buffet meal and registration for Categorification Workshop

 

Categorification Workshop

Wednesday 15 April

08.30 - 09.30	Registration
09.30 - 10.30	Jonathan Brundan (University of Oregon) The graded Lascoux-Leclerc-Thibon conjecture
10.30 - 11.00	Tea/Coffee
11.00 - 12.00	John Baez (University of California, Riverside) Categorification and topology
12.00 - 13.30	Lunch break
13.30 - 14.30	Louis Crane (Kansas State University) Categorification and physical spacetime
14.30 - 15.30	Bernhard Keller (University Paris 7) The periodicity conjecture via 2-Calabi-Yau categories
15.30 - 16.00	Tea/Coffee
16.00 - 17.00	Mikhail Khovanov (Columbia University) Categorification of quantum groups

 

Thursday 16 April

09.30 - 10.30	Aaron Lauda (Columbia University) Categorifying quantum sl2
10.30 - 11.00	Tea/Coffee
11.00 - 12.00	Volodymyr Mazorchuk (Uppsala University) Representation theory of the symmetric group via categorification
12.00 - 13.30	Lunch break
13.30 - 14.30	Dror Bar-Natan (University of Toronto) Convolutions on lie groups and lie algebras and ribbon 2-knots
14.30 - 15.30	Jacob Rasmussen (University of Cambridge) Sutured Floer homology: de (and re) categorification
5.30 - 16.00	Tea/Coffee
16.00 - 17.00	Raphael Rouquier (University of Oxford) Higher representation theory
19.00	Workshop Dinner

 

Friday 17 April

09.30 - 10.30	Richard Thomas (Imperial College London)) Joyce’s Hall algebra
10.30 - 11.00	Tea/Coffee
11.00 - 12.00	Ulrike Tillmann (University of Oxford) Higher dimensional cobordism categories and their topology
12.00 - 14.30	Lunch break
14.30 - 15.10	Joel Kamnitzer (University of Toronto) Categorical geometric skew Howe duality
15.10 - 15.50	Ciprian Manolescu (UCLA/University of Cambridge) Symplectic instanton homology
15.50 - 16.20	Tea/Coffee
16.20 - 17.00	Gregor Masbaum (CNRS) Integral lattices in TQFT and integral modular categories

 

Saturday 18 April

09.30 - 10.30	Alexey Bondal (University of Aberdeen) Categorifying integral polytops geometry
10.30 - 11.00	Tea/Coffee
11.00 - 12.00	Vladimir Baranovski (University of California, Irvine) Uhlenbeck compactification as a stack
12.00 - 13.00	Anton Kapustin (California Institute of Technology) Three-dimensional topological field theory and a categorification of the derived category of coherent sheaves
13.00	Close of workshop

 

Presentations for the Introductory Workshop:

Sabin Cautis: Braid group actions in algebraic geometry
We discuss various examples of braid group actions on derived categories of coherent sheaves while paying attention to the geometry involved.

Sabin Cautis: Categorical sl(2) actions on categories of coherent sheaves
We explain how categorical sl(2) actions can be used to construct equivalences generalizing Seidel-Thomas twists. This is illustrated by an sl(2) action on cotangent bundles of Grassmannians which generalizes the Seidel-Thomas twist on the cotangent bundle of P^1. This is joint work with Joel Kamnitzer and Anthony Licata.

Jürgen Fuchs: Modular categories and rational conformal field theory
I will present a construction of correlation functions in two-dimensional rational conformal field theory. The construction expresses a correlation function as the invariant of a ribbon graph in a three-manifold. This invariant is computed with the help of three-dimensional topological field theory. Besides the modular tensor category C that provides the decoration data for the 3-d TFT, the crucial ingredient is a certain type of Frobenius algebra in C. Some aspects of such algebras will be described as well.

Ian Grojnowski and Kevin McGerty: D-modules and localization
We will discuss the theory of D-modules and how they play a crucial role in representation theory via the famous Beilinson-Bernstein localization theorem.

Ian Grojnowski and Kevin McGerty: Hall algebras, quivers and canonical bases
We will sketch the Hall algebra construction of the positive part, and how its "faisceaus-fonctions" lift yields the canonical basis.

Ian Grojnowski and Kevin McGerty: Further examples
We will discuss further examples of interaction between representation theory and geometric structures.

Joel Kamnitzer: Categorification via geometric Satake correspondence
The geometric Satake correspondence relates the tensor category of representations of a reductive group to the topology of the affine Grassmannian for the Langlands dual group. I will explain a program, developed with Sabin Cautis, to use this correspondence and derived categories of coherent sheaves in order to construct knot homology theories.

Gregor Masbaum: Introduction to Reshetikhin-Turaev invariants and modular categories
This talk will be an introduction to Witten-Reshetikhin-Turaev quantum invariants of 3-manifolds, Topological Quantum Field Theory (TQFT), and Turaev's axiomatization of it in terms of modular categories.

Ciprian Manolescu: Categorification via Floer homology and the Seidel-Smith construction
I will explain the general principles of how Lagrangian Floer homology can be used for categorification, and give a survey of the relevant results in the literature. Examples will include Heegaard Floer homology and Seidel-Smith homology.

 

Presentations for the Categorification Workshop:

Presentations:

Presentation Details
Baez, John
Categorification and topology
View Abstract Hide Abstract
The relation between n-categories and topology is clarified by a collection of hypotheses, some of which have already been made precise and proved. The "homotopy hypothesis" says that homotopy n-types are the same as n-groupoids. The "stabilization hypothesis" says that each column in the periodic table of n-categories stabilizes at a certain precise point. The "cobordism hypothesis" gives an n-categorical description of cobordisms, while the "tangle hypothesis" does the same for tangles and their higher-dimensional relatives. We shall sketch these ideas, describe recent work by Lurie and Hopkins on the cobordism and tangle hypotheses, and, time permitting, say a bit about how these ideas are related to other lines of work on categorification.
Baranovsky, Vladimir
Uhlenbeck compactification as a stack
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I will explain how the Uhlenbeck compactification of vector bundles on a smooth projective surface can be defined as a functor of families (i.e. as an algebraic stack). I will also explain how Hecke correspondences which modify a vector bundle along a divisor on a surface, can be extended to the Uhlenbeck compactification. This construction is related to the conjectural higher dimensional Geometric Langlands program
Bondal, Alexey
Categorifying integral polytops geometry
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The subjcet of combinatorics of integer polytopes is known to be related to geometry of toric varieties. Recently, this relation has received a categorical interpretation as an equivalence of derived categories. We will discuss this equivalence and related results.
Brundan, Jonathan
The graded Lascoux-Leclerc-Thibon conjecture
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In type A, some new algebras introduced recently by Khovanov-Lauda and Rouquier give rise to remarkable Z-gradings on group algebras of symmetric groups and more generally on various cyclotomic Hecke algebras. There are also graded versions of Specht modules for these algebras. In recent work joint with Kleshchev we have computed the q-decomposition numbers of these graded Specht modules. The result, which gives a graded version of the Lascoux-Leclerc-Thibon conjecture, is best expressed in the language of categorification.
Crane, Louis
Categorification and physical spacetime
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Categorification was originally invented to solve problems in Mathematical Physics, namely construction of TQFTs and more fundamentally of the quantum theory of gravity. I will discuss the original motivations and more recent developments.
Kamnitzer, Joel
Categorical geometric skew Howe duality
View Abstract Hide Abstract
I will explain a construction of the categorification of the braiding for tensor products of minuscule representations of sl(n). Our construction uses skew Howe duality and the machinery of categorical sl(2) actions. This is joint work with Sabin Cautis and Anthony Licata.
Kapustin, Anton
Three-dimensional topological field theory and a categorification of the derived category of coherent sheaves
View Abstract Hide Abstract
The Rozansky-Witten model is a 3d topological sigma-model whose target space X is a complex symplectic manifold. I will describe the 2-category structure on the set of its boundary conditions and show that it is a categorification of the derived category of coherent sheaves on X. In the special case when X is a cotangent bundle to a complex manifold Y, this 2-category is closely related to the 2-category of derived categorical sheaves over Y introduced by Toen and Vezzosi. I will also explain a surprising connection between a categorification of deformation quantization and complex symplectic geometry.
Keller, Bernhard
The periodicity conjecture via 2-Calabi-Yau categories
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The periodicity conjecture for pairs of Dynkin diagrams was formulated at the beginning of the nineties in mathematical physics, in work of Zamolodchikov, Ravanini-Tateo-Valleriani and Kuniba-Nakanishi. We outline a proof based on the machinery of Fomin-Zelevinsky's cluster algebras and their (additive) categorification via 2-Calabi-Yau categories.
Khovanov, Mikhail
Categorification of quantum groups
View Abstract Hide Abstract
I'll go over a joint work with Aaron Lauda on categorifications of positive halves of quantum universal enveloping algebras as well as categorification of the BLM form of quantum sl(n).
Lauda, Aaron
Categorifying quantum sl2
View Abstract Hide Abstract
Igor Frenkel introduced the idea that the quantum enveloping algebra of sl(2) could be categorified at generic q using its canonical basis. In my talk I will describe a realization of Frenkel's proposal using a diagrammatic calculus. If time permits I will also explain joint work with Mikhail Khovanov on how this construction can be generalized to quantum sl(n).
Manolescu, Ciprian
Symplectic instanton homology
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Floer's instanton homology was originally defined as an invariant of integral homology 3-spheres. The Atiyah-Floer Conjecture claims that there should be a symplectic counterpart to instanton theory, based on Lagrangian Floer homology. Starting from a Heegaard decomposition of a 3-manifold, I will explain one way to make sense of the symplectic side of the Atiyah-Floer conjecture, for arbitrary 3-manifolds. This is joint work with Chris Woodward.
Masbaum, Gregor
Integral lattices in TQFT and integral modular categories
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The SO(3)-TQFT at an odd prime has a natural integral structure. It means that all matrix coefficients of the mapping class group representations in this theory are algebraic integers. I will discuss the structure of the resulting "integral modular functor". This is joint work with Patrick Gilmer.
Mazorchuk, Volodymyr
Representation theory of the symmetric group via categorification
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The action of projective functors on the regular block of the BGG category O for the Lie algebra sl(n) categorifies the right regular representation of the symmetric group S(n). I will try to describe how one can use representation-theoretic properties of this action to deduce some results about representations of S(n), in particular, about simple modules, induced modules, certain filtrations, and Wedderburn's decomposition of the group algebra.
Rasmussen, Jacob
Sutured Floer homology: de (and re) categorification
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Sutured Floer homology is an invariant of sutured manifolds introduced by Andras Juhasz. In this talk I'll explain how to first decategorify this invariant to produce an invariant that is much like the Alexander polynomial; and then recategorify to give a definition of sutured Floer homology related to the bordered Floer homology of Lipshitz, Ozsvath and Thurston. This is joint work with Andras Juhasz and Stefan Friedl.
Rouquier, Raphaël
Higher representation theory
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We have introduced a 2-category associated with a Kac-Moody algebra (the type A case goes back to joint work with Joe Chuang and a close version of the positive half has been introduced independently by Khovanov and Lauda). We will discuss the 2-representation theory, ie, actions of this 2-category on categories (additive, abelian, triangulated, dg...). We will present a unicity result for simple integrable 2-representations and Jordan-Holder series. We will explain the realisation of simple 2-representations as categories of sheaves on quiver varieties and deduce the description of classes of indecomposable projective modules as canonical basis elements.
Thomas, Richard
Joyce’s Hall algebra
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I appear to be at the wrong conference, but I do know that some representation theorists like Ringel-Hall algebras, so I’ll describe a bit of Joyce’s stacky Hall algebra and how one can use it.
Tillmann, Ulrike
Higher dimensional cobordism categories and their topology
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Cobordism categories are at the foundations of topological quantum field theory. We will discuss how to define a strict higher dimensional version of the cobordism category, associate a topological space to them, and explain how these spaces relate to classical spaces in cobordism theory as studied by Thom and others in the middle of the last century.

Participants

Name	Institution
Abdel Gadir, Tarig	University of Glasgow
Achar, Pramod N	Louisiana State University
Ackermann, Bernd	Universität Stuttgart
Agerholm, Troels	Aarhus University
Amazeen, Grétar	University of Edinburgh
Arakawa, Tomoyuki	Nara Women's University
Baez, John	University of California, Riverside
Baranovsky, Vladimir	University of California, Irvine
Barthel, Tobias	University of Oxford
Begher, Gerrit	University of Freiburg
Bellamy, Gwyn	University of Edinburgh
Belolipetsky, Mikhail	Durham University
Berczi, Gergely	University of Oxford
Bondal, Alexey	University of Aberdeen
Brendle, Tara	University of Glasgow
Brown, Audrey	ICMS
Brown, Ken A	University of Glasgow
Brundan, Jonathan	University of Oregon
Calderon Martin, Antonio J	University of Cadiz
Cautis, Sabin	Rice University and MSRI
Chapovalova, Valentina	Uppsala University
Collins, Julia	University of Edinburgh
Cooney, Nicholas	University of Oxford
Crane, Louis	Kansas State University
Davison, Ben	University of Oxford
Docherty, Pamela	University of Edinburgh
Donovan, Will	Imperial College London
Douglass, Matthew	University of North Texas
Ehrig, Michael	University of Cologne
Elias, Ben	Columbia University
England, Matthew	Heriot-Watt University
Everitt, Brent	University of York
Faria Martins, Joao	Centro de Matemática da Universidade do Porto
Feigin, Misha	University of Glasgow
Felstaine, Eyal	Ben Gurion University
Fuchs, Jürgen	Karlstad University
Gaussent, Stéphane	Institut Elie Cartan Nancy
Geck, Meinolf	University of Aberdeen
Goodwin, Simon	University of Birmingham
Gordon, Iain	University of Edinburgh
Grant, Joseph	University of Bristol
Grojnowski, Ian	University of Cambridge
Gupta, Neha	University of Warwick
Harris, Michael	Université de Paris VII Denis Diderot
Henrich, Thilo	University of Bonn
Hoffnung, Alex	University of California, Riverside
Jantzen, Jens Carsten	Aarhus Universitet
Juteau, Daniel	CNRS, Univesité de Caen Basse-Normandie
Kamnitzer, Joel	University of Toronto
Kapustin, Anton	California Institute of Technology
Keller, Bernhard	Université de Paris VII
Khovanov, Mikhail	Columbia University
King, Alastair	University of Bath
Klein, Florian	University of Freiburg
Koeppe, Thomas	University of Edinburgh
Kolb, Stefan	University of Edinburgh
Korff, Christian	University of Glasgow
Kraehmer, Ulrich	University of Glasgow
Krasner, Daniel	Columbia University
Lauda, Aaron	Columbia University
Letellier, Emmanuel	University of Caen
Libedinsky, Nicolas	Université de Paris VII
Licata, Tony	Stanford University/MPI
Mackaay, Marco	Universidade do Algarve
Manolescu, Ciprian	UCLA / University of Cambridge
Martino, Maurizio	Universität Bonn
Masbaum, Gregor	CNRS
Mautner, Carl	University of Texas
Mazorchuk, Volodymyr	Uppsala University
McGerty, Kevin	Imperial College London
Meachan, Ciaran	University of Edinburgh
Miemietz, Vanessa	University of Oxford
Mikovic, Aleksandar	Lusofona University & GFMUL
Morrison, Scott	Microsoft Station Q
Mullaney, Joseph	University of Glasgow
O'Hagan, Steven	University of Glasgow
Owens, Brendan	University of Glasgow
Paasch, Anna-Louise	Universität Wuppertal
Parker, Alison	University of Leeds
Rasmussen, Jacob	University of Cambridge
Röhrle, Gerhard	Ruhr-Universität Bochum
Rouquier, Raphaël	University of Oxford
Rubinsztein, Ryszard	Uppsala University
Rumynin, Dmitriy	University of Warwick
Savage, Alistair	University of Ottawa
Shipman, Ian	University of Chicago
Silantyev, Alexey	University of Glasgow
Spencer, Christopher	University of Edinburgh
Steiner, Richard	University of Glasgow
Stevenson, Daniel	University of Glasgow
Stosic, Marko	Instituto Superior Tecnico
Stroppel, Catharina	University of Bonn
Thiel, Anne-Laure	IRMA, Strasbourg
Thomas, Richard	Imperial College London
Tillmann, Ulrike	University of Oxford
Treumann, David	University of Minnesota
Turner, Paul	Heriot-Watt University
Turner, Will	University of Aberdeen
van Roosmalen, Adam-Christiaan	Max-Planck-Institut für Mathematik
Vaz, Pedro	CAMGSD - Instituto Superior Técnico
Waldron, Jack	University of Cambridge
Webster, Ben	Massachusetts Institute of Technology
Weist, Thorsten	Universität Wuppertal
Willerton, Simon	University of Sheffield
Williamson, Geordie	University of Oxford
Wilson, Benjamin	Université de Paris VII
Winn, Dorothy	University of Glasgow
Zuevsky, Alexander	National University of Ireland, Galway