
SCIENTIFIC PROGRAMS AND ACTIVITIES 

March 21, 2019  
International Conference on Representations of Algebras

SCHEDULE AUGUST 1 
10


8:15  9:00  Registration and Continental breakfast at The Fields
Institute, 222 College Street, Toronto 
9:00  9:50 
KONSTANZE RIETSCH, University of
Oxford Introduction to perverse sheaves I 
9: 50  10:20  Coffee Break 
10:20  11:10  SEOKJIN KANG, Korea Institute
for Advanced Study Quantum affine algebras and combinatorics of Young walls 
11:20  12:10  GEORGIA BENKART, University of
Wisconsin, Madison Twoparameter quantum groups  they are doubly good 
12:20  2:10  Lunch Break 
2:10  3:00  TOSHIYUKI TANISAKI, Osaka City
University Character formulas of KazhdanLusztig type I 
3:10  3:30  Afternoon Tea 
3:30  4:20  HENNING HAAHR ANDERSEN, Aarhus University
Tilting modules for algebraic and quantum groups 
4:30  5:20  YUN GAO, York University A primer to extended affine Lie algebras (Extended affine Lie algebras: classification) 
5:30  7:00  Reception at The Fields Institute 
Friday August 2 

8:30  9:00  Continental breakfast at The Koffler Institute 
9:00  9:50 
MIKHAIL KHOVANOV, University of
California, Davis How and why semisimple representations become Grothendieck groups 
9: 50  10:20  Coffee Break 
10:20  11:10  YURI BEREST, Cornell University
Cherednik algebras and differential operators on quasiinvariants 
11:20  12:10 
YURI BEREST, Cornell University
Ideals of the Weyl algebra 
12:20  2:10  Lunch Break 
2:10  3:00  VYJAYANTHI CHARI, University of
California, Riverside Weyl modules and the fusion product for representations of affine Lie algebras 
3:10  3:30  Afternoon Tea 
3:30  4:20  KONSTANZE RIETSCH, University of
Oxford Introduction to perverse sheaves II 
4:30  5:20  KONSTANZE RIETSCH, University of
Oxford Introduction to perverse sheaves III 
Saturday August 3 

8:30  9:00  Continental breakfast at The Koffler Institute 
9:00  9:50  TOSHIYUKI TANISAKI, Osaka City
University Character formulas of KazhdanLusztig type II 
9: 50  10:20  Coffee Break 
10:20  11:10  YUN GAO, York University A primer to extended affine Lie algebras (Extended affine Lie algebras: representation) 
11:20  12:10  STEPHEN BERMAN, University of Saskatchewan
Covering algebras of KacMoody algebras and extended affine Lie algebras 
12:15  2:00  Lunch Break 
2:10  3:00  YURIY DROZD, University of Kiev
Vector bundles and CohenMacaulay modules I 
3:00  3:30  Afternoon Tea 
3:30  4:20  YURIY DROZD, University of Kiev
Vector bundles and CohenMacaulay modules II 
Sunday August 4 (no talks) 

Monday August 5 (Civic holiday  no talks)  
Tuesday August 6  
8:30  9:00  Continental breakfast 
9:00  9:50 
SUSUMU ARIKI, Kyoto University A tame/wild problem for Hecke algebras of type B 
9: 50  10:20  Coffee Break 
10:20  11:10  ZONGZHU LIN, Kansas State University
Hall algebras and their relations to quantized enveloping algebras 
11:20  12:10  ARTURO PIANZOLA, University of Alberta
Torsors and infinite dimensional Lie algebras 
12:20  2:00  Lunch Break 
2:00  2:50  BANGMING DENG, Beijing Normal University
Hall algebras and their relations to quantized enveloping algebras I 
2:50  3:10  Afternoon Tea 
3:10  4:00  KONSTANZE RIETSCH, University of
Oxford Introduction to perverse sheaves IV 
4:10  5:00  KONSTANZE RIETSCH, University of
Oxford Introduction to perverse sheaves V 
5:106:00  YOSHIHISA SAITO, University of Tokyo
Introduction to perverse sheaves and canonical bases I 
Wednesday August 7 

8:30  9:00  Continental breakfast 
9:00  9:50 
BANGMING DENG, Beijing Normal
University Hall algebra and their relations to quantized enveloping algebras II 
9: 50  10:20  Coffee Break 
10:20  11:10  YOSHIHISA SAITO, University of Tokyo
Introduction to perverse sheaves and canonical bases II 
11:20  12:10  YOSHIHISA SAITO, University of Tokyo
Introduction to perverse sheaves and canonical bases III 
12:20  2:10  Lunch Break 
2:10  3:00  OLIVIER SCHIFFMANN, Yale University
Hall algebra of the cyclic quiver 
3:10  3:30  Afternoon Tea 
3:30  4:20  OLIVIER SCHIFFMANN, Yale University
Elliptic algebras and weighted projective lines 
4:30  5:20  ZONGZHU LIN, Kansas State University Hall algebras and their relations to quantized enveloping algebras III 
Thursday August 8 

8:30  9:00  Continental breakfast 
9:00  9:50 
JAN SCHROER, University of Leeds
Irreducible components of varieties of modules 
9: 50  10:20  Coffee Break 
10:20  11:10  IGOR BURBAN, Universitaet Kaiserslautern
Derived categories of coherent aheaves on degenerations of elliptic curves 
11:20  12:10  YURIY DROZD, University of Kiev
Vector bundles and CohenMacaulay modules III 
12:20  2:00  Lunch Break 
2:00  2:50  JIE DU, University of New South
Wales Stratified algebras and representations of finite groups of Lie type 
2:50  3:10  Afternoon Tea 
3:10  4:00  VOLODYMYR MAZORCHUK, Uppsala University
Stratified algebras arising in Lie theory 
4:10  5:00  MATTHEW DYER, University of Notre
Dame Shellability and heighest weight representations 
5:106:00  J.E. HUMPHREYS, University of Massachusetts,
Amherst Cells in affine Weyl groups and reduced enveloping algebras 
Friday August 9 

8:30  9:00  Continental breakfast 
9:00  9:50 
KARIN ERDMANN, University of Oxford Tilting modules for Schur algebras 
9: 50  10:20  Coffee Break 
10:20  11:10  ALEXANDER S. KLESHCHEV, University
of Oregon Cartan determinants and Shapovalov forms 
11:20  12:10  PETER J. WEBB, University of Minnesota
Lie theory in the context of finite groups 
12:20  2:10  Lunch Break 
2:10  3:00  JIE DU, University of New South
Wales RingelHall algebras and the geometric setting ofquantum GL_n 
3:10  3:30  Afternoon Tea 
3:30  4:20  BRIAN PARSHALL, University of Virginia
TBA 
End of workshop  
Saturday August 10  
No talks are scheduled for Saturday. The Fields Institute can be used as a place for informal discussion. 