Cohomology of Groups and Geometric Topology

• Special Session at the A.M.S. 1995 Fall Eastern Section Meeting
• Dates: October 7-8, 1995
• Place: Northeastern University, Boston, MA
• Co-organizer: Solomon Jekel
• The session featured talks by 18 invited speakers

Arrangements in Boston: A Conference on Hyperplane Arrangements

• Dates: June 12-15, 1999
• Place: Northeastern University, Boston, MA
• Co-organizers: Dan Cohen and David Massey
• Supported by a grant from the National Science Foundation, and by Northeastern University
• The conference, which drew about 80 participants, featured 28 invited speakers and a poster session
• The proceedings of the conference appeared as a Special Issue (Volume 118, Issue 1-2, February 2002) of Topology and its Applications

Arrangements of Hyperplanes

• Workshop and Special Session at the A.M.S. 2000 Fall Eastern Section Meeting
• Dates: November 3-5, 2000
• Place: Columbia University, New York, NY
• Co-organizer: Michael Falk
• The workshop and the special session featured talks by 26 invited speakers

XVIth Annual Geometry Festival

• Dates: April 20-22, 2001
• Place: Northeastern University, Boston, MA
• Co-organizers: Chuu Lian Terng, Maxim Braverman, Chris King, Mikhail Shubin, and Gang Tian
• Supported by the National Science Foundation
• The conference, which drew some 107 participants, featured 7 invited speakers

Miniworkshop on Cohomology Jumping Loci

• Dates: March 3-9, 2002
• Place: Mathematisches Forschungsinstitut, Oberwolfach, Germany
• Co-organizer: Sergey Yuzvinsky
• The miniworkshop featured 13 invited partipants
• Here is a group photo, an (inverted!) organizers photo, and the workshop report

Arrangements in Topology and Algebraic Geometry

• Special Session at the A.M.S. 2003 Spring Southeastern Section Meeting
• Dates: March 14-16, 2003
• Place: Louisiana State University, Baton Rouge, LA
• Co-organizer: Dan Cohen
• The session featured talks by 15 invited speakers

MSRI Summer Graduate Program on Hyperplane Arrangements and Applications

• Dates: August 1-13, 2004
• Sponsored by: Mathematical Sciences Research Institute, Berkeley, CA
• Place: University of Oregon, Eugene, OR
• Co-organizers: Michael Falk, Hiroaki Terao, and Sergey Yuzvinsky
• Over 20 graduate students from various institutions participated in this MSRI summer school

MSRI Introductory Workshop in Hyperplane Arrangements and Applications

• Part of the MSRI program on Hyperplane Arrangements and Applications
• Dates: August 23-27, 2004
• Place: Mathematical Sciences Research Institute, Berkeley, CA
• Co-organizers: Michael Falk, Peter Orlik, Hiroaki Terao, and Sergey Yuzvinsky

Workshop on Topology of Arrangements and Applications

• Part of the MSRI program on Hyperplane Arrangements and Applications
• Dates: October 4-8, 2004
• Place: Mathematical Sciences Research Institute, Berkeley, CA
• Co-organizers: Daniel C. Cohen, Michael Falk, Peter Orlik, Inna Scherbak, Hiroaki Terao, and Sergey Yuzvinsky

Hyperplane Arrangements: Cohomology and Rational Homotopy

• Dates: June 11-18, 2005
• Place: Banff International Research Station, Banff, Alberta, Canada
• Co-organizer: Graham Denham
• This Focussed Research Group consisted of 7 invited partipants; here is a group photo and a photo album

Arrangements and Configuration Spaces

• Workshop and Special Session at the A.M.S. 2006 Spring Eastern Section Meeting
• Dates: April 21-23, 2006
• Places: Northeastern University, Boston, MA and University of New Hampshire, Durham, NH
• Co-organizer: Graham Denham

Miniworkshop on Topology of Closed 1-Forms and Cohomology Jumping Loci

• Dates: August 12-18, 2007
• Place: Mathematisches Forschungsinstitut, Oberwolfach, Germany
• Co-organizers: Michael Farber and Sergey Yuzvinsky
• The miniworkshop featured 16 invited partipants
• Here is a group photo, an organizers photo, and the workshop report
• The workshop report has been published in Oberwolfach Reports, Volume 4, Issue 3, 2007, pp. 2321-2360.