in London,
during 16 - 18 July, 2007,
under the auspices of London Mathematical Society,
of Institute of Physics
and of Doppler Institute,
with
proceedings published in
special issue dedicated to the physics of non-Hermitian operators:
Carl Bender (Washington University, St Louis, USA)
Patrick Dorey (Durham University, UK)
Thomas Curtright (University of Miami, USA)
Hendrik Geyer (University of Stellenbosch, South Africa)
Joshua Feinberg (University of Haifa, Israel)
Ali Mostafazadeh (Koc University, Istanbul, Turkey)
Michael Ogilvie (Washington University, St Louis, USA)
Roberto Tateo (University of Turin, Italy)
Miloslav Znojil (Rez Nuclear Physics Institute, Prague, Czech Republic)