Francesco Calogero is an emeritus
professor at the Physics Department of the University of Rome "La
Sapienza". His current research in mathematical and theoretical physics is
focused on isochronous systems and related mathematical results.
Francesco Calogero published over
380 papers and four books on scientific topics. His exploration of science and
society issues related to arms control and disarmament has resulted in over 440
papers and two books. Francesco Calogero co-edited, with M. Goldberger and S.
Kapitza, a multi-authored monograph on verification for the purpose of
monitoring disarmament, published in English in the United States (1990) and in
Russian in the Soviet Union (1991). Each chapter of the book was coauthored by
eminent scientists and politicians on both sides of the Cold War divide; it was
the first book on such a sensitive topic to have this feature.
From 1982 to 1992 Francesco
Calogero was a member of the Governing Board of the Stockholm International
Peace Research Institute (SIPRI), from 1989 to 1997 he served as Secretary
General of the Pugwash Conferences on Science and World Affairs, and in that
capacity he accepted, on behalf of Pugwash, the 1995 Nobel Peace Prize awarded
to Joseph Rotblat and to Pugwash “for their efforts to diminish the part played
by nuclear arms in international politics and in the longer run to eliminate
such arms.” From 1997 to 2002 he served as Chairman of the Pugwash Council, of
which he is now an ex officio member.
A World Free of Nuclear Weapons: Desirable?
We will underline the special
character of nuclear weapons and will discuss the desirability and the
feasibility of a nuclear-weapon-free world.Some past activities promoting nuclear disarmament and the transition to
a nuclear-weapon-free world will be reviewed. We will discuss the significant
developments initiated by the January 2007 Wall Street Journal op-ed coauthored
by Shultz, Perry, Kissinger and Nunn, which culminated in the April 2009 Prague
speech by President Obama. Finally, we will outline recent developments and
future steps toward a nuclear-weapon-free world.
The social responsibility of scientists: the
Pugwash Conferences on Science and World Affairs
As an example of the
implementation of the social responsibility of scientists, we will outline a
terse history and mention current activities of the Pugwash Conferences on Science and World
Affairs. This organization is a recipient -- jointly with Joseph Rotblat, then
President of Pugwash -- of the 1995
Nobel Peace Prize "for their efforts to diminish the part played by nuclear
arms in international politics and in the longer run to eliminate such
"cool" a number such that its decimal representation (for simplicity,
we stick to the standard representation in base 10)
has a remarkable look. For instance, the fraction 10/81=2*5/3^4 has the decimal
representation 0.[1234567 90]and the fraction 1000/998001=2^3*5^3/(3^6*37^2) has the decimal
representation 0.[001 002 003 ... 009 010 011 ... 099 100 101 ... 996 997 999 000]. In these decimal expressions blanks have been introduced merely as
visual aids (they should be ignored, having no mathematical significance), dots
indicate many digits to be filled in by obvious interpolation, and square
brackets indicate that the digits inside them (9 in the first
example, 999*3=2997 in the second) are
to be repeated periodically ad infinitum. Another cool number having no periodic
part in its decimal representation is
A technique to
identify such numbers will be described.
Reference: F. Calogero, Cool
Irrational Numbers and Their Rather Cool Rational Approximations, Mathematical Intelligencer25, 72-76 (2003).
C. Wollan Memorial Distinguished Lectureship
The T. C. Wollan Memorial Distinguished Lectureship
was founded in the mid-1960s with unrestricted funds received from the National
Science Foundation in connection with the NSF Undergraduate Research
Participation programs at Concordia College at that time. The lectures were
named to honor the memory of Thomas Carl Wollan, who was remembered with
fondness and respect as one of the founders of the mathematics program at