[Todos CMAT] tres noticias matemáticas
Dr. Roberto Markarian
roma en fing.edu.uy
Dom Oct 2 02:44:11 UYT 2016
Preparing IMO 2017 and ICM 2018
In a ceremony I attended some time ago, Fields Medalist Artur Avila
took the occasion to remind all journalists present of what he
referred to (only half-jokingly, I suspect) as the “event of the
decade in Rio de Janeiro: the International Congress of Mathematicians
ICM 2018”. With a few “rehearsals”, such as the 2014 FIFA World Cup
finals and the 2016 Olympic Games, now behind us, and the Paralympic
Games soon to be over as well, Brazil is indeed becoming increasingly
aware of its role as the host of the first ICM in the southern
hemisphere. And the fact that the country´s recent troubles seem to be
subsiding adds a note of optimism about it.
There are also local reasons for mathematics to make the headlines,
though less pleasant: official data showing that progress in basic
education is stalled, at best, have reignited the discussion on how to
change the situation of mathematical teaching in our schools. The
Biennium of Mathematics 2017-2018 is the latest response from the
academic community.
A tribute to the coming realization of ICM 2018 (www.icm2018.org), and
the International Mathematical Olympiad IMO 2017 (www.imo2017.org.br),
both in Rio de Janeiro, the Biennium of Mathematics is a broad
initiative sponsored by Brazil´s federal parliament, which aims to
bring mathematics closer to the whole society, children and their
families, pupils and their teachers, through a series of activities to
be put in place across the country during the next two years. The
official launching will be at the first Brazilian Math Festival,
scheduled for 27-30 April, 2017.
In the meantime, the Organizing Committees of ICM 2018 and IMO 2017
are also working hard on the practical preparations for the two
events, with the support of IMPA and the Brazilian Mathematical
Society. Venues for both meetings, as well as for the IMU General
Assembly 2018, have been booked and accommodation options for the
General Assembly delegates have also been informed in the latest ICM
Newsletter. Moreover, we started pre-registering voluntaries.
In the next months we will setting a timeline for several other
important steps to come, including submission of abstracts, requests
for financial support (from mathematicians in developing countries)
and registration to attend the Congress and the General Assembly. Keep
also in mind that by mid-December we will have the second deadline for
submissions of satellite meetings proposals.
Marcelo Viana
Chair of the ICM 2018 OC
CEIC: Notes and Comments
Improved math rendering in Wikipedia using MathML
As of May 31, 2016, Wikipedia is using a new approach for rendering
mathematical formulae. Bitmap images representing formulae were
replaced with a combination of MathML (the web standard for
mathematics on the web) and a fallback mechanism, which was introduced
for browsers that do not support this web standard.
This approach makes formulae, machine readable and accessible to users
with limited vision; and they look crisper on high resolution displays
and in print. Moreover, it is now possible to copy and paste formulae
into Microsoft Word or Wolfram Mathematica.
This approach was developed by MathML Association director, Moritz
Schubotz. Find out more at
http://mathml-association.org/announcement/2016/05/31/wikipedia.html
or read our paper at http://cicm-conference.org/2016/ceur-ws/W48.pdf .
Tribute to Jean-Christophe Yoccoz
Jean-Christophe Yoccoz died on September 3rd, 2016. With the passing
away of Jean-Christophe Yoccoz, the Collège de France has lost one of
its most brilliant members, a truly dazzling mathematician, who
quickly emerged as the world leader in the theory of dynamical systems
initiated in the late 19th century by Henri Poincaré. The theory deals
with the long-term qualitative behavior of dynamical systems. It
involves, for instance, understanding whether the solar system is
stable. Can a planet suddenly be ejected from the system? Two types of
radically different behaviors come into play. Either the movement can
exhibit stable and "predictable" features or else it can exhibit
chaotic features. The work carried out by Prof. Yoccoz provided
greater insight into the boundary between these two behaviors.
As a former student of the École Normale Supérieure where he ranked
first for the admissions exam in 1975, at the age of 18, and gold
medal winner at the International Mathematical Olympiad in 1974,
Jean-Christophe Yoccoz completed his thesis under Michael Herman in
1985 and was awarded the Fields Medal in 1994. In the same year, he
became a member of the French Academy of Sciences and the Academy of
Sciences in Brazil. In 1996, he took up the position of professor at
the Collège de France for the Chair in Differential Equations and
Dynamical Systems.
He obtained a number of decisive results for the most challenging
problems related to dynamical systems, and his demonstrations combined
extraordinary analytical prowess, superb geometric vision and utter
mastery of the combinatorics illustrated by what is now referred to as
"Yoccoz puzzles".
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