Welcome on my home page !
la version francaise de tout ca se trouve
ICI
My name is
Eric Chopin and I've been
a Researcher in Theoretical Physics (elementary particles) and
for 2 years a maths teacher in Grenoble (France). Now I work as a software developer since
sept. 2000 and more specifically in the IT department of a company based in Geneva.


Realizations and interests:
My research interests include:
 Explicitely gauge invariant reformulation for gauge theories.
 Interacting asymptotic states.
 Nonlinear gauges and gauge invariant calculation of scattering amplitudes.
 The concept of "Canonical proof",
which consists in writing the proof of a theorem without using
any arbitrary element inside (for instance an arbitrary Cartan
Subalgebra for the classification of semisimple Lie algebras), and respecting symmetries.
That is to say, a proof
which respects the symmetries that exists in the hypothesis and the conclusion.
I conjecture that for any proovable theorem, which does not require the axiom of choice
(nor weaker versions of this axiom), and that has at least one symmetry that is valid
among the hypothesis and the conclusion, there exists a canonical proof.
List of my scientific publications
My math lectures (in french)  LaTeX4Web: my LaTeX to HTML converter
An interesting math problem with one open question ...
Here are some links and tips about computing in various languages (C, Java, ...)
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 THE WAR IS DECLARED AGAINST SPAM AND ADVERTISEMENT POPUPS. See how to fight against this new plague...

BE AWARE ABOUT VIRUS HOAXES (these email that
are sent to create a panic. Then, the number of warning messages
increases exponentially because of the panic and networks become
saturated (this is actually the goal of these hoaxes)
 If you want to see the danger of sects, click for instance on
SCIENTOLOGY
 You will find
HERE
the report to the french parliament about sects (412kb). The
is in progress (still far from
being completed.... :( ) .
More reports are available on the site of the
french parliament.
 A
list of sects extracted from the report of the
french parliament.

HOMEOPATHY IS DANGEROUS!!! It has never been
proved efficient yet, although some homeopathic
products are reimbursed by the french Social Security!
If you eat the whole content of one tube at 12CH, then you may
eat only one active molecule. If the dilution is more important
(say 15CH), then you must eat one million tubes to have a
chance to eat only one active molecule. Imagine
how many tubes you'd have to eat at 20CH or 40CH
dilutions!!! However, homeopathy claims that 20CH or 40CH
are more efficient than 12CH!!!!
 The Nizkor project is a gathering of information about
what happened during World War II and highlights the
mystification done by revisionnists:
Nizkor Project.
The aim of this project is to fight against the propaganda
of NeoNazi groups on internet.
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Just for fun
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Links
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Last update : 02/01/2004
Email:eric.chopin@wanadoo.fr
(Note, this email is encrypted so that spammers cannot catch it using robots, see how...