Good News and Bad News
Jean-François COLONNA
www.lactamme.polytechnique.fr
jean-francois.colonna@polytechnique.edu
CMAP (Centre de Mathématiques APpliquées) UMR CNRS 7641, Ecole Polytechnique, CNRS, 91128 Palaiseau Cedex, France
france telecom, France Telecom R&D
[Site Map, Help and Search [Plan du Site, Aide et Recherche]]
[The Y2K bug [Le bug de l'an 2000]]
[Do you believe that Real Numbers exist for a computer and that floating point computations are safe?]
[Please, visit A Virtual Space-Time Travel Machine, the place where you can find thousands of pictures and animations between Art and Science]
(CMAP28 WWW site: this page was created on 01/25/2001 and last updated on 11/03/2018 12:03:37 -CET-)
[en français/in french]
Books:
- Images du virtuel (Addison Wesley, 02/1994).
- LE BUG DE L'AN 2000 (Flammarion, 03/1999).
- A quoi servent les Mathématiques? (rue des écoles, 02/2016).
Some exhibitions:
- The gigantic Lorenz attractor at La Cite des Sciences et de l'Industrie in Paris, 2000-2001.
- An exhibition at La Cite des Sciences et de l'Industrie in Paris, 2001
- Le Paris du Futur exhibition at La Galerie de l'ADAC in Paris, 2002.
- An exhibition at Le Centre Culturel Rene Cassin in Dourdan, 2002
- An exhibition with Denis Fadier at UNESCO in Paris, 2002.
- An exhibition at the ENST Bretagne in Brest, 2003.
- An exhibition at the Ecole Polytechnique, 2004.
- The eightyth birthday of Benoît Mandelbrot, 2004.
- World Year of Physics 2005, two exhibitions at the Ecole Polytechnique, 2005.
- The Auguste Detœuf Room at the Ecole Polytechnique, 2005.
- The "Math En Rue" festival, Bruxelles City Hall, 2009.
- The exhibition at the Atelier Z (Fondation Peugeot), 2009.
- An exhibition with Patrice Jeener at the Ecole Polytechnique, 2010.
- The tribute to Benoît Mandelbrot, 2011.
- An exhibition at the Ecole Polytechnique, 2013.
- An exhibition at La Nuit des Chercheurs 2013 at the Ecole Polytechnique, 2013.
- An exhibition with Patrice Jeener at the Ecole Polytechnique, 2015.
- An exhibition at the Lycée Louis le Grand, 2015.
- An exhibition at the Ecole Polytechnique during la Fête de la Science, 10/2015.
- An exhibition at the 'Centre Culturel Français' and at the 'lycée Galatasaray' at Istanbul, 03/2018.
- An exhibition at 'la Mairie du cinquième arrondissement de Paris', 03/2018.
- An exhibition "Tribute to Artists and Scientists" at the Ecole Polytechnique during la Fête de la Science, 10/2018.
- An exhibition at UNESCO, Paris, 11/2018.
- 2837 different people were visiting this site on 09/28/2004.
- See A Virtual Space-Time Travel Machine in the 1997 March-April
issue of IEEE Computer Graphics and Applications
(About the Cover, The Art of Science, page 4-5, Volume 17, Number 2).
- See the picture on the cover of 1998 issues of
The Visual Computer.
- See the gigantic -40mx20m- Lorenz attractor at
La Cite des Sciences et de l'Industrie in Paris in order to celebrate
the Year 2000 (currently, the biggest painting in Paris?). Unfortunately,
it was dismantled in late 2001 (see the original picture ).
- See the following pictures in the new Images exhibition at La Cite des Sciences et de l'Industrie in Paris (inaugurated on 06/28/2001):
- See the following pictures in the Le Paris du Futur exhibition at La Galerie de l'ADAC in Paris (inaugurated on 03/21/2002):
- See the following pictures in the exhibition at Le Centre Culturel Rene Cassin in Dourdan (inaugurated on 06/01/2002):
- See the following pictures in the exhibition -with Denis Fadier- at UNESCO on the occasion of the celebration of World Science Day for Peace and Development in Paris (inaugurated on 11/12/2002):
- See the following pictures in the exhibition at ENST Bretagne in Brest (inaugurated on 04/02/2003):
- See the following pictures in the exhibition at the Library of the Ecole Polytechnique in Palaiseau (inaugurated on 06/10/2004):
- 2004: the eightyth birthday of Benoît Mandelbrot:
- A private collection in Paris:
- See the following pictures in the exhibition at the Institut Henri Poincare in Paris (inaugurated on 01/22/2005):
- World Year of Physics 2005, see the following pictures in two exhibitions at the Ecole Polytechnique inaugurated
on 05/11/2005
and
on 10/07/2005:
- See the following pictures in the Auguste Detœuf Room at the Ecole Polytechnique (inaugurated on 09/15/2005):
- See my pictures on the Bruxelles City Hall during the "Math En Rue" festival on 10/16/2009:
- See the following pictures in the exhibition at the Atelier Z (Fondation Peugeot) in Paris (inaugurated on 10/22/2009):
- See my pictures (as well as the Patrice Jeener's ones) in an exhibition at the Ecole Polytechnique on september 2010:
- See my pictures during the tribute to Benoît Mandelbrot (03/17-18/2011):
- See my pictures in the exhibition at the Library of the Ecole Polytechnique in Palaiseau on september 2013 (inaugurated on 08/26/2013):
[more information]
Mathematics and Physics:
Mathematics and Nature:
Mathematics and Encounters:
Mathematics and Creation:
See the whole exhibition:
- See my anaglyphs in the exhibition at La Nuit desChercheurs 2013 at the Ecole Polytechnique in Palaiseau on 09/27/2013:
- Anaglyph -blue=right, red=left- of a tridimensional representation of a quadridimensional Calabi-Yau manifold.
- Anaglyph -blue=right, red=left- of a tridimensional fractal structure.
- Anaglyph -blue=right, red=left- of a tridimensional fractal structure -the space-time foam?-.
- Anaglyph -blue=right, red=left- of a fractal Möbius strip.
- Anaglyph -blue=right, red=left- of a fractal Klein bottle.
- Anaglyph -blue=right, red=left- of a fractal sphere.
- Anaglyph -blue=right, red=left- of a tridimensional filamentous fractal structure.
- Anaglyph -blue=right, red=left- of a fractal torus.
- Anaglyph -blue=right, red=left- of a fractal 3-foil torus knot.
- Anaglyph -blue=right, red=left- of a fractal 5-foil torus knot.
- Anaglyph -blue=right, red=left- of a fractal 7-foil torus knot.
- Anaglyph -blue=right, red=left- of a fractal hypercube.
- Anaglyph -blue=right, red=left- of a fractal-fractal tree.
- Anaglyph -blue=right, red=left- of an hypercube.
- Anaglyph -blue=right, red=left- of the tridimensional Hilbert Curve -iteration 3-.
- Anaglyph -blue=right, red=left- of the tridimensional Hilbert Curve -iteration 4-.
- Anaglyph -blue=right, red=left- of an artistic view of a pyramidal Menger sponge computed by means of an 'Iterated Function System' -IFS-.
- Anaglyph -blue=right, red=left- of the Lorenz attractor.
- Anaglyph -blue=right, red=left- of a pseudo-quaternionic Mandelbrot set (a 'MandelBulb') -'the children round' or 'the consciousness emerging from Mathematics'- -tridimensional cross-section-.
- Anaglyph -blue=right, red=left- of a close-up on a pseudo-octonionic Mandelbrot set (a 'Mandelbulb') -tridimensional cross-section-.
- See my pictures (as well as the Patrice Jeener's ones) in the exhibition at the Library of the Ecole Polytechnique in Palaiseau on january and february 2015:
then at the Lycée Louis le Grand in Paris on march 2015:
- An exhibition at the Ecole Polytechnique during la Fête de la Science, 10/2015.
- An exhibition at the 'Centre Culturel Français' and at the 'lycée Galatasaray' at Istanbul, 03/2018.
Tridimensional accumulation of 512 correlated bidimensional brownian motions -50000 time steps-.
A foggy pseudo-octonionic Julia set ('MandelBulb' like: a 'JuliaBulb') computed with A=(-0.58...,+0.63...,0,0,0,0,0,0) with a rotation about the X axis -tridimensional cross-section-.
Close-up on a foggy pseudo-octonionic Julia set ('MandelBulb' like: a 'JuliaBulb') computed with A=(-0.58...,+0.63...,0,0,0,0,0,0) with a rotation about the X axis and with a tridimensional non linear transformation in the pseudo-octonionic space -tridimensional cross-section-.
Tridimensional high resolution visualization of the Verhulst dynamics -'Time Ships', a tribute to Stephen Baxter-.
A pseudo-octonionic Mandelbrot set (a 'MandelBulb') -'children's corner' or 'the consciousness emerging from Mathematics'- -tridimensional cross-section-.
Close-up on a foggy pseudo-quaternionic Mandelbrot set with a (1/O)^1 conformal transformation in the Octonionic space -tridimensional cross-section-.
An amazing cross-section inside the Menger sponge -iteration 5-.
An amazing cross-section inside the Menger sponge -iteration 5- with a (4xO+1)/(1xO-1) conformal transformation in the Octonionic space -tridimensional cross-section-.
Botticelli anomaly on the Moon.
Mountains and fog.
Monument Valley at sunrise.
The Mathematics are the key of the Multiverse.
- An exhibition at 'la Mairie du cinquième arrondissement de Paris', 03/2018.
- An exhibition "Tribute to Artists and Scientists" at the Ecole Polytechnique during la Fête de la Science, 10/2018.
Light clouds at sunset
A 'pyramidal' cross-section inside the Menger sponge -iteration 5-, 'O temps tes pyramides' -a tribute to Jorge Luis Borges-
Tridimensional accumulation of 50 non correlated tridimensional brownian motions -50000 time steps-
Foggy Babel Tower -a tribute to Brueghel the Elder-
From geocentrism to 'Neptune-centrism' -a tribute to Nicolas Copernic-
Where is the Universe -a tribute to Albert Einstein-?
My own triple impossible staircase -a tribute to M.C. Escher-
Metropolis -a tribute to Fritz Lang-
Fractal Self-Portrait -a tribute to René Magritte-
A pseudo-periodical Penrose tiling of the plane -a tribute to Piet Mondrian and Roger Penrose-
The Scream -a Tribute to Edvard Munch-
Artistic view of an hexagonal tiling of the hyperbolic Poincaré disk -iteration 5-, -a tribute to Henri Poincaré-
Quaternionic butterfly with extended arithmetics -a tribute to Laurent Schwartz-
Tridimensional visualization of the Verhulst dynamics -'The Flying Dutchman', a tribute to Richard Wagner-
- An exhibition at UNESCO, Paris, 11/2018.
- On 02/28/1996, the McKinley Group (MagellanInternetDirectory)
gave A Virtual Space-Time Travel Machine a "3-star" overall rating.
- On 04/11/1996, NetCarta Corporation
gave A Virtual Space-Time Travel Machine a "Great Site" overall rating.
- On 09/18/1996, the Central Registry
gave A Virtual Space-Time Travel Machine a free use of its Registration Service.
- On 07/23/1998, the Links2Go Key Resource
gave A Virtual Space-Time Travel Machine an award in the Animation topic.
- On 07/11/2000, the Links2Go Key Resource
selected A Virtual Space-Time Travel Machine as a "Key Resource" in the Fractals topic.
- Since 11/23/2001, Only-Yellow-Pages global online directory
reference A Virtual Space-Time Travel Machine.
- The Y2K bug.
[more information in english,
more information in french]
- Do you believe that Real Numbers exist for a computer and that floating point computations are safe?
[more information]
- Do you believe that floating point computations using Java
are write once, run everywhere?
[more information in french]
- Droit de réponse to Science et Avenir -en français/in french-.