En résumé (grâce à un LLM libre auto-hébergé)

The document deals with the inversion of the sphere and concepts related to geometry and topology.

It covers topics such as immersions, double coverings and the Boy surface.

Links to studies and theories by mathematicians such as Bernard Morin and J.P. Petit are mentioned.

Sphere inversion and topology

The Sphere Inversion

and other stories of the same kind

December 7, 2004

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Immersions. Double coverings. First approach to the Boy surface

Intermezzo: The "father - mutation" of the cusp points of a Crosscap

Catastrophic modifications

The sphere inversion according to Bernard Morin

The trivial inversion of the torus

The non-trivial inversion of the torus

J.P.Petit, 1961

********Link| Other topic: Transforming a Cross Cap into a Boy surface | ( | J.P.Petit 1990 | ) : |
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( take some aspirin, otherwise return to the Home page )

Turnover of the sphere and topology