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Sur la catégorie de Lusternik-Schnirelmann des algèbres de cochaînes

Bitjong Ndombol — 1991

Annales de l'institut Fourier

Nous introduisons une nouvelle définition d’un invariant bi $M$ cat pour une algèbre de cochaînes $A$ connexe et 1-connexe, de type fini sur un corps $k$ de caractéristique quelconque, et nous montrons d’une part, qu’il coïncide avec l’invariant $𝒜$ cat introduit par S. Halperin et J.-M. Lemaire et d’autre part, qu’il est invariant par extension de corps et qu’il vérifie la conjecture de Ganéa.

Acat invariant of quasi-commutative algebras. (L'invariant Acat des algèbres quasi-commutatives.)

Ndombol, Bitjong — 1997

Bulletin of the Belgian Mathematical Society - Simon Stevin

On the Connes operator in Hochschild homology.

Ndombol, Bitjong — 2005

AMA. Algebra Montpellier Announcements [electronic only]

On lifts of some projectable vector fields associated to a product preserving gauge bundle functor on vector bundles

A. Ntyam; G. F. Wankap Nono; Bitjong Ndombol — 2014

Archivum Mathematicum

For a product preserving gauge bundle functor on vector bundles, we present some lifts of smooth functions that are constant or linear on fibers, and some lifts of projectable vector fields that are vector bundle morphisms.

Some further results on lifts of linear vector fields related to product preserving gauge bundle functors on vector bundles

A. Ntyam; G. F. Wankap Nono; Bitjong Ndombol — 2016

Archivum Mathematicum

We present some lifts (associated to a product preserving gauge bundle functor on vector bundles) of sections of the dual bundle of a vector bundle, some derivations and linear connections on vector bundles.

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