The Exterior Derivation and the Orders of Differential Forms on Contractible Algebras.
The image in of the set of closed 2-forms with preassigned kernel
The Lagrange complex
The natural linear operators
For natural numbers n ≥ 3 and r a complete description of all natural bilinear operators is presented. Next for natural numbers r and n ≥ 3 a full classification of all natural linear operators is obtained.
The obstacle problem for the -harmonic equation.
The Radon Transform for Forms of Type (1, 1) on a Complex Projective Space.
The Radon Transform for Forms of Type (1, 1) on Complex Projective Space (Erratum).
The topology of integrable differential forms near a singularity
Théorie des opérateurs différentiels gradués sur les formes différentielles
To the question about the maximum principle for manifolds over local algebras.
Topological charges and high dimensional instantons
Topology and closed characteristics of -contact manifolds.
Torsion and the second fundamental form for distributions
The second fundamental form of Riemannian geometry is generalised to the case of a manifold with a linear connection and an integrable distribution. This bilinear form is generally not symmetric and its skew part is the torsion. The form itself is closely related to the shape map of the connection. The codimension one case generalises the traditional shape operator of Riemannian geometry.
Total differential equations and the structure of fibre bundles
Toward the description in a smooth topos of the dynamically possible motions and deformations of a continuous body
Transformation de Poisson de formes différentielles. Le cas de l'espace hyperbolique.