De l'infinitésimal au local (Thèse de Doctorat d'État)
Diameter-Extremal Subsets of Spheres.
Die Ableitung einer Formel für die Polarabsteckung der Klothoide und die Fehlerveranschlagung
Differential forms with values in groups (preliminary report)
Discrete Laplace cycles of period four
We study discrete conjugate nets whose Laplace sequence is of period four. Corresponding points of opposite nets in this cyclic sequence have equal osculating planes in different net directions, that is, they correspond in an asymptotic transformation. We show that this implies that the connecting lines of corresponding points form a discrete W-congruence. We derive some properties of discrete Laplace cycles of period four and describe two explicit methods for their construction.
Distance-preserving maps in generalized polygons. I: Maps on flags.
Distributions and heat equation in
Dividing an arc to subarcs with equal chords