Solution de la question proposée au concours pour les deux académies de Montpellier et d'Aix (année 1870)
Solution des exercices sur le tétraèdre proposés par M. Genty
Solution des questions de géométrie élémentaire proposées par M. Casimir Rey (voir même tome, p. 273)
Solution d'un problème de géométrie
Solution d'une question du concours d'agrégation de 1864
Solution d'une question du concours d'agrégation de 1865
Solution d'une question géométrique
Solution d'une question proposée par M. Catalan
Solution of Moufang problems.
Solvable collineation groups of smooth projective planes.
Solvable linear groups on vector spaces whose dimension is the product of two primes.
Some Amalgams of type 2A6 in a field of characteristic 3
Some cases of compatibility of the tangency relations of sets.
Some characteristic and non-characteristic properties of inner product spaces
Some characterization theorems for the discrete holometric space.
Some Characterizations of Finite Miquelian Möbius Planes.
Some combinatorial properties of conics in the Hjelmslev plane
Some combinatorial results on the classification of lines in Desarguesian Hjelmslev planes
Some Connections between Minkowski and Hyperbolic Planes
The model of the Minkowski plane in the projective plane with a fixed conic sheds a new light on the connection between the Minkowski and hyperbolic geometries. The construction of the Minkowski plane in a hyperbolic plane over a Euclidean field is given. It is also proved that the geometry in an orthogonal bundle of circles is hyperbolic in a natural way.
Some cyclical inequalities for the triangle.