- 
	 Characterization of the convergent sequences using linear combinations of k succesive terms
- 
	 Characterization of the Darboux functions. Applications
- 
	 Inequality of triangle type
- 
	 On some functional equations
- 
	 On some recurrent sequence
- 
	 On the existence of primitives of some real functions
- 
	 On the solutions of some functional equations over the set of continuous functions
- 
	 Polygons having the same center of gravity
- 
	 Segments and traights lines which contain the center of the inscribed circle in a triangle. Properties
- 
	 The determination of some group isomorphisme
- 
	 The duality in the study of homographic recurrent sequences
- 
	 The upper and lower limit sequence of real numbers
