Basic notions and results on Hyperstructure Theory.- 1 Some topics of Geometry.- 2 Graphs and Hypergraphs.- 3 Binary Relations.- 4 Lattices.- 5 Fuzzy sets and rough sets.- 6 Automata.- 7 Cryptography.- 8 Codes.- 9 Median algebras, Relation algebras, C-algebras.- 10 Artificial Intelligence.- 11 Probabilities.