Aix-Marseille Université
Institut de Mathématiques de Marseille (I2M) - UMR 7373 Site Saint-Charles : 3 place Victor Hugo, Case 19, 13331 Marseille Cedex 3 Site Luminy : Campus de Luminy - Case 907 - 13288 Marseille Cedex 9
Abstract : Associativity is one of the most fundamental properties in mathematics. Almost all natural operations you can think of are associative : concatenation, union [...]