For example , repeated applications of the associativity axiom show that the unambiguity of a • b • c = -LRB- a • b -RRB- • c = a • -LRB- b • c -RRB- generalizes to more than three factors .

For all a , b and c in G , the equation -LRB- a • b -RRB- • c = a • -LRB- b • c -RRB- holds .
