Jordan-von Neumann-Wigner 1934: a Jordan algebra is a commutative nonassociative R-algebra (a∘b = b∘a) satisfying the Jordan identity (a²∘b)∘a = a²∘(b∘a) for all elements a, b — a weakening of associativity that nonetheless forces…
Jordan-von Neumann-Wigner 1934: a Jordan algebra is a commutative nonassociative R-algebra (a∘b = b∘a) satisfying the Jordan identity (a²∘b)∘a = a²∘(b∘a) for all elements a, b — a weakening of associativity that nonetheless forces…