Generalized Heisenberg Model of SpinSGreater than 1/2 Equivalent to that of Spin 1/2

It is shown that there exists a generalized Heisenberg model of half-odd-integral spin S greater than 1/2 corresponding to the model of spin 1/2, and we have exactly solved models of half-odd-integral spin S greater than 1/2 corresponding to exactly solved models of spin 1/2.