I will not try to give a general prescription for solving these equations for 6(K ), but , instead, will illustrate the method by finding 8(K) in two particular cases. The first case we consider is when there is fourfold rotational symmetry, and no mirror symmetry, so that (D 2) and (D 5) do not ... Avron, J. aamp; Simon, B. 1983 Duke math.
|Title||:||Proceedings of the Royal Society of London. Series A. Mathematical and physical sciences|