This is equivalent to an ordinary (non-projective) representation of the double cover of SO(p,q, R ), which is a real Lie group called the spinor group Spin(p,q).

• 是旋转群(李群SO(n；R) )的投影表象中的元素，或更广义地说，是SO(p；q；R)群的投影表象中的元素，其中p + q = n for spinors in a space of nontrivial signature.