CLIFFORD AND THE ‘SQUARE ROOT’ IDEAS

@inproceedings{Trautman2009CLIFFORDAT,
  title={CLIFFORD AND THE ‘SQUARE ROOT’ IDEAS},
  author={Andrzej Trautman and Darwin},
  year={2009}
}
This review article begins with a short history of the notions associated with spinors; it describes several distinct ‘square root’ ideas occurring in connection with Clifford algebras, spin groups and pure spinors. Applications of pure spinors to geometry and physics are briefly presented. An appendix contains a simple derivation of the Vahlen-Ahlfors, fractional-linear form of Möbius transformations. 
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