T1W4I1S1T1O1R1S1
11 points
TWISTORS is validvalid
TWISTOR, a complex variable in descriptions of space-time [n]
TWISTOR, a complex variable representing space-time coordinates [n]
TWISTOR, a complex variable in descriptions of space-time [n]
TWISTOR, a complex variable representing space-time coordinates [n]