Penrose transform
COMPLEX ANALOGUE OF THE RADON TRANSFORM THAT RELATES MASSLESS FIELDS ON SPACETIME TO COHOMOLOGY OF SHEAVES ON COMPLEX PROJECTIVE SPACE
Penrose-Ward transform; Ward transform; Penrose–Ward transform; Ward correspondence; Twistor transform
In theoretical physics, the Penrose transform, introduced by , is a complex analogue of the Radon transform that relates massless fields on spacetime to cohomology of sheaves on complex projective space. The projective space in question is the twistor space, a geometrical space naturally associated to the original spacetime, and the twistor transform is also geometrically natural in the sense of integral geometry.