1952•Mathematical Proceedings of the Cambridge Philosophical SocietyRequires access
Transformations depending on sets of associated points
T. G. Room
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Abstract
This paper falls into three sections: (1) a system of birational transformations of the projective plane determined by plane cubic curves of a pencil (with nine associated base points), (2) some one-many transformations determined by the pencil, and (3) a system of birational transformations of three-dimensional projective space determined by the elliptic quartic curves through eight associated points (base of a net of quadric surfaces).