Projective Geometry (Classic Reprint) - Softcover

Dowling, L. Wayland

 
9781451000696: Projective Geometry (Classic Reprint)

Synopsis

Master poles, polars, and quadric transformations in projective geometry.

A clear, structured introduction shows how polarities in a plane give rise to powerful transformations and the role of conics in these mappings. Learn how degeneracy, perspective, and inversions intertwine to shape geometric relationships. This edition explains the core ideas of poles and polars, fundamental lines and points, and how a quadric transformation connects lines to conics. It also covers inversions with respect to a circle, circular transformations, and the birational and involutoric properties that govern these maps, all with concrete descriptions and historical context.

  • How two polarities create quadric transformations and when such maps are degenerate or non-degenerate.
  • The concept of inversion with respect to a circle and how centers, radii, and polarity interact.
  • What makes circular transformations birational and, in some cases, involutoric.
  • Key exercises and historical notes that illuminate the development of these ideas.
Ideal for readers seeking a solid, accessible entry into the geometric transformations that underpin projective geometry and its applications.

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