conformal transformation in nLab

Contents

Contents

Definition

A conformal transformation is a diffeomorphism that preserves a conformal structure (a conformal map). The group of conformal transformations is the conformal group.

Properties

• A bijective conformal transformation of the Riemann sphere (to itself) is also called a Möbius transformation.

• For p+q≥3p + q \geq 3 then the group of conformal transformations of ℝ p,q\mathbb{R}^{p,q} is ≃O(p+1,q+1)\simeq O(p+1,q+1)

• conformal geometry

• conformal connection

• conformal field theory

References

• Wolfgang Kühnel, Hans-Bert Rademacher, Liouville’s theorem in conformal geometry (pdf)

• Isadore Singer, Shlomo Sternberg, The infinite groups of Lie and Cartan. J. Anal. Math. 15, 1-114 (1965)

briefly reviewed in

• Shlomo Sternberg, Conformally flat geometry and supergeometry, section 3 of On charge conjugation, Comm. Math. Phys. Volume 109, Number 4 (1987), 649-679. (Euclid)