Geodesics and Submanifold Structures in Conformal Geometry

A conformal structure on a manifold $M^n$ induces natural second order conformally invariant operators, called M"obius and Laplace structures, acting on specific weight bundles of $M$, provided that $n\ge 3$. By extending the notions of M"obius and Laplace structures to the case of surfaces and curves, we develop here the theory of extrinsic conformal geometry for submanifolds, find tensorial invariants of a conformal embedding, and use these invariants to characterize various forms of geodesic submanifolds.