Noncommutative Riemannian Spin Manifolds
摘要
This chapter introduces the mainRiemannian spin manifold technicalNoncommutative Riemannian spin manifolds deviceSpin manifold—spectral triplesSpectral triple—that generalizes Riemannian spin geometryRiemannian spin geometry to the noncommutative world. We exemplify this by means of toric noncommutative manifoldsToric noncommutative manifolds; this includes the noncommutative torusNoncommutative torus.