This chapter focuses on gravitation. It first reviews some basic concepts of the Riemannian geometry and establishes notation. It then discusses the gravitational action, specifically the fermionic action. It introduces Einstein-, Lorentz-, and Weyl anomalies by violating the corresponding Einstein-, Lorentz-, and Weyl symmetries, and establishes consistency conditions. The equivalence of the Einstein- and Lorentz anomaly is demonstrated, and the covariant anomaly is discussed. Finally, the chapter treats gravitation on a BRS level, deriving the SZ chain of descent equations. Index theorems are use to carry out explicit anomaly examples.
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