On the algebraic structure of covariant anomalies and covariant Schwinger terms

The algebraic structure of covariant anomalies and covariant Schwinger terms in an anomalous Yang-Mills theory is investigated. A cohomological characterization is formulated and geometrically interpreted. A new method of determining covariant anomalies and covariant Schwinger terms based on the BRS-anti-BRS complex is presented.