Date of this Version
Bull. London Math. Soc. 45 (2013) 1235–1245 doi:10.1112/blms/bdt052
We study differential graded algebras (DGAs) whose homology is an exterior algebra over a commutative ring R on a generator of degree n, and also certain types of differential modules over these DGAs. We obtain a complete classification with R = Z or R = Fp and n ≥ –1. The examples are unexpectedly interesting.