# Theorem detail

## Alias: Evans' Cancellation Theorem

Statement: Let $M$ be a right $R$ module. If the endomorphism ring of $M_R$ has stable range $1$, then $M$ is cancellable from direct sums in $Mod-R$.

### Reference(s)

• Edward Evans, Krull-Schmidt And Cancellation Over Local Ring, Pacific Journal Of Mathematics 46.1, (1973). 115-121.