Index - R
| Real | Data.Semifield |
| recip | Data.Semigroup.Additive, Data.Semifield |
| Rep | Data.Semimodule.Transform |
| Representable | Data.Semimodule.Transform |
| RightModule | Data.Semimodule |
| RightSemimodule | Data.Semimodule |
| Ring | Data.Semiring |
| RingLaw | Data.Semiring |
| row | Data.Semimodule.Transform, Data.Semimodule.Free |
| rows | Data.Semimodule.Transform, Data.Semimodule.Free |
| rscale | Data.Semimodule |
| rscaleDef | Data.Semimodule |