| abs | Control.Category.Hask, Control.Category.Constrained.Prelude |
| acos | Control.Category.Hask, Control.Category.Constrained.Prelude |
| acosh | Control.Category.Hask, Control.Category.Constrained.Prelude |
| AgentVal | Control.Category.Constrained, Control.Category.Constrained.Prelude, Control.Category.Constrained.Prelude |
| alg | Control.Category.Constrained, Control.Category.Constrained.Prelude |
| alg1to2 | Control.Arrow.Constrained |
| alg2to1 | Control.Arrow.Constrained |
| alg2to2 | Control.Arrow.Constrained |
| all | Control.Category.Hask, Control.Category.Constrained.Prelude |
| Alternative | Control.Category.Hask |
| and | Control.Category.Hask, Control.Category.Constrained.Prelude |
| any | Control.Category.Hask, Control.Category.Constrained.Prelude |
| ap | Control.Category.Hask |
| appendFile | Control.Category.Hask, Control.Category.Constrained.Prelude |
| Applicative | |
| 1 (Type/Class) | Control.Category.Hask |
| 2 (Type/Class) | Control.Applicative.Constrained, Control.Monad.Constrained, Control.Category.Constrained.Prelude |
| apply | Control.Category.Constrained, Control.Category.Constrained.Prelude |
| arr | Control.Arrow.Constrained |
| Arrow | Control.Arrow.Constrained |
| ArrowChoice | Control.Arrow.Constrained |
| asin | Control.Category.Hask, Control.Category.Constrained.Prelude |
| asinh | Control.Category.Hask, Control.Category.Constrained.Prelude |
| asTypeOf | Control.Category.Hask, Control.Category.Constrained.Prelude |
| asum | Control.Category.Hask |
| atan | Control.Category.Hask, Control.Category.Constrained.Prelude |
| atan2 | Control.Category.Hask, Control.Category.Constrained.Prelude |
| atanh | Control.Category.Hask, Control.Category.Constrained.Prelude |
| AttachUnit | Control.Category.Constrained.Reified.PolyPattern |
| attachUnit | Control.Category.Constrained, Control.Category.Constrained.Prelude |
| attachZero | Control.Category.Constrained, Control.Category.Constrained.Prelude |