Index - N
| Nat | Control.SessionTypes.Types, Control.SessionTypes |
| negate | Control.SessionTypes.Indexed |
| Normalize | Control.SessionTypes.Normalize |
| normalize | Control.SessionTypes.Normalize |
| Not | Control.SessionTypes.Types, Control.SessionTypes |
| not | Control.SessionTypes.Indexed |
| notElem | Control.SessionTypes.Indexed |
| Nothing | Control.SessionTypes.Indexed |
| null | Control.SessionTypes.Indexed |
| Num | Control.SessionTypes.Indexed |