Data Concepts

   The information processed by actions consists of items of data, organized in structures that give access to the individual items. Data can include various familiar mathematical entities, such as truth-values, numbers, characters, strings, lists, sets, and maps. It can also include entities such as tokens, cells, and agents, used for accessing other items, and some compound entities with data components, such as messages and contracts.

   Actions themselves are not data, but they can be incorporated in so-called abstractions, which are data, and subsequently enacted back into actions. (Abstraction and enaction are a special case of so-called reification and reflection.) New kinds of data can be introduced ad hoc, for representing special pieces of information.



    Action Notation 1 Summary| Actions Concepts| Yielders Concepts