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**An imperative language based on distributive categories.**
*(English)*
Zbl 0788.18008

The purpose of the paper is to show that the appropriate categories for the analysis of imperative programming languages are distributive categories, namely categories with sums and products and a distributive law of products over sums. In this approach, imperative programming is the construction of dynamical systems from a given set of built-in data types and functions using the operations available in a distributive category. The behaviours of a program are the behaviours of the dynamical system. Programming languages are a family parameterized by the particular built-in functions of each language.

Reviewer: A.Maggiolo-Schettini (Pisa)

### MSC:

18D99 | Categorical structures |

68Q55 | Semantics in the theory of computing |

18C10 | Theories (e.g., algebraic theories), structure, and semantics |

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\textit{R. F. C. Walters}, Math. Struct. Comput. Sci. 2, No. 3, 249--256 (1992; Zbl 0788.18008)

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### References:

[1] | Walters, Bull. Austral. Math. Soc. 40 pp 70– (1989) |

[2] | Arbib, Distibutie logic (1986) |

[3] | Lawvere, J. of Symbolic Logic 32 pp 562– (1967) |

[4] | Mac Lane, Categories for the working mathematician 5 (1971) |

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