Cafeobj manual

as primers. The logical aspects of CafeOBJ are explained in detail in [2] and [3]. This manual is for the initiated, and we sometimes abandon the theoretical rigour for the sake of intuitiveness. For a very brief introduction, we just highlight a couple of features of CafeOBJ. CafeOBJ is an o spring of the family of algebraic speci cation techniques. This manual introduces the language CafeOBJ. Is is a reference manual with the aim to documentthecurrentstatusofthelanguage,andnottargetingatanexhaustivepresen-tationofthemathematicalandlogicalbackground. Still,thenextsectionwillgiveashort summaryoftheunderlyingformalapproachandcarryreferencesforthoseinsearchfor details. CafeOBJ is a language for writing formal (i.e. mathematical) specifications of models for wide varieties of software and systems, and verifying properties of them. CafeOBJ implements equational logic by rewriting and can be used as a powerful interactive theorem proving system.

This manual introduces the language CafeOBJ. Is is a reference manual with the aim to document the current status of the language, and not targeting at an exhaustive presentation of the mathematical and logical background. In CafeOBJ, places of arguments of operators can be designated by underbars. Operators including underbars are called mix-fix operators. For example, _+_ is an infix operator. CafeOBJ is a language for writing formal (i.e. mathematical) specifications of models for wide varieties of software and systems, and verifying properties of them. CafeOBJ implements equational logic by rewriting and can be used as a powerful interactive theorem proving system.

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