...Languages

The research described in this paper has been partially supported by the German Research Council (DFG) under grant Ha 2457/1-1.

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...form

See [12] for a definition of the one step relation .

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...definition.

Note that the use of  $$case -expressions does not restrict the class of Curry programs we can handle.

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...theorem

The reduction semantics of Curry can be found in [12] and (concerning case-expressions) in [9].

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