Martin, A. P., Gardiner, P. H. B. and Woodcock, J. C. P.
A Tactic Calculus - Full version.
Formal Aspects of Computing, 8(E), .
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We present a very general language for expressing tactic programs. The paper describes some essential tactic combinators (tacticals), and gives them a formal semantics. Those definitions are used to produce a complete calculus for reasoning about tactics written in this language. The language is extended to cover structural combinators which enable the tactics to be precisely targeted upon particular sub-expressions.
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