A Decision Procedure for Set-Theoretic Formulae Involving Rank and Cardinality Comparison

Excerpt from A Decision Procedure for Set-Theoretic Formulae Involving Rank and Cardinality Comparison

The decidability of the extension of mls with the singleton operator, the cardinality operator together with arithmetic addition, subtraction and comparison was proved in [fosso]. Also, the decidability of mls extended with the singleton operator and the rank comparison predicate was established in [ccf88]. This paper extends and unifies both such results.

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