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A Robust Class of Data Languages and an Application to Learning

Benedikt Bollig ; Peter Habermehl ; Martin Leucker ; Benjamin Monmege.

We introduce session automata, an automata model to process data words, i.e., words over an infinite alphabet. Session automata support the notion of fresh data values, which are well suited for modeling protocols in which sessions using fresh values are of major interest, like in security protocols&nbsp;[&hellip;]

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On Presburger arithmetic extended with non-unary counting quantifiers

Peter Habermehl ; Dietrich Kuske.

We consider a first-order logic for the integers with addition. This logic extends classical first-order logic by modulo-counting, threshold-counting and exact-counting quantifiers, all applied to tuples of variables (here, residues are given as terms while moduli and thresholds are given&nbsp;[&hellip;]

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