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Reasoning about Data Repetitions with Counter Systems

Stephane Demri ; Diego Figueira ; M Praveen.

We study linear-time temporal logics interpreted over data words with multiple attributes. We restrict the atomic formulas to equalities of attribute values in successive positions and to repetitions of attribute values in the future or past. We demonstrate correspondences between satisfiability&nbsp;[&hellip;]

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Alternating register automata on finite words and trees

Diego Figueira.

We study alternating register automata on data words and data trees in relation to logics. A data word (resp. data tree) is a word (resp. tree) whose every position carries a label from a finite alphabet and a data value from an infinite domain. We investigate one-way automata with alternating&nbsp;[&hellip;]

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