Helmut Seidl. **A Modal µ-Calculus for Durational Transition Systems**. , volume 95-08 of *Forschungsbericht*, 1995. Universität Trier, Mathematik/Informatik.

Durational transition systems are finite transition systems where every transition is additionally equipped with a duration. We consider the problem of interpreting ¯--formulas over durational transition systems. In case the formula contains only operations minimum, maximum, addition, and sequencing, we show that the interpretation ist not only computable but (up to a linear factor) as efficiently computable as the interpretation of ordinary ¯--formulas over finite transition systems.

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