%0 Book Section %A Gadducci, Fabio %A Lluch-Lafuente, Alberto %A Vandin, Andrea %B Graph Transformations (ICGT 2010) %D 2010 %E Ehrig, Hartmut %E Rensink, Arend %E Rozenberg, Grzegorz %E Schürr, Andy %F eprints:143 %I Springer %K Quantified μ-calculi, counterpart semantics, graph transformation. %P 282-297 %S Lecture Notes in Computer Science %T Counterpart semantics for a second-order mu-calculus %U http://eprints.imtlucca.it/143/ %V 6372 %X We propose a novel approach to the semantics of quantified μ-calculi, considering models where states are algebras; the evolution relation is given by a counterpart relation (a family of partial homomorphisms), allowing for the creation, deletion, and merging of components; and formulas are interpreted over sets of state assignments (families of substitutions, associating formula variables to state components). Our proposal avoids the limitations of existing approaches, usually enforcing restrictions of the evolution relation: the resulting semantics is a streamlined and intuitively appealing one, yet it is general enough to cover most of the alternative proposals we are aware of. %Z © Springer-Verlag Berlin Heidelberg 2010. The final publication is available at www.springerlink.com.