@article {2023,
	title = {How to Kill Epsilons with a Dagger - A Coalgebraic Take on Systems with Algebraic Label Structure},
	year = {2014},
	month = {June},
	institution = {HASLab/INESC TEC \& University of Minho},
	address = {Braga, Portugal},
	abstract = {<p>We propose an abstract framework for modeling state-based systems with internal behavior as e.g. given by silent or ϵ-transitions. Our approach employs monads with a parametrized fixpoint operator {\textdagger} to give a semantics to those systems and implement a sound procedure of abstraction of the internal transitions, whose labels are seen as the unit of a free monoid. More broadly, our approach extends the standard coalgebraic framework for state-based systems by taking into account the algebraic structure of the labels of their transitions. This allows to consider a wide range of other examples, including Mazurkiewicz traces for concurrent systems.</p>
},
	issn = {CoRR abs/ 1402.4062},
	author = {Alexandra Silva and Filippo Bonchi and Stefan Milius and Fabio Zanasi}
}