34 citations · 77 across the 12 of their papers we have counts for
3 papers · 1 filter
Posets with Interfaces as a Model for Concurrency
Uli Fahrenberg, Christian Johansen, Georg Struth +1
We introduce posets with interfaces (iposets) and generalise their standard serial composition to a new gluing composition. In the partial order semantics of concurrency, interface…
lr-Multisemigroups and Modal Convolution Algebras
Uli Fahrenberg, Christian Johnsen, Georg Struth +1
We show how modal quantales arise as convolution algebras of functions from lr-multisemigroups that is, multisemigroups with a source map l and a target map r, into modal quantales…
Languages of Higher-Dimensional Automata
Uli Fahrenberg, Christian Johansen, Georg Struth +1
We introduce languages of higher-dimensional automata (HDAs) and develop some of their properties. To this end, we define a new category of precubical sets, uniquely naturally isom…