@techreport{HoareMueller2017,
  author    = {Tony Hoare and Martin E. M{\"u}ller},
  title     = {Tracelets and Specifications},
  year      = {2017},
  abstract  = {In the accompanying paper [1] the authors study a model of concurrent programs in terms of events and a dependence relation, i.e., a set of arrows, between them. There also two simplifying interface models are presented; they abstract in different ways from the intricate network of internal points and arrows of program components. This report supplements [1] by presenting full proofs for the properties of the interface models, in particular, that both models exhibit homomorphic behaviour w.r.t. sequential and concurrent composition. [1] B. M{\"o}ller, C.A.R. Hoare, M.E. M{\"u}ller, G. Struth: A discrete geometric model of concurrent program execution. In H. Zhu, J. Bowen: Proc. UTP 16. LNCS 10134. Springer 2017, 1-25},
  language  = {en}
}