The study of transportability aims to identify conditions under which causal information learned from experiments can be reused in a different environment where only passive obser...
ata forms, and abstract structural hierarchy based on is-a relationship and has-a relationship. Object structures illustrate many kinds of objects and actual dependence among objec...
We extend the classes of standard discrete- and continuous-time input/state/ output matrix systems by adding reverse internal and/or external channels. The reverse internal channe...
We recall the notions of weak and strong Euler characteristics on a first order structure and make explicit the notion of a Grothendieck ring of a structure. We define partially or...
Web sites are often organized into several regions, each dedicated to a specific topic or serving a particular function. From a user’s perspective, these regions typically form ...