Can we believe that there are non-existent entities without commitment to Meinongian metaphysics? This paper argues we can. Let’s say we propose that, as appearances suggest, names like Pegasus refer to non-existent things. They are not, in other words, empty names, names without referents. Rather, they are terms that refer, and so have referents, but the referents do not exist. Moreover, at le...

abstract comparative advantage is one of the important economic criterions in production, import and export programming. in this survey, existence and nonexistence of the most important vegetables(potato, cucumber and tomato) comparative advantage in jiroft aria in the year 1385-86 by use of two comparative advantage recognition indexes was determined. the first indexes were social cost benefit...

We solve the problem of computing the residual reliability (the RES problem) for all classes of P-threshold graphs for which efficient structural characterizations based on decomposition to indecomposable components have been established. In particular, we give a constructive proof of existence of linear algorithms for computing residual reliability of pseudodomishold, domishold, matrogenic and...