New archaeological evidences of the so-called "Bactrian-Margiana Archaeological Complex" (= BMAC) has invited a change in our knowledge of the cultural relations between Oxus civilization and south-eastern Iran during the III-II millennium B.C. transition period. The new archaeological projects in southern and western Turkmenistan, as well as attested at Gonur Depe, have showed a wider and more...

Powerset structures of extensional fuzzy sets in sets with similarity relations are investigated. It is proved that extensional fuzzy sets have powerset structures which are powerset theories in the category of sets with similarity relations, and some of these powerset theories are defined also by algebraic theories (monads). Between Zadeh's fuzzy powerset theory and the classical powerset theo...