The notion of a probabilistic metric  space  corresponds to thesituations when we do not know exactly the  distance.  Probabilistic Metric space was  introduced by Karl Menger. Alsina, Schweizer and Sklar gave a general definition of  probabilistic normed space based on the definition of Menger [1]. In this note we study the PN spaces which are  topological vector spaces and the open mapping an...

Let ? be an open connected subset of the complex plane C and let T be a bounded linear operator on a Hilbert space H. For ? in ? let e the orthogonal projection onto the null-space of T-?I . We discuss the necessary and sufficient conditions for the map ?? to b e continuous on ?. A generalized Gram- Schmidt process is also given.

proper scheduling of tasks leads to optimum using of time and resources, inorder to obtaining best result. one of the most important and complicatedscheduling problems is open shop scheduling problem. there are n jobs in openshop scheduling problem which should be processed by m machines. purpose ofscheduling open shop problem is attaining to a suitable order of processing jobs byspecified mach...

design of the new apartment buildings in iran, has been faced to a decline of quality of local life and an improper interaction between inside-outside of residential spaces. this interaction can be affected by the quality of in-between spaces in different scales of apartment buildings in residential developments. in-between spaces of apartment houses refer to a hierarchy of the main entrance, o...

This paper intends to highlight one of the key concerns of housing designers i.e. the influence of open space on human satisfaction as well as their attachment to a particular place. Consequently, neighborhood open spaces with their meaningful layout seem to be constituent elements of residential complexes. Although, architects and designers try to create qualitative areas among buildings, the ...