caspian region is on the receiver of caspian sea with five coastal states including of iran, russia, azerbaijan, turkmenistan and kazakhstan - in the surrounding sea, due to having common points in the features of natural geography, special location, political and cultural and historical background, is known as a geopolitical region. following the collapse of the soviet ::::union::::, due to ch...

Abstract We show that if a densely defined closable operator A is such the resolvent set of 2 nonempty, then necessarily closed. This result extended to case polynomial . also generalize recent by Sebestyén–Tarcsay concerning converse J. von Neumann. Other interesting consequences are given. One them proof T quasinormal (unbounded) normal for some , normal. Hence closed subnormal itself hyponor...

accounts and narratives of the ancient iranian texts and sources of the islamic period concerning fereydun indicate that this iranian dragon-slayer hero has been known for his three powers, that is “fighting powers,” “medical skills,” and “sorcery arts”. on the other hand, his name, fereydun (middle persian “frēdōn”, avestan “θraētaona-“), seems to mean “the owner of three powers” or “the one w...

like other countries, there are various conditions for election candidates in islamic republic of iran. since the president enjoys a very significant role in iran’s political system, having extensive powers, the presidential qualifications have been did down in the country’s constitution. principle (115) provides:” the president must be elected from among religious and political personalities p...

There is now good evidence that in the Vertebrata peripheral nerves exert an important trophic effect on the regeneration of the structures which they innervate (Millot, 1931; Needham, J. 1942; Hamburger, 1944). In invertebrates the nervous system is not always necessary; Millot (1931, p. 117) concluded that in types where regenerative powers are comparatively limited (e.g. Mollusca, some Nemer...

Abstract Zarrabi proved in 1993 that if the spectrum of a contraction T on Banach space is countable subset unit circle

The radio k-chromatic number $$rc_k(G)$$ of a graph G is the minimum integer $$\lambda $$ such that there exists function $$\phi : V(G) \rightarrow \{0,1,\cdots , \lambda \}$$ satisfying $$|\phi (u)-\phi (v)| \ge k+1 - d(u,v)$$ where d(u, v) denotes distance between u and v. To date, several upper lower bounds $$rc_k(\cdot )$$ established for different families. One most notable works in this d...

It is shown that there are no non-trivial fifth-, seventh-, eleventh-, thirteenthor seventeenth powers in the Fibonacci sequence. For eleventh, thirteenthand seventeenth powers an alternative (to the usual exhaustive check of products of powers of fundamental units) method is used to overcome the problem of having a large number of independent units and relatively high bounds on their exponents...