نتایج جستجو برای: countablynear ps compact set

تعداد نتایج: 762636  

Journal: :iranian journal of science and technology (sciences) 2008
b. bidabad

here, the concept of electric capacity on finsler spaces is introduced and the fundamentalconformal invariant property is proved, i.e. the capacity of a compact set on a connected non-compact finslermanifold is conformal invariant. this work enables mathematicians and theoretical physicists to become morefamiliar with the global finsler geometry and one of its new applications.

In this paper, the concept of countably near PS-compactness inL-topological spaces is introduced, where L is a completely distributive latticewith an order-reversing involution. Countably near PS-compactness is definedfor arbitrary L-subsets and some of its fundamental properties are studied.

Journal: :bulletin of the iranian mathematical society 0
m. fakhar department of mathematics‎, ‎university of isfahan‎, ‎isfahan 81745--163‎, ‎iran‎, ‎and‎, ‎school of mathematics‎, ‎institute for research in fundamental sciences (ipm)‎, ‎p.o‎. ‎box: ‎19395--5746‎, ‎tehran‎, ‎iran. m. r. koushesh department of mathematical sciences‎, ‎isfahan university of technology‎, ‎isfahan 84156--83111‎, ‎iran‎, ‎and‎, ‎school of mathematics‎, ‎institute for research in fundamental sciences (ipm)‎, ‎p.o‎. ‎box‎: ‎19395--5746‎, ‎tehran‎, ‎iran. m. raoofi department of mathematical sciences‎, ‎isfahan university of technology‎, ‎isfahan 84156--83111‎, ‎iran.

‎it is well known that every (real or complex) normed linear space $l$ is isometrically embeddable into $c(x)$ for some compact hausdorff space $x$‎. ‎here $x$ is the closed unit ball of $l^*$ (the set of all continuous scalar-valued linear mappings on $l$) endowed with the weak$^*$ topology‎, ‎which is compact by the banach--alaoglu theorem‎. ‎we prove that the compact hausdorff space $x$ can ...

Journal: :journal of sciences islamic republic of iran 0

in this paper, we investigate the concept of topological stationary for locally compact semigroups. in [4], t. mitchell proved that a semigroup s is right stationary if and only if m(s) has a left invariant mean. in this case, the set of values ?(f) where ? runs over all left invariant means on m(s) coincides with the set of constants in the weak* closed convex hull of right translates of f. th...

Journal: :journal of algorithms and computation 0
stephen j. gismondi department of mathematics & statistics, university of guelph, guelph, on, ca. n1g 2w1

a compact formulation of the set of tours neither in a graph nor its complement is presented and illustrates a general methodology proposed for constructing polyhedral models of decision problems based upon permutations, projection and lifting techniques. directed hamilton tours on n vertex graphs are interpreted as (n-1)- permutations. sets of extrema of birkhoff polyhedra are mapped to tours ...

In this paper, a Fredkin gate using photonic-crystal around the 1550 nm telecommunication wavelength is modelled. The proposed structure has a compact footprint compared with previous works of research groups. The proposed structure is based on air holes on silicon substrate. Silicon substrate and air holes have 466 nm and 177 nm radius, respectively. For analyse of the structure Finite-Differe...

In this paper, we investigate the concept of topological stationary for locally compact semigroups. In [4], T. Mitchell proved that a semigroup S is right stationary if and only if m(S) has a left Invariant mean. In this case, the set of values ?(f) where ? runs over all left invariant means on m(S) coincides with the set of constants in the weak* closed convex hull of right translates of f. Th...

2007
Bruno Courcelle Andrew Twigg

We study labelling schemes for X-constrained path problems. Given a graph (V,E) and X ⊆ V , a path is X-constrained if all intermediate vertices avoidX. We study the problem of assigning labels J(x) to vertices so that given {J(x) : x ∈ X} for any X ⊆ V , we can route on the shortest X-constrained path between x, y ∈ X. This problem is motivated by Internet routing, where the presence of routin...

‎‎Let $R$ be a commutative ring with identity and let $M$ be an $R$-module‎. ‎We define the primary spectrum of $M$‎, ‎denoted by $mathcal{PS}(M)$‎, ‎to be the set of all primary submodules $Q$ of $M$ such that $(operatorname{rad}Q:M)=sqrt{(Q:M)}$‎. ‎In this paper‎, ‎we topologize $mathcal{PS}(M)$ with a topology having the Zariski topology on the prime spectrum $operatorname{Spec}(M)$ as a sub...

2017
Mariem Mabrouki Bassem Jmai Ridha ghayoula

In this paper, a controllable reflection type Phase Shifter (PS) is designed, simulated and implemented. The structure of the 2-bits PS consists of branch line coupler, delay lines and six GaAs FET switches controlled in pair. The phase shifting is achieved by turning ON one pair of switches. The circuit design is fabricated using FR4 substrate with dielectric constant equal to 4.7. The size of...

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