2026-10-14T05:57:04+03:30 http://ijmsi.ir/browse.php?mag_id=2&slc_lang=en&sid=1

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Iranian Journal of Mathematical Sciences and Informatics IJMSI 1735-4463 2008-9473 10.66224/ijmsi 2006 1 2 M. AMINI A. R. MEDGHALCHI For a unital foundation topological *-semigroup S whose representations separate points of S, we show that the spectrum of the Fourier-Stieltjes algebra B(S) is a compact semitopological semigroup. We also calculate B(S) for several examples of S. Fourier algebra Fourier-Stieltjes algebra amenability weakly and strongly almost periodic functions spectrum foundation topological *-semigroups. 2006 11 01 1 8 http://ijmsi.ir/article-1-34-en.pdf 10.7508/ijmsi.2006.02.001

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Iranian Journal of Mathematical Sciences and Informatics IJMSI 1735-4463 2008-9473 10.66224/ijmsi 2006 1 2 H. ASSA M. HESAARAKI A. MOAMENI In this paper we consider a kind of higher-order evolution equation as^{kt^{k} + ^{k;minus1}u/t^{k;minus1} +• • •+ut ;minus{delta}u= f (u, {delta}u,x). For this equation, we investigate nonglobal solution, blow-up in finite time and instantaneous blow-up under some assumption on k, f and initial data. In this paper we employ the Test function method, the eneralized convexity method and Galerkin’s method for some of our proofs. Moreover, occasionally by changing P.D.E problems to some ordinary differential inequalities, we investigate this kind of higher-order evolution equations. Higher-order evolution equations blow-up nonglobal solution instanta instantaneous blow-up. 2006 11 01 9 30 http://ijmsi.ir/article-1-35-en.pdf 10.7508/ijmsi.2006.02.002

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Iranian Journal of Mathematical Sciences and Informatics IJMSI 1735-4463 2008-9473 10.66224/ijmsi 2006 1 2 SUNGPU HONG MUKUT TRIPATHI Involving the Ricci curvature and the squared mean curvature, we obtain basic inequalities for different kind of submaniforlds of a Sasakian space form tangent to the structure vector field of the ambient manifold. Contrary to already known results, we find a different necessary and sufficient condition for the equality for Ricci curvature of C-totally real submanifolds of a Sasakian space form, and (2) of the fact that if a C-totally real submanifold of maximum dimension satisfies the equality case, then it must be must be minimal. Two basic inequalities for submanifolds of any Riemannian manofild, one involving scaler curvature and the squared mean curvature and the other involving the invariant and the squared mean curvature are also obtained. These results are applied to get corresponding results for submanifolds of Sasakian space forms. Einstein manifold Saskian space form Invarient submanifold Semi-invarient submanifold Almost semi-invariant submanifold CR-submanifold Slant submanifold C-totally real submanifold Ricci curvature K-Ricci curvature Scalar curvature. 2006 11 01 31 51 http://ijmsi.ir/article-1-36-en.pdf 10.7508/ijmsi.2006.02.003

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Iranian Journal of Mathematical Sciences and Informatics IJMSI 1735-4463 2008-9473 10.66224/ijmsi 2006 1 2 EBRAHIM SALEHI For any h in N , a graph G = (V, E) is said to be h-magic if there exists a labeling l: E(G) to Z_{h}-{0} such that the induced vertex set labeling l^{+: V(G) to Z_{h}} defined by l^{+}(v)= Summation of l(uv)such that e=uvin in E(G) is a constant map. For a given graph G, the set of all for which G is h-magic is called the integer-magic spectrum of G and is denoted by IM(G). In this paper, the integer-magic spectra of certain classes of cycle related graphs will be determined. magic non-magic integer-magic spectrum. 2006 11 01 53 63 http://ijmsi.ir/article-1-37-en.pdf 10.7508/ijmsi.2006.02.004

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Iranian Journal of Mathematical Sciences and Informatics IJMSI 1735-4463 2008-9473 10.66224/ijmsi 2006 1 2 H YOUSEFI-AZARI A GOODARZI A tree T of order n is called k-placement if there are k edge-disjoint copies of T into K_{n}. In this paper we prove some results about 4-placement of rooted trees. Embedding Packing K-placement Star-path. 2006 11 01 65 77 http://ijmsi.ir/article-1-38-en.pdf 10.7508/ijmsi.2006.02.005

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Iranian Journal of Mathematical Sciences and Informatics IJMSI 1735-4463 2008-9473 10.66224/ijmsi 2006 1 2 G. R. MOHTASHAMI BORZADARAN In this paper, we consider characterizations based on the Bhattacharyya matrices. We characterize, under certain constraint, dis tributions such as normal, compound poisson and gamma via the diago nality of the 2 X 2 Bhattacharyya matrix. Exponential Families Bhattacharyya Bounds Rao-Cramer In‌equality Fisher Information Diagonality of the Bhattacharyya matrices. 2006 11 01 79 84 http://ijmsi.ir/article-1-39-en.pdf 10.7508/ijmsi.2006.02.006