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作者:Muneo Cho , Kotaro Tanahashi
来源:[J].Journal of Mathematical and Computational Science, 2014, Vol.4 (1), pp.1-9SCIK
摘要:Let T be a ∗-n-paranormal operator on a complex Banach space X . In this paper we show that T is isoloid and if α,β are distinct eigen-values of T, then ker(T −αI)⊥ker(T −βI). Also we show that if the dual space X∗is uniformly convex and (T −αI)xk→ 0 for (xk, ...
作者:D.D.E. Houpa , T. E. Miamdjo , T.Y. Kouakep
来源:[J].Journal of Mathematical and Computational Science, 2014, Vol.4 (1), pp.10-24SCIK
摘要:In this paper, a SEI model for hepatitis B is constructed in a closed population where the susceptibility depends on the chronological age and the basic reproduction rate R0is derived. Under suitable (biological and mathematical) assumptions, it is shown that the disease free equ...
作者:Haissam Y. Chehade
来源:[J].Journal of Mathematical and Computational Science, 2014, Vol.4 (1), pp.25-34SCIK
摘要:In this paper, we examine the equations kφG(β) = q(β)±1 and kφG(β) = q(β) in the domains of Gaussian integersZ[i] and the polynomial rings over finite fieldsZp[x], where p is prime inZ. Properties concerning the existence of solutions are studied. Complete characterizat...
作者:Yong Chan Kim
来源:[J].Journal of Mathematical and Computational Science, 2014, Vol.4 (1), pp.35-49SCIK
摘要:In this paper, we investigate relations between L-upper (lower, join meet, meet join) approximation operators and Alexandrov L-topologies. We give their examples by various L-fuzzy relations.
作者:Gulnur Saffak Atalay , Fatma Guler , Emin Kasap
来源:[J].Journal of Mathematical and Computational Science, 2014, Vol.4 (1), pp.50-57SCIK
摘要:In this paper, by using non-planer space curves the translation surfaces are investigated according to Bishop frames in Euclidean 3-space. We have calculated the first and second fundamental quantities. We give the gaussian and mean curvatures of these surfaces according to the f...
作者:Ibrahim Yusuf , Bashir Yusuf , Saminu I. Bala
来源:[J].Journal of Mathematical and Computational Science, 2014, Vol.4 (1), pp.58-66SCIK
摘要:Studies on reliability characteristics of a redundant repairable warm standby system involving common cause failure are numerous. Little attention is paid on the effect of common cause failure, individual unit failure and repair rates on mean time to system failure and which...
作者:Ting Dai
来源:[J].Journal of Mathematical and Computational Science, 2014, Vol.4 (1), pp.67-72SCIK
摘要:Time series model is a sort of important stochastic system, and is a useful stochastic process in practices. In this paper, we use wavelet alternation to study one order linear stochastic system. We investigate its relative properties, stationary properties under the Haar wavelet...
作者:J. Sunday , A. O. Adesanya , M. R. Odekunle
来源:[J].Journal of Mathematical and Computational Science, 2014, Vol.4 (1), pp.73-84SCIK
摘要:This paper examines the derivation and implementation of a self-starting four-step fifth order block integrator for direct integration of stiff and oscillatory first-order ordinary differential equations using interpolation and collocation procedures. The method was developed by ...
作者:Mustafa Bilici , Evren Ergün , Mustafa Çalişkan
来源:[J].Journal of Mathematical and Computational Science, 2014, Vol.4 (1), pp.85-104SCIK
摘要:In this paper, we introduce the natural lift curves for the spherical indicatrices of the Bertrand mates of spacelike curves on the tangent bundle T(S12) or T(H02) in Minkowski 3-space and we give some new characterizations for these curves. Additionally we illustrate two example...
作者:Bijendra Singh , Pooja Bhadouria , Omprakash Sikhwal
来源:[J].Journal of Mathematical and Computational Science, 2014, Vol.4 (1), pp.105-117SCIK
摘要:Fibonacci numbers are fascinating and their impact on the field of mathematics has been great. In this paper, mainly present formulas for the sums of k-Lucas numbers with indexes in an arithmetic sequence, say an+r, for fixed integers a and r (0 \leq r \leq a-1). Also the generat...

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