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    25 October 2016, Volume 36 Issue 5 Previous Issue    Next Issue
    Articles
    WELL-POSEDNESS OF A NONLINEAR MODEL OF PROLIFERATING CELL POPULATIONS WITH INHERITED CYCLE LENGTH
    Abdul-Majeed AL-IZERI, Khalid LATRACH
    Acta mathematica scientia,Series B. 2016, 36 (5):  1225-1244.  DOI: 10.1016/S0252-9602(16)30066-2

    This paper deals with a nonlinear initial boundary values problem derived from a modified version of the so called Lebowitz and Rubinow's model[16] discussed in[8, 9] modeling a proliferating age structured cell population with inherited properties. We give existence and uniqueness results on appropriate weighted Lp-spaces with 1≤p<∞ in the case where the rate of cells mortality σ and the transition rate k are depending on the total density of population. General local and nonlocal reproduction rules are considered.

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    THE WEINSTEIN CONJECTURE IN PRODUCT OF SYMPLECTIC MANIFOLDS
    Yanqiao DING, Jianxun HU
    Acta mathematica scientia,Series B. 2016, 36 (5):  1245-1261.  DOI: 10.1016/S0252-9602(16)30067-4

    In this paper, using pseudo-holomorphic curve method, one proves the Weinstein conjecture in the product P1×P2 of two strongly geometrically bounded symplectic manifolds under some conditions with P1. In particular, if N is a closed manifold or a noncompact manifold of finite topological type, our result implies that the Weinstein conjecture in CP2×T*N holds.

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    EXISTENCE AND UNIQUENESS OF ENTROPY SOLUTION TO PRESSURELESS EULER SYSTEM WITH A FLOCKING DISSIPATION
    Chunyin JIN
    Acta mathematica scientia,Series B. 2016, 36 (5):  1262-1284.  DOI: S0252-9602(16)30068-6

    We study the existence and uniqueness problem for the nonhomogeneous pressureless Euler system with the initial density being a Radon measure. Our uniqueness result is obtained in the same space as the existence theorem. Besides, by counterexample we prove that Huang-Wang's energy condition is also necessary for our nonhomogeneous system.

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    SOLVABILITY OF A PARABOLIC-HYPERBOLIC TYPE CHEMOTAXIS SYSTEM IN 1-DIMENSIONAL DOMAIN
    Hua CHEN, Wenbin LÜ, Shaohua WU
    Acta mathematica scientia,Series B. 2016, 36 (5):  1285-1304.  DOI: S0252-9602(16)30069-8

    In this paper, we use contraction mapping principle, operator-theoretic approach and some uniform estimates to establish local solvability of the parabolic-hyperbolic type chemotaxis system with fixed boundary in 1-dimensional domain. In addition, local solvability of the free boundary problem is considered by straightening the free boundary.

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    EXISTENCE AND NONEXISTENCE OF SOLUTIONS FOR A HARMONIC EQUATION WITH CRITICAL NONLINEARITY
    Kamal OULD BOUH
    Acta mathematica scientia,Series B. 2016, 36 (5):  1305-1316.  DOI: 10.1016/S0252-9602(16)30070-4

    This paper is concerned with the harmonic equation (P?ε):△u=0, u>0 in Bn and (∂u)/(∂ν)+(n-2)/(2)u=(n-2)/(2)Ku(n)/(n-2)?ε on Sn-1 where Bn is the unit ball in Rn, n≥4 with Euclidean metric g0, Bn=Sn-1 is its boundary, K is a function on Sn-1 and ε is a small positive parameter. We construct solutions of the subcritical equation (P-ε) which blow up at one critical point of K. We give also a sufficient condition on the function K to ensure the nonexistence of solutions for (P-ε) which blow up at one point. Finally, we prove a nonexistence result of single peaked solutions for the supercritical equation (P+ε).

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    FRACTIONAL INTEGRAL INEQUALITIES AND THEIR APPLICATIONS TO FRACTIONAL DIFFERENTIAL EQUATIONS
    Yaghoub JALILIAN
    Acta mathematica scientia,Series B. 2016, 36 (5):  1317-1330.  DOI: 10.1016/S0252-9602(16)30071-6

    In this paper, first we obtain some new fractional integral inequalities. Then using these inequalities and fixed point theorems, we prove the existence of solutions for two different classes of functional fractional differential equations.

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    LIMITING DIRECTION AND BAKER WANDERING DOMAIN OF ENTIRE SOLUTIONS OF DIFFERENTIAL EQUATIONS
    Jun WANG, Zongxuan CHEN
    Acta mathematica scientia,Series B. 2016, 36 (5):  1331-1342.  DOI: 10.1016/S0252-9602(16)30072-8

    In this paper, we mainly investigate entire solutions of complex differential equations with coefficients involving exponential functions, and obtain the dynamical properties of the solutions, their derivatives and primitives. With some conditions on coefficients, for the solutions, their derivatives and their primitives, we consider the common limiting directions of Julia set and the existence of Baker wandering domain.

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    LEVEL SETS AND EQUIVALENCES OF MORAN-TYPE SETS
    Yali DU, Junjie MIAO, Min WU
    Acta mathematica scientia,Series B. 2016, 36 (5):  1343-1357.  DOI: 10.1016/S0252-9602(16)30073-X

    In the paper, we consider Moran-type sets Ea given by sequences {akand {nk. we prove that Ea may be decompose into the disjoint union of level sets. Moreover, we define three type of equivalence between two dimension functions associated to two Morantype sets, respectively, and we classify Moran-type sets by these equivalent relations.

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    THE HOLOMORPHIC AUTOMORPHISM GROUP OF HIGHER DIMENSION THULLEN DOMAIN
    Hongjun LI, Chunhui QIU
    Acta mathematica scientia,Series B. 2016, 36 (5):  1358-1368.  DOI: 10.1016/S0252-9602(16)30074-1

    In this paper, we give the holomorphic automorphism group of the higherdimensional generalization of Thullen domain.

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    TIME DECAY RATE OF SOLUTIONS TO THE HYPERBOLIC MHD EQUATIONS IN R3
    Bei LI, Hongjin ZHU, Caidi ZHAO
    Acta mathematica scientia,Series B. 2016, 36 (5):  1369-1382.  DOI: 10.1016/S0252-9602(16)30075-3

    In this paper, we first show the global existence, uniqueness and regularity of weak solutions for the hyperbolic magnetohydrodynamics (MHD) equations in R3. Then we establish that the solutions with initial data belonging to Hm(R3)∩L1(R3) have the following time decay rate:‖▽mu(x, t)‖2+‖▽mb(x, t)‖2+‖▽m+1u(x, t)‖2+‖▽m+1b(x, t)‖2c(1+t)-3/2-m for large t, where m=0, 1.

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    STRONGLY NONLINEAR VARIATIONAL PARABOLIC EQUATIONS WITH p(x)-GROWTH
    Elhoussine AZROUL, Badr LAHMI, Ahmed YOUSSFI
    Acta mathematica scientia,Series B. 2016, 36 (5):  1383-1404.  DOI: 10.1016/S0252-9602(16)30076-5

    We study the Dirichlet problem associated to strongly nonlinear parabolic equations involving p(x) structure in W01,xLp(x)(Q). We prove the existence of weak solutions by applying Galerkin's approximation method.

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    UNIFORM FORMULA FOR THE RIEMANN SOLUTIONS OF A SCALAR COMBUSTION MODEL
    Chunlong YANG, Gaowei CAO, Xiaozhou YANG
    Acta mathematica scientia,Series B. 2016, 36 (5):  1405-1418.  DOI: 10.1016/S0252-9602(16)30077-7

    In this paper, we construct a uniform formula for the Riemann solutions of the simplified Chapman-Jouguet model. Firstly, we define a new functional, and then, we obtain that the Riemann solutions can be expressed by the maximum value point of this functional, while Riemann solutions may contain some of strong detonation waves, Chapman-Jouguet detonation waves and contact discontinuities. Finally, Chapman-Jouguet deflagration waves are also discussed.

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    GLOBAL CLASSICAL SOLUTION TO THE CAUCHY PROBLEM OF THE 3-D COMPRESSIBLE NAVIER-STOKES EQUATIONS WITH DENSITY-DEPENDENT VISCOSITY
    Yulin YE
    Acta mathematica scientia,Series B. 2016, 36 (5):  1419-1432.  DOI: 10.1016/S0252-9602(16)30078-9

    In this paper, we consider the global existence of classical solution to the 3-D compressible Navier-Stokes equations with a density-dependent viscosity coefficient λ(ρ) provided that the initial energy is small in some sense. In our result, we give a relation between the initial energy and the viscosity coefficient μ, and it shows that the initial energy can be large if the coefficient of the viscosity μ is taken to be large, which implies that large viscosity μ means large solution.

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    STRONG CONVERGENCE THEOREMS FOR EQUILIBRIUM PROBLEM AND BREGMAN TOTALLY QUASI-ASYMPTOTICALLY NONEXPANSIVE MAPPING IN BANACH SPACES
    Sheng ZHU, Jianhua HUANG
    Acta mathematica scientia,Series B. 2016, 36 (5):  1433-1444.  DOI: 10.1016/S0252-9602(16)30079-0

    In this paper, we propose a new hybrid iterative scheme for finding a common solution of an equilibrium problem and fixed point of Bregman totally quasi-asymptotically nonexpansive mapping in reflexive Banach spaces. Moreover, we prove some strong convergence theorems under suitable control conditions. Finally, the application to zero point problem of maximal monotone operators is given by the result.

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    GENERALIZED WARDOWSKI TYPE FIXED POINT THEOREMS VIA α-ADMISSIBLE FG-CONTRACTIONS IN b-METRIC SPACES
    Vahid PARVANEH, Nawab HUSSAIN, Zoran KADELBURG
    Acta mathematica scientia,Series B. 2016, 36 (5):  1445-1456.  DOI: 10.1016/S0252-9602(16)30080-7

    Recently, Wardowski [Fixed Point Theory Appl., 2012:94, 2012] introduced and studied a new contraction called F-contraction to prove a fixed point result as a generalization of the Banach contraction principle. In this paper, we introduce an α-β-FG-contraction and generalize the Wardowski fixed point result in b-metric and ordered b-metric spaces. As an application of our results we deduce Suzuki type fixed point results for β-FG-contractions. Moreover, we discuss some illustrative examples to highlight the realized improvements.

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    ASYMPTOTIC SOLUTION OF SINGULARLY PERTURBED HYBRID DYNAMICAL SYSTEMS
    Limeng WU, Juan ZHANG, Mingkang NI, Haibo LU
    Acta mathematica scientia,Series B. 2016, 36 (5):  1457-1466.  DOI: 10.1016/S0252-9602(16)30081-9

    In this paper, we consider a class of optimal control problem for the singularly perturbed hybrid dynamical systems. By means of variational method, we obtain the necessary conditions of the hybrid dynamical systems. Meanwhile, the existence of solution for the hybrid dynamical system is proved by the sewing method and the uniformly valid asymptotic expansion of the optimal trajectory is constructed by the boundary function method. Finally, an example is presented to illustrate the result.

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    WANDERING SUBSPACES OF THE HARDY-SOBOLEV SPACES OVER Dn
    Jiesheng XIAO, Guangfu CAO
    Acta mathematica scientia,Series B. 2016, 36 (5):  1467-1473.  DOI: 10.1016/S0252-9602(16)30082-0

    In this paper, we show that for (log(2)/(3))/(2 log 2)≤β≤(1)/(2), suppose S is an invariant subspace of the Hardy-Sobolev spaces Hβ2(Dn) for the n-tuple of multiplication operators (Mz1,…, Mzn). If (Mz1|S,…, Mzn|S) is doubly commuting, then for any non-empty subset α={α1,…, αk} of {1,…,n}, WαS is a generating wandering subspace for Wα|S=(Mzα1|S,…, Mzαk|S), that is,[WαS]Wα|S=S, where WαS(S?zαiS).

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    VISCOSITY APPROXIMATION METHODS FOR THE SPLIT EQUALITY COMMON FIXED POINT PROBLEM OF QUASI-NONEXPANSIVE OPERATORS
    Jing ZHAO, Shengnan WANG
    Acta mathematica scientia,Series B. 2016, 36 (5):  1474-1486.  DOI: 10.1016/S0252-9602(16)30083-2
    Abstract ( 111 )   RICH HTML PDF   Save

    Let H1, H2, H3 be real Hilbert spaces, let A:H1H3, B:H2H3 be two bounded linear operators. The split equality common fixed point problem (SECFP) in the infinite-dimensional Hilbert spaces introduced by Moudafi (Alternating CQ-algorithm for convex feasibility and split fixed-point problems. Journal of Nonlinear and Convex Analysis) is to find xF(U), yF(T) such that Ax=By, (1) where U:H1H1 and T:H2H2 are two nonlinear operators with nonempty fixed point sets F(U)={xH1:Ux=x} and F(T)={xH2:Tx=x}. Note that, by taking B=I and H2=H3 in (1), we recover the split fixed point problem originally introduced in Censor and Segal. Recently, Moudafi introduced alternating CQ-algorithms and simultaneous iterative algorithms with weak convergence for the SECFP (1) of firmly quasi-nonexpansive operators. In this paper, we introduce two viscosity iterative algorithms for the SECFP (1) governed by the general class of quasi-nonexpansive operators. We prove the strong convergence of algorithms. Our results improve and extend previously discussed related problems and algorithms.

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    RIESZ IDEMPOTENT OF (n,k)-QUASI-*-PARANORMAL OPERATORS
    Qingping ZENG, Huaijie ZHONG
    Acta mathematica scientia,Series B. 2016, 36 (5):  1487-1491.  DOI: 10.1016/S0252-9602(16)30084-4
    Abstract ( 106 )   RICH HTML PDF   Save

    A bounded linear operator T on a complex Hilbert space H is called (n, k)-quasi-*-paranormal if ‖T1+n(Tkx)‖1/(1+n)Tkx1/(1+n)≥‖T*(Tkx)‖ for all xH, where n, k are nonnegative integers. This class of operators has many interesting properties and contains the classes of n-*-paranormal operators and quasi-*-paranormal operators. The aim of this note is to show that every Riesz idempotent Eλ with respect to a non-zero isolated spectral point λ of an (n)-quasi-*-paranormal operator T is self-adjoint and satisfies ranEλ=ker(T-λ)=ker(T-λ)*.

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    PIECEWISE CONTINUOUS SOLUTIONS OF INITIAL VALUE PROBLEMS OF SINGULAR FRACTIONAL DIFFERENTIAL EQUATIONS WITH IMPULSE EFFECTS
    Yuji LIU
    Acta mathematica scientia,Series B. 2016, 36 (5):  1492-1508.  DOI: 10.1016/S0252-9602(16)30085-6

    Results on the existence of piecewise continuous solutions for two classes of initial value problems of impulsive singular fractional differential equations are obtained.

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    EXISTENCE OF SOLUTION AND APPROXIMATE CONTROLLABILITY OF A SECOND-ORDER NEUTRAL STOCHASTIC DIFFERENTIAL EQUATION WITH STATE DEPENDENT DELAY
    Sanjukta DAS, Dwijendra PANDEY, N. SUKAVANAM
    Acta mathematica scientia,Series B. 2016, 36 (5):  1509-1523.  DOI: 10.1016/S0252-9602(16)30086-8
    Abstract ( 147 )   RICH HTML PDF   Save

    This paper has two sections which deals with a second order stochastic neutral partial differential equation with state dependent delay. In the first section the existence and uniqueness of mild solution is obtained by use of measure of non-compactness. In the second section the conditions for approximate controllability are investigated for the distributed second order neutral stochastic differential system with respect to the approximate controllability of the corresponding linear system in a Hilbert space. Our method is an extension of co-author N. Sukavanam's novel approach in[22]. Thereby, we remove the need to assume the invertibility of a controllability operator used by authors in[5], which fails to exist in infinite dimensional spaces if the associated semigroup is compact. Our approach also removes the need to check the invertibility of the controllability Gramian operator and associated limit condition used by the authors in[20], which are practically difficult to verify and apply. An example is provided to illustrate the presented theory.

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    COEXISTENCE FOR MULTIPLE LARGEST REPRODUCTION RATIOS OF A MULTI-STRAIN SIS EPIDEMIC MODEL
    Yoshiaki MUROYA, Eleonora MESSINA, Elvira RUSSO, Antonia VECCHIO
    Acta mathematica scientia,Series B. 2016, 36 (5):  1524-1530.  DOI: 10.1016/S0252-9602(16)30087-X

    In this paper, to complete the global dynamics of a multi-strains SIS epidemic model, we establish a precise result on coexistence for the cases of the partial and complete duplicated multiple largest reproduction ratios for this model.

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    A SPECIAL MODULUS OF CONTINUITY AND THE K-FUNCTIONAL
    Nadezhda DOLMATOVA
    Acta mathematica scientia,Series B. 2016, 36 (5):  1531-1540.  DOI: 10.1016/S0252-9602(16)30088-1

    We consider the questions connected with the approximation of a real continuous 1-periodic functions and give a new proof of the equivalence of the special Boman-Shapiro modulus of continuity with Peetre's K-functional. We also prove Jackson's inequality for the approximation by trigonometric polynomials.

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