In this paper, by using the fixed point index method, the authors discussed the periodic boundary value problem of first order differential systems.

摘要利用锥上的不动点指数研究了一阶非线性常微分方程组的周期边值问题。

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In this paper, by using the fixed point index method, the authors discussed the periodic boundary value problem of first order differential systems.

利用锥上的不动点指数研究了一阶非线性常微分方程组的周期边值问题。

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This paper discusses the existence of multiple positive solutions of a class of nonlinear singular boundary value problems by means of the fixed point index Theorem on cones.

利用锥映射的不动点指数定理，研究了一类非线性奇异边值问题多个正解的存在性问题。

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Once the fault was finally fixed the FTSE 100 index of leading shares fell some 120 points to 6, 307 - its lowest point for more than two months.

BBC: London shares chaos