Using cone fixed point theorem we get the existence of one and two positive solutions.

利用锥上的不动点定理得到了一个正解和两个正解的存在性。

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This paper deals with the existence of two positive solutions for critical elliptic equations with a changed sign perturbation and with an auxiliary condition.

讨论了带变号扰动并且具有一定附加条件的临界椭圆方程的两个正解存在性。

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By making use of variational methods, we obtain two positive solutions ofp(x)-Laplace equation, which generlizes the corresponding relusts of Laplace equation.

利用凸性分析方法，在方程具有边界条件和正初始能量情况下得到整体解不存在的充分条件。

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The search for antimatter, that staple of science fiction, was the consequence of an equation about electrons which has two sets of solutions, one positive and one negative.

ECONOMIST: In praise of particle physics