The core is a set which satisfies a systemof weak linear inequalities, so it is closed and convex.
中心是一个满足弱线性不等式的合集，因此它是封闭的、凸的。
2
The previous system was highly fragmented, with certain hospitals only available to specific groups and high inequalitiesof care.
以往的体制具有高度的分散性，有些医院仅仅面向某些特殊群体，医疗服务极其不平等。
3
The article discusses rank of a matrix by the solution theorem ofsystemof homogeneous linear equations, and proves several famous inequalities and two propositions on rank of a matrix.