In rough set theory, the concept of roughness of knowledge is defined by equivalence relation and set inclusion.

在该理论中，知识粗糙性是通过等价关系和集包含定义的。

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Some geometric data of ellipse in hyperbolic space are considered, such as set inclusion, arc length, geodesic curvature, curvature, area and total curvature.

在双曲空间中，考察椭圆的包含关系，对弧长元素、测地曲率、曲率、面积及全曲率等几何量做出细致考察。

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But the Roma are distinct in culture - and this distinction is important, because if the government is unsure how many Roma people live in the UK, then it will not be able to get funds for initiatives to help the Roma out of the tens of billions of euros the European Union has set aside for social inclusion projects.

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To minimise the risk of including random concatenations of words, rare spellings or mistakes, any word or expression had to appear in the corpus at least 40 times to merit inclusion in the final, chronologically ordered set.

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Protesting about the inclusion of pink plastic bricks in a building set strikes me as trivialising what can indeed be a serious problem.

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