“sigma algebra”的概念、定义、翻译、参考文献-科学参考

单词	sigma algebra
释义	sigma algebra [`sig·mǝ `al·jǝ·brǝ] ^MATHEMATICS A collection of subsets of a given set which contains the empty set and is closed under countable union and complementation of sets. Also known as sigma field.
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科学参考收录了103327条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。