可算鎖条件
1. Countable chain conditionIn order theory, a partially ordered set X is said to satisfy the countable chain condition, or to be ccc, if every strong antichain in X is countable. There are really two conditions: the upwards and downwards countable chain conditions. These are not equivalent. We adopt the convention the countable chain condition means the downwards countable chain condition, in other words no two elements have a common lower bound.
Read “Countable chain condition” on English Wikipedia
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Read “Countable chain condition” on DBpedia
Read “Countable chain condition” on English Wikipedia
Read “可算鎖条件” on Japanese Wikipedia
Read “Countable chain condition” on DBpedia
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