到達不能基数
1. Inaccessible cardinalIn set theory, an uncountable regular cardinal number is called weakly inaccessible if it is a weak limit cardinal, and strongly inaccessible, or just inaccessible, if it is a strong limit cardinal. Some authors do not require weakly and strongly inaccessible cardinals to be uncountable (in which case is strongly inaccessible). Weakly inaccessible cardinals were introduced by Hausdorff (1908), and strongly inaccessible ones by Sierpiński & Tarski (1930) and Zermelo (1930).
Read “Inaccessible cardinal” on English Wikipedia
Read “到達不能基数” on Japanese Wikipedia
Read “Inaccessible cardinal” on DBpedia
Read “Inaccessible cardinal” on English Wikipedia
Read “到達不能基数” on Japanese Wikipedia
Read “Inaccessible cardinal” on DBpedia
Discussions
Log in to talk about this word.