Inaccessible cardinal

（重定向自Strongly inaccessible cardinal）

In set theory, an uncountable cardinal is inaccessible if it cannot be obtained from smaller cardinals by the usual operations of cardinal arithmetic. More precisely, a cardinal κ is strongly inaccessible if it is uncountable, it is not a sum of fewer than κ cardinals that are less than κ, and $\alpha < \kappa$ implies $2^\alpha < \kappa$ .

单词	Strongly inaccessible cardinal
释义	Strongly inaccessible cardinal 英语百科 Inaccessible cardinal （重定向自Strongly inaccessible cardinal） In set theory, an uncountable cardinal is inaccessible if it cannot be obtained from smaller cardinals by the usual operations of cardinal arithmetic. More precisely, a cardinal κ is strongly inaccessible if it is uncountable, it is not a sum of fewer than κ cardinals that are less than κ, and $\alpha < \kappa$ implies $2^\alpha < \kappa$ .
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