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1answer
28 views

how big is the smallest inaccessible cardinal?

I know a cardinal is inaccessible if it is uncountable,regular,strong limit.And we cannot prove its existence in ZFC.but by axiom of choice,every infinite cardinal is an aleph.so can you write the ...
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1answer
187 views

example of weakly inaccessible cardinal that is not a strongly inaccessible cardinal

As I study through inaccessible cardinals, I find many examples that show some cardinal being both weakly inaccessible and strongly inaccessible. So, can anyone show me the example of weakly ...