Descriptive set theorists study the niche mathematics of infinity. Now, they’ve shown that their problems can be rewritten in ...
If $k_1, k_2,\ldots,k_n$ are cardinals with $k_1$ the cardinality of a nonmeasurable set, and for $i = 2, 3,\ldots,n k_i$ is the cardinality of a set of reals which ...
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