资讯

We find necessary and sufficient conditions for a separable metric space Y to possess the property that for any measurable space (X, A) and probability measure P on X × Y, P can be factored. Journal ...
The Poincaré conjecture has been in the news lately. Russian mathematician Grigori Perelman submitted a proof 3 years ago claiming that he had proved the famous conjecture. In August, he won a ...
The Associated Press analyzed data from the Stanford Education Data Archive and found that in the decade before the pandemic, girls had not only improved math scores nationwide, but they were also ...