Top network posts

• 17 Why do most of the books in mathematics not include answers?
• 13 A closed subspace of a reflexive Banach space is reflexive
• 13 $L^{\infty}$ is a Banach Space
• 12 Number of elements of order $2$ in $S_n$
• 12 If $T^2 = I$, how one can proof that $V = W \oplus U$?
• 11 Prove : If $\sum_na_nb_n$ converges whenever $\sum b_n^2 \lt \infty,$ then $\sum a_n^2<\infty$
• 11 Does Thompson's group $V$ have property AP?
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