Showing that if $E^*$ is reflexive, then $E$ is reflexive , for a Banach space $E$.
6955
A Banach space is reflexive if and only if its dual is reflexive
34071
Contractive condition implies the sequence is Cauchy
59424
Showing that $B=\{(x,y) \in \Bbb{R^2} \mid \ xy>0 \}$ is an open set
104607
Hahn-Banach theorem, dual space
143646
Is it possible to prove reflexive, symmetric and transitive properties of equality and the transitive property of inequality?
43197
Showing that two definitions of $\limsup$ are equivalent
38896
Prove that $A$ is bounded operator on $\ell^p$ and find $\| A\|$
50946
Separable Hilbert space have a countable orthonormal basis
53883
If every absolutely convergent series is convergent then $X$ is Banach
126744
Is any Banach space a dual space?
43504
Proving the existence of a complement subspace $U' \subset V$.
68781
proving if $a \le b$ then $\sup(A) \le \inf(B)$
95074
Separability of $l^{p}$ spaces
156727
A step in the proof of Characterization of $W^{1,\infty}$
15839
equivalent norms in Banach spaces of infinite dimension
118049
Show that $\mathbb{R}^{\mathbb{R}} = U_{e} \oplus U_{o}$
78754
Showing that $E[X|X<x]$ is smaller or equal than $E[X]$ for all x