Functional Analysis : A question abaout extensions without use the Banach Theorem or Zorn's lemma .
96717
Hahn-Banach Theorem for separable spaces without Zorn's Lemma
6450
Show $\mathbb{E}[f(X)g(X)] \geq \mathbb{E}[f(X)]\mathbb{E}[g(X)]$ for $f,g$ bounded, nondecreasing
63701
An example of a regular function over an open set
139367
Hahn Banach Theorem: Transfinite Induction
97994
Orthogonality Relations Exercise, Brezis' Book Functional Analysis
144557
Linearly independent functionals
125190
Convergence to function that is not measurable
73462
Nested sequences of balls in a Banach space
68769
book recommendation on functional analysis
134492
Proving that a Hölder space is a Banach space
87655
Consequence of the Hahn-Banach Theorem
133707
Notions of strong and weak convergence for $L^{2}(\mathbb R, \lambda)$ where $f_{n}(x)=1_{[n,n+1]}(x)$
22394
Compact operator maps weakly convergent sequences into strongly convergent sequences
17779
Proving the Limit of a Sequence of without the Dominated Convergence Theorem
78344
Nonconstant linear functional on a topological vector space is an open mapping
98363
Expanding two-variable function $f(x,y)$ over the complete sets $\{ g_{i}(x) \}$ and $\{ h_{j}(y) \}$
64197
Subgradients of non-convex functions