Basis for the linear spacer $\ell^p$
75429
A Hamel basis for $\ell^p$?
119003
Complement of $c_{0}$ in $\ell^{\infty}$
90691
Linear independence of vectors over larger fields
66610
Finding a correspondence between $\{0,1\}^A$ and $\mathcal P(A)$
26497
Take $\mathbb{R}$ as a vector space over $\mathbb{Q}$, then a basis for $\mathbb{R}$, then $|B|=2^{\aleph_0}$
12698
Orthonormal basis for $\mathcal{L}^2([0,1])$
117476
Isometries between dual factor space and annihilator
50160
The quotient norm on $\ell^{\infty}(\mathbb{N}) / c_0 (\mathbb{N})$ is given by $\limsup_{n \in \mathbb{N}} |x_n|$.
23037
Computing the order of $\mathrm{SL}_2(\mathbb F_p)$ as the kernel of $\mathrm{GL}_2(\mathbb F_p)$
142097
Finding the dimension of the orthogonal complement
4163
Schauder basis of $(c,\|\cdot\|_{\infty})$
95601
Is the multiplication operator on $\ell^p$ compact?
101506
Why is $1, (x-5)^2, (x-5)^3$ a basis of $U=\{p \in \mathcal P_3(\mathbb R) \mid p'(5)=0\}$?
81879
$Av=λv$ basis proof problems
128558
Inequality between $\ell^p$-norms
43503
Bases of complex vector spaces and the axiom of choice
26112
Inclusion of $l^p$ space for sequences