If two functionals have the same kernel, then one is a multiple of the other
60655
$\ker T\subset \ker S\Rightarrow S=rT$ when $S$ and $T$ are linear functionals
92202
Linear separability for a sum of kernel functions
108329
If $T\alpha=c\alpha$, then there is a non-zero linear functional $f$ on $V$ such that $T^{t}f=cf$
44148
Functions that are their own inverse.
76140
The supremum norm is submultiplicative
84890
Extremising a functional with conditions
65971
Double dual mappings
63104
Dual cone of $K = \{(x,t) \mid \| \boldsymbol{x} \|_1 \le t \}$
127000
When does $V = \ker(f) \oplus \operatorname{im}(f)$?
25953
Solving a functional relation $f\left( x \cdot f(y)\right)=x^2 \cdot y^a$
109080
Is the kernel of a map to a finitely presented module finitely generated?
88603
verify equicontinuous functions
122190
Kernel of $T$ is closed iff $T$ is continuous
152740
How to intuitively explain what a kernel is?
144656
Linear functional and a bounded norm
52894
How to test if these two samples are from the same distribution?
95928
Independence and orthogonality