Reference request: linear operators into $L^\infty$ can be extended presrving the norm.
71001
Do continuous linear functions between Banach spaces extend?
82018
Norm equivalence (Frobenius and infinity)
59929
Why is $(e_n)$ not a basis for $\ell_\infty$?
158082
Is $\|A^n\|=\|A\|^n$ true for any normal operator in a Hilbert space?
92281
Normal Operator that is not Self-Adjoint
14840
$c_0$ is a closed subspace of $l^{\infty}$
84448
Any positive linear functional $\phi$ on $\ell^\infty$ is a bounded linear operator and has $\|\phi \| = \phi((1,1,...)) $
72240
Prove that if a linear operator is continuous, then it is bounded.
61484
Continuously invertible operators
33485
norm of integral operator in $C([0,1])$
67283
Is $L^{p}$ space with alternate norm Banach?
8805
Bounded linear operators that commute with translation
80618
Surjective bounded operator in Banach spaces without bounded right-inverse
111128
The Duals of $l^\infty$ and $L^{\infty}$
85019
How are big operators defined?
34272
Proving definition of norms induced by vector norms
143708
$L^1$ and $L^{\infty}$ are not reflexive