Suppose $T:A\mapsto B$ is an unbounded closed linear operator between Hilbert spaces.
Is there a way to construct a bounded closed linear operator $T'$ between $A$ and $B$ satisfying $$ Ker(T)= Ker(T')? $$
2026-03-28 16:19:35.1774714775
Bounding an Unbounded operator and preserving Kernel
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