I am looking for an example of two strongly continuous unitary semigroups $U(t),V(t)$ for which the Trotter limit $[U(t/n)V(t/n)]^n \phi$ does not exist for some $t,\phi$.
2026-03-26 04:51:53.1774500713
Example of strongly continuous unitary semigroup where Trotter limit does not exist
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