A projection on a complex Banach space $X$ is said to hermitian if its numerical range is real.
Does anyone know an example of an hermitian projection on $C[0,1]_{\mathbb C}=C[0,1]\oplus i C[0,1]$?
2026-04-15 10:27:19.1776248839
Hermitian Projections on $C[0,1]$
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