“…The Banach space setting of continuous functions has been extensively used in the study of bifurcations arising from DDEs, see e.g. [8,17,19,21,37,47,60], while the Hilbert space setting is typically adopted for the approximation of DDEs or their optimal control; see e.g. [1-3, 9, 22, 28, 33, 35, 36, 42].…”