id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ejde-1599	Wang, Tiantian; Fan, Hongxia	Topological properties of the solution set and T-controllability for second-order neutral evolution equations with delay	2025	13	.pdf	application/pdf	6899	388	68	= I; (iii) C(t)x is continuous in t on R for each fixed x ∈ X. Define the associated sine family {S(t) : t ∈ R} by S(t)x = ∫ t 0 C(s)xds, x ∈ X, t ∈ R. The infinitesimal generator of a strongly continuous cosine family {C(t) : t ∈ R} is the operator A : D(A) ⊂ X → X defined by Ax = d2 dt2 C(t)x |t=0, x ∈ D(A), where D(A) = {x ∈ X : C(·)x ∈ C2(R,X)}. +Bu(t) + f(t, x(a(t)), x[h(x(t), t)]), t ∈ J	cache/ejde-1599.pdf	txt/ejde-1599.txt