Cucker-Smale model with time delay

<p style='text-indent:20px;'>We study the flocking model for continuous time introduced by Cucker and Smale adding a positive delay <inline-formula><tex-math id="M1">\begin{document}$ \tau $\end{document}</tex-math></inline-formula>. The goal of this article is to prove that same unconditional result non-delayed case valid in delayed case. A novelty we do not need impose any restriction on size id="M2">\begin{document}$ Furthermore, when occurs, velocities converge exponentially fast common one.</p>