Banach space Caputo derivative Fourier transform History of engineering & technology Kung–Traub method Laplace transform Lipschitz constant Mei symmetry Mittag–Leffler function Opportunistic complex social network PageRank vector adapted PageRank algorithm adiabatic invariant bifurcation theory biplex networks complex networks complex systems conserved quantity cooperative divided difference fractional calculus function approximation generalized Fourier law local convergence mobile robots multi-agent system (MAS) multiplex networks neighbor node networks centrality non-Fourier heat conduction