Thesubjectofthisbookisgeometricintegratorsfordifferentialequationswithhighlyoscillatorysolutions,includingoscillation-preservingintegrators,continuous-stageERKNintegrators,nonlinearstabilityandconvergenceanalysisofERKNintegrators,functionally-fittedenergy-preservingintegrators,exponentialcollocationmethods,volume-preservingexponentialintegrators,globalerrorboundsofone-stageERKNintegratorsforsemilinearwaveequations,linearly-fittedconservative/dissipativeintegrators,energy-preservingschemesforKlei