Differential Equations & Applications · Volume 14, Issue 1 Extremal solutions at infinity for symplectic systems on time scales I – Genera of conjoined bases 14-07 Pages 99-136 DOI 10.7153/dea-2022-14-07 Downloads Short PDF Full PDF PNG Authors Iva Dřímalová Keywords symplectic system on time scale genus of conjoined bases antiprincipal solution at infinity principal solution at infinity nonoscillation Riccati matrix dynamic equation Moore-Penrose pseudoinverse Subject classes 34N05 34C10 39A12 39A21