Ordinary Differential Equations: Basics and BeyondThis book develops the theory of ordinary differential equations (ODEs), starting from an introductory level (with no prior experience in ODEs assumed) through to a graduate level treatment of the qualitative theory, including bifurcation theory (but not chaos). While proofs are rigorous, the exposition is reader friendly, aiming for the informality of face to face interactions. A unique feature of this book is the integration of rigorous theory with