2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/63424Several new invariants for Lie algebroids have been discovered recently. We give an overview of these invariants and establish several relationships between them.20 pages; v2: Many typos corrected, and exposition improved; v3: Final revised form to be published by "Differential Geometry and its Applications"Differential GeometryAlgebraic Geometry58H05, 53D17text