2 http://hdl.handle.net/10338.dmlcz/107648 2 Natural affinors on $r$-jet prolongation of the tangent bundle http://hdl.handle.net/10338.dmlcz/107657 Natural affinors on $r$-jet prolongation of the tangent bundle Anti-holonomic jets and the Lie bracket http://hdl.handle.net/10338.dmlcz/107656 Anti-holonomic jets and the Lie bracket Conjugacy criteria for second order linear difference equations http://hdl.handle.net/10338.dmlcz/107655 Conjugacy criteria for second order linear difference equations Invariant vector fields of Hamiltonians http://hdl.handle.net/10338.dmlcz/107654 Invariant vector fields of Hamiltonians