Geometric aspects of global bifurcation in nonlinear elasticity -- The branching of solutions of Einstein's equations -- What does supergravity teach us about gravity? -- Classical 1/2 spin particles interacting with gravitational fields: A supersymmetric model -- Generalized constraint algorithm and special presymplectic manifolds -- Deformations and quantization -- Holomorphic gauge theory -- A geometric variational formalism for the theory of nonlinear waves -- Geometry of jet bundles and the structure of lagrangian and hamiltonian formalisms -- Involution theorems.