algebraic algebraiccycles algebraictopology algebraicvarieties atiyah-singerindextheorem calculus calculusoftensors catastrophes(mathematics) celestialmechanics cobordismtheory congresses differentiabledynamicalsystems differentiablemappings differential differentialgeometrie differentialgeometry differentialoperators g-structures geometry globalanalysis(mathematics) heatequation hodgetheory hyperbolic indextheorems invariants knottheory laplacianoperator mathematicalanalysis mathematicaloptimization mathematik plane pontryaginclasses singularities(mathematics) stokes'theorem submanifolds three-bodyproblem topologicalmanifolds transformationgroups