splitting of exact sequence, graded Fréchet space, continuous linear right inverse, Spaces defined by inductive or projective limits (LB, LF, etc.), convolution operators, \(\overline\partial\)-Neumann problems and formal complexes in context of PDEs, Theorems of Hahn-Banach type; extension and lifting of functionals and operators, reduced spectrum, Locally convex Fréchet spaces and (DF)-spaces, exact complex, Overdetermined systems of PDEs with constant coefficients, space of smooth functions, Topological linear spaces of continuous, differentiable or analytic functions, linear differential operators with constant coefficients, Methods of algebraic topology in functional analysis (cohomology, sheaf and bundle theory, etc.), Sequence spaces (including Köthe sequence spaces), Analysis