- Difference and functional equations--Difference equations--Difference equations, scaling ($q$-differences). msc (1)
- Differentiable dynamical systems--Congresses (1)
- Differential geometry--Classical differential geometry--Curves in Euclidean space. msc (1)
- Dynamical systems and ergodic theory--Finite-dimensional Hamiltonian, Lagrangian, contact, and nonholonomic systems--General theory, relations with symplectic geometry and topology. msc (1)
- Mechanics of particles and systems--Axiomatics, foundations--Axiomatics, foundations. msc (1)
- Nonassociative rings and algebras--Lie algebras and Lie superalgebras--Lie algebras of linear algebraic groups. msc (1)
- Ordinary differential equations--Differential equations in the complex domain--Algebraic aspects (differential-algebraic, hypertranscendence, group-theoretical). msc (1)
- Orthogonal polynomials--Congresses (1)
- Partial differential equations--General topics--Geometric theory, characteristics, transformations. msc (1)
- Partial differential equations--Representations of solutions--Solutions in closed form. msc (1)
- Topological groups, Lie groups--Noncompact transformation groups--General theory of group and pseudogroup actions. msc (1)