Mathematics 30 Calculus 3 Functions 3 Congresses 2 Geometry, Algebraic 2 Hilbert space 2 Invariant subspaces 2 Logic, Symbolic and mathematical 2 Operator algebras 2 Pure Mathematics 2 Algebra 1 Algebra, Abstract 1 Bionomial theorem 1 Chemistry, Physical and theoretical 1 Cryptography 1 Differential equations 1 Exponential 1 Formalist approach 1 Galois theory 1 Geometry 1 Geometry, Hyperbolic 1 Goldbach conjecture 1 Integration 1 Linear algebra 1 MATHEMATICS / Functional Analysis 1 MATHEMATICS / General 1 MATHEMATICS / Set Theory 1 Mathematics -- Popular works. MATHEMATICS / Applied. Mathematics 1 Mathematics Teaching 1 Mechanics 1