Foundations of Modern Probability
Group theory - Dover
Topology and Geometry
Mathematics of Choice Or How to Count Without Counting
Mathematical Puzzles a Connoisseurs Collection
(McGraw-Hill series in electrical and computer engineering. Circuits and systems). The Fourier Transform and Its Applications
Solutions of ill-posed problems
Numerical solution of SDE through computer experiments
Integrability. The Seiberg-Witten and Whitham equations
Abstract algebra
Problems in Mathematical Analysis I. Real Numbers, Sequences and Series
Intermediate Dynamics: A Linear Algebraic Approach
Functions of bounded variation and free discontinuity problems
Algebra through practice. Book 6 Rings, fields and modules
An Introduction to the Theory of Groups
Probability