In mathematics, ring theory is the study of rings, algebraic structures in which addition and multiplication are defined and have similar properties to those familiar from the integers.

Representation theory is a branch of mathematics that studies abstract algebraic structures by representing their elements as linear transformations of vector spaces. It also studies modules over these abstract algebraic structures.

Michiel Hazewinkel has written:

'Abelian extensions of local fields' -- subject(s): Abelian groups, Algebraic fields, Galois theory

'Encyclopaedia of Mathematics (6) (Encyclopaedia of Mathematics)'

'Encyclopaedia of Mathematics on CD-ROM (Encyclopaedia of Mathematics)'

'On norm maps for one dimensional formal groups' -- subject(s): Class field theory, Group theory, Power series

'Encyclopaedia of Mathematics (3) (Encyclopaedia of Mathematics)'

'Encyclopaedia of Mathematics (7) (Encyclopaedia of Mathematics)'

'Encyclopaedia of Mathematics (10) (Encyclopaedia of Mathematics)'

'Encyclopaedia of Mathematics, Supplement I (Encyclopaedia of Mathematics)'

K. Burdzy has written:

'Multidimensional Brownian excursions and potential theory' -- subject(s): Brownian motion processes, Potential theory (Mathematics)

Michel Waldschmidt has written:

'Diophantine Approximation on Linear Algebraic Groups'

'Transcendence methods' -- subject(s): Transcendental numbers, Algebraic number theory

'Linear independence of logarithms of algebraic numbers' -- subject(s): Linear algebraic groups, Linear dependence (Mathematics), Algebraic fields