# Books written by Robert Langlands.

For his visionary program connecting representation theory to number theory Robert langlands was awarded the Abel Prize in 2018.

## On the Functional Equations Satisfied by Eisenstein Series

## Base Change for GL(2)

R. Langlands shows, in analogy with Artin's original treatment of one-dimensional p, that at least for tetrahedral p, L(s, p) is equal to the L-function L(s, π) attached to a cuspdidal automorphic representation of the group GL(2, /A), /A being the adéle ring of the field, and L(s, π), whose definition is ultimately due to Hecke, is known to be entire.

## Euler products

James K. Whittemore lectures in mathematics given at Yale University