Algebra Algebraic geometry Arithmetic algebraic geometry (Diophantine geometry) Arithmetic problems. Diophantine geometry Arithmetical algebraic geometry Coding theory Combinatorics Communication, information Corps finis Cryptography Designs and configurations Exponential sums and character sums Finite fields (Algebra) Finite fields and commutative rings (number-theoretic aspects) Finite geometry and special incidence structures Geometry Géométrie algébrique arithmétique Information and communication, circuits Intermediate MATHEMATICS Number theory Theory of error-correcting codes and error-detecting codes Théorie des nombres