Algebraic geometry -- Arithmetic problems. Diophantine geometry -- Arithmetic problems. Diophantine geometryArithmetical algebraic geometryCoding theoryCombinatorics -- Designs and configurations -- Designs and configurationsCongressesFinite fields (Algebra)Geometry -- Finite geometry and special incidence structures -- Finite geometry and special incidence structuresInformation and communication, circuits -- Communication, information -- CryptographyInformation and communication, circuits -- Theory of error-correcting codes and error-detecting codes -- Theory of error-correcting codes and error-detecting codesNumber theoryNumber theory -- Arithmetic algebraic geometry (Diophantine geometry) -- Arithmetic algebraic geometry (Diophantine geometry)Number theory -- Exponential sums and character sums -- Exponential sums and character sumsNumber theory -- Finite fields and commutative rings (number-theoretic aspects) -- Finite fields and commutative rings (number-theoretic aspects)