This book constitutes the refereed proceedings of the 18th International Symposium on Applied
Algebra Algebraic Algorithms and Error-Correcting Codes AAECC-18 held in Tarragona Spain
in June 2009. The 22 revised full papers presented together with 7 extended absstracts were
carefully reviewed and selected from 50 submissions. Among the subjects addressed are block
codes including list-decoding algorithms algebra and codes: rings fields algebraic geometry
codes algebra: rings and fields polynomials permutations lattices cryptography:
cryptanalysis and complexity computational algebra: algebraic algorithms and transforms
sequences and boolean functions.
