Table of contents : On associative algebras of minimal rank....Pages 1-24 Construction of primitive idempotents for a variable codes....Pages 25-35 Multivariate polynomials in coding theory....Pages 36-60 Enumeration of self dual 2k circulant codes....Pages 61-70 Codes, groups and invariants....Pages 71-78 On a conjecture concerning coverings of Hamming space....Pages 79-89 An improved upper bound on covering radius....Pages 90-106 Association schemes and difference sets defined on two weight codes....Pages 107-111 Automorphisms of two families of extended non binary cyclic Goppa Codes....Pages 112-121 Some quasi-perfect cyclic codes....Pages 122-129 Explicit Kerdock codes over GF(2)....Pages 130-135 Une classe de codes 2-correcteurs adaptes aux systems d'information formates....Pages 136-144 LOUSTICC simulation software : Experimental results of coding systems....Pages 145-153 An algorithm of complete decoding of double-error-correcting goppa codes....Pages 154-160 On the number of divisors of a polynomial over GF(2)....Pages 161-168 Multivariate polynomial factoring and detection of true factors....Pages 169-177 Discriminants and the irreducibility of a class of polynomials....Pages 178-181 Computational aspects of reduction strategies to construct resolutions of monomial ideals....Pages 182-197 Designs arising from symplectic geometry....Pages 198-205 Distance — transitive graphs and the problem of maximal subgroups of symmetric groups....Pages 206-214 Can a fast signature scheme without secret key be secure....Pages 215-241 Manipulation of recurrence relations in computer algebra....Pages 242-252 Some design principles for a mathematical knowledge representation system: A new approach to scientific calculation....Pages 253-265