Geodesic

Sommaire du Fascicule no. 1

On a generalization of cyclic semifields
p. 1-34
Operated semigroups, Motzkin paths and rooted trees
p. 35-62
Smith normal form and acyclic matrices
p. 63-80
Five-torsion in the homology of the matching complex on 14 vertices
p. 81-90
Relative $(pn,p,pn,n)$-difference sets with $GCD(p,n)=1$
p. 91-106
Homogeneous factorisations of complete graphs with edge-transitive factors
p. 107-132

Sommaire du Fascicule no. 2

Chains in the Bruhat order
p. 133-174
The centers of spin symmetric group algebras and Catalan numbers.
p. 175-193
On the order of a non-Abelian representation group of a slim dense near hexagon
p. 195-213
The case of equality in the Livingstone-Wagner theorem.
p. 215-227
Leading coefficients of Kazhdan-Lusztig polynomials for Deodhar elements.
p. 229-260
A definition of the crystal commutor using Kashiwara's involution
p. 261-268

Sommaire du Fascicule no. 3

Dimension and enumeration of primitive ideals in quantum algebras
p. 269-294
An explicit construction of type A Demazure atoms
p. 295-313
The crystal commutor and Drinfeld's unitarized $R$-matrix
p. 315-335
Chirality groups of maps and hypermaps
p. 337-355
Integral modular data and congruences
p. 357-387
Arithmetical rank of squarefree monomial ideals of small arithmetic degree
p. 389-404

Sommaire du Fascicule no. 4

Compositions inside a rectangle and unimodality
p. 405-411
Descent systems for Bruhat posets
p. 413-435
On $m$-regular systems on $\Bbb H (5,q^{2})$
p. 437-445
A modular absolute bound condition for primitive association schemes
p. 447-456
Tetravalent one-regular graphs of order $2pq$
p. 457-471
Combinatorial interpretation and positivity of Kerov's character polynomials
p. 473-507
Knuth relations for the hyperoctahedral groups
p. 509-535
Erratum: Transitive permutation groups of prime-squared degree.
p. 537