Hecke operators on the -analogue of group cohomology.
Hecke-Clifford algebras and spin Hecke algebras. IV: Odd double affine type.
Heights of spin characters in characteristic 2.
Hereditary and semi-hereditary monoids.
Hereditary endomorphism monoids of projective acts.
Hereditary endomorphism rings of mixed Abelian groups.
Hereditary orders
Hereditary radicals and 0-bands of semigroups.
Hereditary torsion classes of S-systems.
Heuristics for the Whitehead minimization problem.
Hexagonal quasigroups
Hexavalent -transitive graphs
Let be a finite simple undirected graph with a subgroup of the full automorphism group . Then is said to be -transitive for a positive integer , if is transitive on -arcs but not on -arcs, and -transitive if it is -transitive. Let be a stabilizer of a vertex in . Up to now, the structures of vertex stabilizers of cubic, tetravalent or pentavalent -transitive graphs are known. Thus, in this paper, we give the structure of the vertex stabilizers of connected hexavalent -transitive...
Hiérarchies de concaténation
Hierarchy of efficient generators of the symmetric inverse monoid.
High-dimensional knots corresponding to the fractional Fibonacci groups
We prove that the natural HNN-extensions of the fractional Fibonacci groups are the fundamental groups of high-dimensional knot complements. We also give some characterization and interpretation of these knots. In particular we show that some of them are 2-knots.
Higher dimensional algebra. VII: Groupoidification.
Higher fundamental functors for simplicial sets
Higher order relations for a numerical semigroup
Higher-dimensional algebra. V: 2-Groups.
Highly transitive subgroups of the symmetric group on the natural numbers
Highly transitive subgroups of the symmetric group on the natural numbers are studied using combinatorics and the Baire category method. In particular, elementary combinatorial arguments are used to prove that given any nonidentity permutation α on ℕ there is another permutation β on ℕ such that the subgroup generated by α and β is highly transitive. The Baire category method is used to prove that for certain types of permutation α there are many such possibilities for β. As a simple corollary,...