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IJAC
2008
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13 years 11 months ago
A Presentation of the Dual Symmetric Inverse Monoid
The dual symmetric inverse monoid I n is the inverse monoid of all isomorphisms between quotients of an n-set. We give a monoid presentation of I n and, along the way, establish c...
David Easdown, James East, D. G. Fitzgerald
IJAC
2008
100views more  IJAC 2008»
13 years 11 months ago
Constructing the Group Preserving a System of Forms
Peter A. Brooksbank, E. A. O'Brien
IJAC
2008
97views more  IJAC 2008»
13 years 11 months ago
Random Generation of Finitely Generated Subgroups of a Free Group
We give an efficient algorithm to randomly generate finitely generated subgroups of a given size, in a finite rank free group. Here, the size of a subgroup is the number of vertic...
Frédérique Bassino, Cyril Nicaud, Pa...
IJAC
2008
72views more  IJAC 2008»
13 years 11 months ago
Determinants Related to Dirichlet Characters Modulo 2, 4 and 8 of binomial Coefficients and the Algebra of Recurrence Matrices
: Using recurrence matrices, defined and described with some details, we study a few determinants related to evaluations of binomial coefficients on Dirichlet characters modulo 2, ...
Roland Bacher
IJAC
2008
38views more  IJAC 2008»
13 years 11 months ago
Rational Subsets in HNN-Extensions and Amalgamated Products
Markus Lohrey, Géraud Sénizergues
IJAC
2008
50views more  IJAC 2008»
13 years 11 months ago
Weakly P-Small not P-Small Subsets in Groups
Taras O. Banakh, Nadia Lyaskovska
IJAC
2008
158views more  IJAC 2008»
13 years 11 months ago
The Braid rook Monoid
species and combinatorial Hopf algebras on the one hand, and quantum groups and the classification theory of abstract Hopf algebras on the other. This is part of joint work with Sw...
Eddy Godelle