16 citations · 43 across the 47 of their papers we have counts for
Showing 2008 · math.COShow all
3 papers · 2 filters
math.CO2008
On polytopes associated to factorisations of prime-powers
Roland Bacher
We study polytopes associated to factorisations of prime powers. These polytopes have explicit descriptions either in terms of their vertices or as intersections of closed halfspac…
math.CO2008★ 1 cited
On a family of tridiagonal matrices
Roland Bacher
We show that certain integral positive definite symmetric tridiagonal matrices of determinant are in one to one correspondence with elements of . We s…
math.CO2008
The special subgroup of invertible non-commutative rational power series as a metric group
Roland Bacher
We give an easy proof of Schützenberger's Theorem stating that non-commutative formal power series are rational if and only if they are recognisable. A byproduct of this proof is a…