8 citations · 9 across the 3 of their papers we have counts for
3 papers
math.CO2017★ 8 cited
Protection Number in Plane Trees
Clemens Heuberger, Helmut Prodinger
The protection number of a plane tree is the minimal distance of the root to a leaf; this definition carries over to an arbitrary node in a plane tree by considering the maximal su…
math.NT2009★ 1 cited
A precise description of the p-adic valuation of the number of alternating sign matrices
Clemens Heuberger, Helmut Prodinger
Following Sun and Moll, we study v_p(T(N)), the p-adic valuation of the counting function of the alternating sign matrices. We find an exact analytic expression for it that exhibit…
math.CO2001
On a functional-difference equation of Runyon, Morrison, Carlitz, and Riordan
Helmut Prodinger
A certain functional-difference equation that Runyon encountered when analyzing a queuing system was solved in a combined effort of Morrison, Carlitz, and Riordan. We simplify that…