2 papers
math.CO2005
Permutation Tableaux and Permutation Patterns
Einar Steingrimsson, Lauren K. Williams
In this paper we introduce and study a class of tableaux which we call permutation tableaux; these tableaux are naturally in bijection with permutations, and they are a distinguish…
math.CO2005
Conway's napkin problem
Anders Claesson, T. Kyle Petersen
The napkin problem was first posed by John H. Conway, and written up as a `toughie' in "Mathematical Puzzles: A Connoisseur's Collection," by Peter Winkler. To paraphrase Winkler's…