Combinatorialists and Discrete Geometers

Faculty Members

• Azer Akhmedov
• Daryl Cooper
• Jon McCammond

Graduate Students

• Daniel Rife
• Jared Hersh
• John Cloutier
• Matt Macaulay
• Peterson Tretheway
• Rena Levitt (nee Hull)
• Thomas Roybal

`Emeritus' Members

• Aaron Galbraith
• Gizem Karaali
• Landon Rabern

(1 (2 (3 (4 5))))   (1 (2 ((3 4) 5)))
(1 ((2 3) (4 5)))   (1 ((2 (3 4)) 5))
(1 (((2 3) 4) 5))   ((1 2) (3 (4 5)))
((1 2) ((3 4) 5))   ((1 (2 3)) (4 5))
((1 (2 (3 4))) 5)   ((1 ((2 3) 4)) 5)
(((1 2) 3) (4 5))   (((1 2) (3 4)) 5)
(((1 (2 3)) 4) 5)   ((((1 2) 3) 4) 5)

Four representations of the Catalan numbers
by Robert Dickau for Math Forum