Etienne Aigner (1904–2002), Hungarian-born German fashion designer, and existing Fashion House of same name (Etienne Aigner AG)
An alternative bijective proof, given by Aigner and Ziegler and credited by them to André Joyal, involves a bijection between, on the one hand, n-node trees with two designated nodes (that may be the same as each other), and on the other hand, n-node directed pseudoforests.
Aigner moved onto LASK Linz in the First League for the 2011-12 season before transferring to SC Rheindorf Altach for the start of the 2012-13 season.
Korbinian Aigner, known as Apfelpfarrer ("apple pastor"), (born 11 May 1885, Hohenpolding; † 5 October 1966, Freising) was a Bavarian Catholic priest and pomologist.