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Séminaire Lotharingien de Combinatoire, B67c (2012), 11 pp.

# Guo-Niu Han, Zhicong Lin and Jiang Zeng

# A Symmetrical *q*-Eulerian Identity

**Abstract.**
We find a *q*-analog of the following symmetrical identity involving
binomial coefficients
and Eulerian numbers
*A*_{n,m},
due to Chung, Graham and Knuth [*J. Comb.*, **1** (2010),
29-38]:
We
give two proofs, using generating function and bijections, respectively.

Received: February 17, 2012.
Accepted: March 17, 2012.
Final Version: March 23, 2012.

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