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Hook Length Formulas for Partitions and Plane Trees

Yet another generalization of Postnikov's hook length formula for binary trees

By Guo-Niu Han

[download the paper: .ps - .pdf, 4 pages, 2008/04/07]

Abstract. We discover another one-parameter generalization of Postnikov's hook length formula for binary trees. The particularity of our formula is that the hook length hv appears as an exponent. As an application, we derive another simple hook length formula for binary trees when the underlying parameter takes the value 1/2.


The Main Theorem is the following hook length formula for binary trees:


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