{ "id": "1701.08044", "version": "v1", "published": "2017-01-27T13:10:40.000Z", "updated": "2017-01-27T13:10:40.000Z", "title": "A new bijective proof of Babson and Steingrímsson's conjecture", "authors": [ "Joanna N. Chen", "Shouxiao Li" ], "categories": [ "math.CO" ], "abstract": "Babson and Steingr\\'{\\i}msson introduced generalized permutation patterns and showed that most of the Mahonian statistics in the literature can be expressed by the combination of generalized pattern functions. Particularly, they defined a new Mahonian statistic in terms of generalized pattern functions, which is denoted $stat$. Given a permutation $\\pi$, let $des(\\pi)$ denote the descent number of $\\pi$ and $maj(\\pi)$ denote the major index of $\\pi$. Babson and Steingr\\'{\\i}msson conjectured that $(des,stat)$ and $(des,maj)$ are equidistributed on $S_n$. Foata and Zeilberger settled this conjecture using q-enumeration, generating functions and Maple packages ROTA and PERCY. Later, Burstein provided a bijective proof of a refinement of this conjecture. In this paper, we give a new bijective proof of this conjecture.", "revisions": [ { "version": "v1", "updated": "2017-01-27T13:10:40.000Z" } ], "analyses": { "keywords": [ "bijective proof", "steingrímssons conjecture", "mahonian statistic", "generalized pattern functions", "maple packages rota" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }