P-partition products and fundamental quasi-symmetric function positivity
نویسندگان
چکیده
منابع مشابه
ar X iv : m at h / 06 09 24 9 v 1 [ m at h . C O ] 8 S ep 2 00 6 P - PARTITION PRODUCTS AND FUNDAMENTAL QUASI - SYMMETRIC FUNCTION POSITIVITY
We show that certain differences of products of P-partition generating functions are positive in the basis of fundamental quasi-symmetric functions Lα. This result interpolates between recent Schur positivity and monomial positivity results of the same flavor. We study the case of chains in detail, introducing certain " cell transfer " operations on compositions and an interesting related " L-p...
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ژورنال
عنوان ژورنال: Advances in Applied Mathematics
سال: 2008
ISSN: 0196-8858
DOI: 10.1016/j.aam.2007.01.003