منابع مشابه
A Remarkable q,t-Catalan Sequence and q-Lagrange Inversion
We introduce a rational function Cn(q; t) and conjecture that it always evaluates to a polynomial in q; t with non-negative integer coe cients summing to the familiar Catalan number 1 n+1 2n n . We give supporting evidence by computing the specializations Dn(q) = Cn(q; 1=q) q(n2) and Cn(q) = Cn(q; 1) = Cn(1; q). We show that, in fact, Dn(q) q-counts Dyck words by the major index and Cn(q) q-cou...
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ژورنال
عنوان ژورنال: Advances in Mathematics
سال: 1995
ISSN: 0001-8708
DOI: 10.1006/aima.1995.1051