منابع مشابه
Chromatic Statistics for Triangulations and Fuß-Catalan Complexes
We introduce Fuß–Catalan complexes as d-dimensional generalisations of triangulations of a convex polygon. These complexes are used to refine Catalan numbers and Fuß–Catalan numbers, by introducing colour statistics for triangulations and Fuß–Catalan complexes. Our refinements consist in showing that the number of triangulations, respectively of Fuß–Catalan complexes, with a given colour distri...
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In type A, the q, t-Fuß-Catalan numbers Cat n (q, t) can be defined as a bigraded Hilbert series of a module associated to the symmetric group Sn. We generalize this construction to (finite) complex reflection groups and exhibit some nice conjectured algebraic and combinatorial properties of these polynomials in q and t. Finally, we present an idea how these polynomials could be related to some...
متن کاملq, t-Fuß–Catalan numbers for finite reflection groups
In type A, the q, t-Fuß–Catalan numbers can be defined as the bigraded Hilbert series of a module associated to the symmetric group. We generalize this construction to (finite) complex reflection groups and, based on computer experiments, we exhibit several conjectured algebraic and combinatorial properties of these polynomials with nonnegative integer coefficients. We prove the conjectures for...
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Though the value of a right should be not lower than zero, negative voting premiums often appear in recent empirical evidence. The present paper highlights some possible measurement errors and contemporary proposes a new measure, the vote segment, which incorporates all dividend privileges. Results from Italian non-voting shares listed in the 1999-2008 period show that the more accurate measure...
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The repellency and insecticidal efficacy of Nopikex®, a soap formulation containing 20% diethyl toluamide and 0.5% permethrin, was evaluated against a laboratory colony of phlebotomine sand flies (Lutzomya longipalpis). The repellency of Nopikex soap was also compared with that of a placebo soap against another species (Lu. Youngi) in a forest near Tulua, Valle del Cauca, Colombia. In laborator...
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ژورنال
عنوان ژورنال: OP-JOURNAL
سال: 2016
ISSN: 0178-1715,1439-2496
DOI: 10.1055/s-0041-109444