Congruences for the q-secant Numbers
                    
                        
                            نویسندگان
                            
                            
                        
                        
                    
                    
                    چکیده
منابع مشابه
Congruences for q-Lucas Numbers
For α, β, γ, δ ∈ Z and ν = (α, β, γ, δ), the q-Fibonacci numbers are given by F ν 0 (q) = 0, F ν 1 (q) = 1 and F ν n+1(q) = q αn−βF ν n (q) + q γn−δF ν n−1(q) for n > 1. And define the q-Lucas number Ln(q) = F ν n+1(q)+ q γ−δF ν∗ n−1(q), where ν∗ = (α, β− α, γ, δ − γ). Suppose that α = 0 and γ is prime to n, or α = γ is prime to n. We prove that Ln(q) ≡ (−1) (mod Φn(q)) for n > 3, where Φn(q) i...
متن کاملDoubloons and q-secant numbers
Based on the evaluation at t = −1 of the generating polynomial for the hyperoctahedral group by the number of descents, an observation recently made by Hirzebruch, a new q-secant number is derived by working with the Chow-Gessel q-polynomial involving the flag major index. Using the doubloon combinatorial model we show that this new q-secant number is a polynomial with positive integral coeffic...
متن کاملThe q-tangent and q-secant numbers via continued fractions
It is well known that the (−1)-evaluation of the enumerator polynomials of permutations (resp. derangements) by the number of excedances gives rise to tangent numbers (resp. secant numbers). Recently, two distinct q-analogues of the latter result have been discovered by Foata and Han, and Josuat-Vergès, respectively. In this paper, we will prove some general continued fractions expansions formu...
متن کاملThe (t,q)-Analogs of Secant and Tangent Numbers
To Doron Zeilberger, with our warmest regards, on the occasion of his sixtieth birthday. Abstract. The secant and tangent numbers are given (t, q)-analogs with an explicit com-binatorial interpretation. This extends, both analytically and combinatorially, the classical evaluations of the Eulerian and Roselle polynomials at t = −1.
متن کاملCongruences for the Fishburn Numbers
The Fishburn numbers, ξ(n), are defined by a formal power series expansion ∞ ∑ n=0 ξ(n)q = 1 + ∞ ∑ n=1 n ∏ j=1 (1− (1− q)). For half of the primes p, there is a non–empty set of numbers T (p) lying in [0, p− 1] such that if j ∈ T (p), then for all n ≥ 0, ξ(pn+ j) ≡ 0 (mod p). 2010 Mathematics Subject Classification: 05A19, 11F20, 11P83
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: European Journal of Combinatorics
سال: 1980
ISSN: 0195-6698
DOI: 10.1016/s0195-6698(80)80027-8