On a conjecture by Wilf about the Frobenius number

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

On a conjecture of Wilf

Let n and k be natural numbers and let S(n, k) denote the Stirling numbers of the second kind. It is a conjecture of Wilf that the alternating sum n ∑ j=0 (−1)S(n, j) is nonzero for all n > 2. We prove this conjecture for all n 6≡ 2, 2944838 mod 3145728 and discuss applications of this result to graph theory, multiplicative partition functions, and the irrationality of p-adic series.

متن کامل

On the Stanley-Wilf Conjecture for the Number of Permutations Avoiding a Given Pattern

Consider, for a permutation σ ∈ Sk, the number F (n, σ) of permutations in Sn which avoid σ as a subpattern. The conjecture of Stanley and Wilf is that for every σ there is a constant c(σ) < ∞ such that for all n, F (n, σ) ≤ c(σ). All the recent work on this problem also mentions the “stronger conjecture” that for every σ, the limit of F (n, σ) exists and is finite. In this short note we prove ...

متن کامل

The Füredi–Hajnal Conjecture Implies the Stanley–Wilf Conjecture

We show that the Stanley–Wilf enumerative conjecture on permutations follows easily from the Füredi–Hajnal extremal conjecture on 0-1 matrices. We apply the method, discovered by Alon and Friedgut, that derives an (almost) exponential bound on the number of some objects from a (almost) linear bound on their sizes. They proved by it a weaker form of the Stanley–Wilf conjecture. Using bipartite g...

متن کامل

Proof of the Wilf-Zeilberger Conjecture

In 1992, Wilf and Zeilberger conjectured that a hypergeometric term in several discrete and continuous variables is holonomic if and only if it is proper. Strictly speaking the conjecture does not hold, but it is true when reformulated properly: Payne proved a piecewise interpretation in 1997, and independently, Abramov and Petkovšek in 2002 proved a conjugate interpretation. Both results addre...

متن کامل

Proof of a Conjecture of Wilf and

Wilf and Zeilberger conjectured in 1992 that a hypergeometric term is proper-hypergeometric if and only if it is holonomic. We prove a version of this conjecture in the case of two discrete variables.

متن کامل

ذخیره 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: Mathematische Zeitschrift

سال: 2015

ISSN: 0025-5874,1432-1823

DOI: 10.1007/s00209-015-1412-0