scholarly journals Several generalizations on Wolstenholme Theorem

2022 ◽  
Vol 355 ◽  
pp. 02003
Author(s):  
Yuyang Zhu ◽  
Jing Huang ◽  
Lili Wang ◽  
Ming Li

This paper generalizes Wolstenholme theorem on two aspects. The first generalization is a parameterized form: let p > k + 2, k ≥ 1, ∀t ∈ ℤ, then ${{(pt + p - 1)!} \over {(pt)!}}\mathop \sum \limits_{m = 0}^{k - 1} {( - 1)^m}\mathop \sum \limits_{1 \le {i_l} < \cdots < {i_{k - m}} \le p - 1} {{{p^{k - (m + 1)}}} \over {\mathop \prod \limits_{l = 1}^{k - m} (pt + {i_l})}} \equiv 0{\left( {\bmod {p^{k + 1}}} \right)^.}$ The second generalization is on composite number module: Let 1overa be the x in congruent equation ax ≡ 1(mod m)(1 ≤ x < m), if m ≥ 5, then $$\matrix{ {\sum\limits_{\scriptstyle (k,m) = 1, \hfill \atop \scriptstyle 1 \le j \le m \hfill} {{{\left( {{1 \over k}} \right)}^2}} } \hfill & \equiv \hfill & {{m \over 6}[2m\varphi (m) + \prod\limits_{p|m} {(1 - p)]{{(\bmod m)}^{\;;}}} } \hfill \cr {\sum\limits_{\scriptstyle (k,m) = 1, \hfill \atop \scriptstyle 1 \le j \le m \hfill} {{{\left( {{1 \over k}} \right)}^3}} } \hfill & \equiv \hfill & {{{{m^2}} \over 4}[m\varphi (m) + \prod\limits_{p|m} {(1 - p)](\bmod m){\;^;}} } \hfill \cr {\sum\limits_{\scriptstyle (k,m) = 1, \hfill \atop \scriptstyle 1 \le j \le m \hfill} {{{\left( {{1 \over k}} \right)}^4}} } \hfill & \equiv \hfill & {{m \over {30}}[6{m^3}\varphi (m) + 10{m^2}\prod\limits_{p|m} {(1 - p) - \prod\limits_{p|m} {(1 - {p^3})](\bmod m){\;^;}} } } \hfill \cr {\sum\limits_{\scriptstyle (k,m) = 1, \hfill \atop \scriptstyle 1 \le j \le m \hfill} {{{\left( {{1 \over k}} \right)}^r}} } \hfill & \equiv \hfill & {{m^r}\sum\limits_{d|m} {\mu (d){{\left( {{m \over d}} \right)}^{ - r}}\sum\limits_{k = 1}^{{m \over d}} {{k^r}(\bmod m){\;^.}} } } \hfill \cr } $$ Where φ(x) is Euler function , μ(x) is Möbius function.

2016 ◽  
Vol 5 (1) ◽  
pp. 31
Author(s):  
SRIMITRA K.K ◽  
BHARATHI D ◽  
SAJANA SHAIK ◽  
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Order ◽  
2021 ◽  
Author(s):  
Antonio Bernini ◽  
Matteo Cervetti ◽  
Luca Ferrari ◽  
Einar Steingrímsson

AbstractWe initiate the study of the enumerative combinatorics of the intervals in the Dyck pattern poset. More specifically, we find some closed formulas to express the size of some specific intervals, as well as the number of their covering relations. In most of the cases, we are also able to refine our formulas by rank. We also provide the first results on the Möbius function of the Dyck pattern poset, giving for instance a closed expression for the Möbius function of initial intervals whose maximum is a Dyck path having exactly two peaks.


1987 ◽  
Vol 101 (2) ◽  
pp. 221-231 ◽  
Author(s):  
Joseph P. S. Kung

AbstractLet and ℳ be subsets of a finite lattice L. is said to be concordant with ℳ if, for every element x in L, either x is in ℳ or there exists an element x+ such that (CS1) the Möbius function μ(x, x+) ≠ 0 and (CS2) for every element j in , x ∨ j ≠ x+. We prove that if is concordant with ℳ, then the incidence matrix I(ℳ | ) has maximum possible rank ||, and hence there exists an injection σ: → ℳ such that σ(j) ≥ j for all j in . Using this, we derive several rank and covering inequalities in finite lattices. Among the results are generalizations of the Dowling-Wilson inequalities and Dilworth's covering theorem to semimodular lattices, and a refinement of Dilworth's covering theorem for modular lattices.


2014 ◽  
Vol 57 (2) ◽  
pp. 381-389
Author(s):  
Adrian Łydka

AbstractWe study analytic properties function m(z, E), which is defined on the upper half-plane as an integral from the shifted L-function of an elliptic curve. We show that m(z, E) analytically continues to a meromorphic function on the whole complex plane and satisfies certain functional equation. Moreover, we give explicit formula for m(z, E) in the strip |ℑz| < 2π.


1990 ◽  
Vol 42 (2) ◽  
pp. 185-189 ◽  
Author(s):  
D.E. Taylor

The cyclotomic identitywhere and μ is the classical Möbius function, is shown to be a consequence of a natural isomorphism of species.


2015 ◽  
Vol DMTCS Proceedings, 27th... (Proceedings) ◽  
Author(s):  
Francois Viard

International audience We construct a poset from a simple acyclic digraph together with a valuation on its vertices, and we compute the values of its Möbius function. We show that the weak order on Coxeter groups $A$<sub>$n-1$</sub>, $B$<sub>$n$</sub>, $Ã$<sub>$n$</sub>, and the flag weak order on the wreath product &#8484;<sub>$r$</sub> &#8768; $S$<sub>$n$</sub> introduced by Adin, Brenti and Roichman (2012), are special instances of our construction. We conclude by briefly explaining how to use our work to define quasi-symmetric functions, with a special emphasis on the $A$<sub>$n-1$</sub> case, in which case we obtain the classical Stanley symmetric function. On construit une famille d’ensembles ordonnés à partir d’un graphe orienté, simple et acyclique munit d’une valuation sur ses sommets, puis on calcule les valeurs de leur fonction de Möbius respective. On montre que l’ordre faible sur les groupes de Coxeter $A$<sub>$n-1$</sub>, $B$<sub>$n$</sub>, $Ã$<sub>$n$</sub>, ainsi qu’une variante de l’ordre faible sur les produits en couronne &#8484;<sub>$r$</sub> &#8768; $S$<sub>$n$</sub> introduit par Adin, Brenti et Roichman (2012), sont des cas particuliers de cette construction. On conclura en expliquant brièvement comment ce travail peut-être utilisé pour définir des fonction quasi-symétriques, en insistant sur l’exemple de l’ordre faible sur $A$<sub>$n-1$</sub> où l’on obtient les séries de Stanley classiques.


2019 ◽  
Vol 16 (2) ◽  
pp. 377-401 ◽  
Author(s):  
Giovanni Zini

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