Results 11 to 20 of about 17,873 (292)

The largest missing value in a composition of an integer

open access: yesDiscrete Mathematics, 2011
In this paper we find, asymptotically, the mean and variance for the largest missing value (part size) in a composition of an integer n. We go on to show that the probability that the largest missing value and the largest part of a composition differ by ...
Margaret Archibald, Arnold Knopfmacher
exaly   +4 more sources

Integer composition, connection Appell constants and Bell polynomials

open access: yesJournal of Numerical Analysis and Approximation Theory, 2021
We introduce an explicit form of the connection coefficients for Appell polynomial sequences via Toeplitz-Hessenberg matrix determinants. Generalizing, we give an explicit form of the connection coefficients for arbitrary   polynomial sequences and ...
Nataliia Luno
doaj   +10 more sources

A Note on the Compositions of an Integer [PDF]

open access: yesCanadian Mathematical Bulletin, 1958
Given an integer n, we define an r-composition of n as follows:An r-composition of n, (t1, ... , tr), is a set of ti where ti ≥ 1 is an integer for i = 1, ...
T. V. Narayana, G. E. Fulton
core   +3 more sources

Ω-Result for the index of composition of an integer

open access: yesInternational Journal of Number Theory, 2018
For each integer [Formula: see text], let [Formula: see text] be the index of composition of [Formula: see text], where [Formula: see text]. The index of composition of an integer measures the multiplicity of its prime factors.
Deyu Zhang, Yankun Sui, Wenguang Zhai
core   +2 more sources

A QoS‐aware service composition approach based on semantic annotations and integer programming

open access: yesInternational Journal of Web Information Systems, 2012
Purpose – The purpose of this paper is to propose a novel quality of service (QoS)-aware service composition approach, called SEQOIA, capable of defining at run-time a service composition plan meeting both functional and non-functional constraints and ...
Federica Paganelli
exaly   +2 more sources

A semantic-driven integer programming approach for QoS-aware dynamic service composition

open access: yes, 2011
Service-oriented specifications aim at effectively supporting run-time service discovery, composition and brokering. QoS-aware dynamic service composition relies on algorithms that synthesize the target functional work plans, while also taking into ...
D Giuli
exaly   +2 more sources

The Tantawy technique for modeling fractional KdV and mKdV positron-acoustic solitary waves in an electron-positron-ion plasma with regularized $$\kappa -$$ distribution [PDF]

open access: yesScientific Reports
This work investigates the dynamical behavior of both the integer and fractional-order positron-acoustic solitary waves (PASWs) in a collisionless, unmagnetized electron-positron-ion plasma composed of stationary positive ions, inertial cold positrons ...
Samir A. El-Tantawy   +4 more
doaj   +2 more sources

Countable composition closedness and integer-valued continuous functions in pointfree topology [PDF]

open access: yesCategories and General Algebraic Structures with Applications, 2013
‎For any archimedean$f$-ring $A$ with unit in whichbreak$awedge‎ ‎(1-a)leq 0$ for all $ain A$‎, ‎the following are shown to be‎ ‎equivalent‎: ‎ ‎1‎.
Bernhard Banaschewski
doaj   +1 more source

Aperiodic Compositions and Classical Integer Sequences

open access: yesJ. Integer Seq., 2017
In this paper we define the notion of singular composition of a positive integer. We provide a characterization of these compositions, together with methods for decomposing and also extending a singular composition in terms of other singular ...
FERRARI, MARGHERITA MARIA   +1 more
core   +4 more sources

The minimum weight t-composition of an integer [PDF]

open access: yesJournal of Mathematical Sciences, 2012
Let p and t, p ≥ t, be positive integers. A t-composition of p is an ordered t-tuple of positive integers summing p. If T = (s_1, s_2, . . . , s_t) is a t-composition p and W is a (p − (t − 1)) × t matrix, then W(T) = w_(s_1)+ w_(s_2)2... + w_(s_k)k is
Cardoso, D. M., Cerdeira, J. O.
core   +3 more sources

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