
Online Journal of Analytic Combinatorics
ISSN 1931-3365 (online)
The Online Journal of Analytic Combinatorics (OJAC) is a peer-reviewed electronic journal previously hosted by the University of Rochester and now published by Combinatorial Press. OJAC features research articles that span a broad spectrum of topics, including analysis, number theory, and combinatorics, with a focus on the convergence and interplay between these disciplines. The journal particularly welcomes submissions that incorporate one or more of the following elements: combinatorial results derived using analytic methods, analytic results achieved through combinatorial approaches, or a synthesis of combinatorics and analysis in either the methodologies or their applications
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- Research article
- https://doi.org/10.61091/ojac-1208
- Full Text
- Online Journal of Analytic Combinatorics
- Issue 12, 2017
- Pages: 1-11 (Paper #8)
- Published: 31/12/2017
S. Ekhad and D. Zeilberger recently proved that the multivariate generating function for the number of simple singular vector tuples of a generic
- Research article
- https://doi.org/10.61091/ojac-1207
- Full Text
- Online Journal of Analytic Combinatorics
- Issue 12, 2017
- Pages: 1-13 (Paper #7)
- Published: 31/12/2017
In this paper, we define the q-analogue of the so-called symmetric infinite matrix algorithm. We find an explicit formula for entries in the associated matrix and also for the generating function of the k-th row of this matrix for each fixed k. This helps us to derive analytic and number theoretic identities with respect to the q-harmonic numbers and q-hyperharmonic numbers of Mansour and Shattuck.
- Research article
- https://doi.org/10.61091/ojac-1206
- Full Text
- Online Journal of Analytic Combinatorics
- Issue 12, 2017
- Pages: 1-11 (Paper #6)
- Published: 31/12/2017
Bargraphs are lattice paths in
- Research article
- https://doi.org/10.61091/ojac-1205
- Full Text
- Online Journal of Analytic Combinatorics
- Issue 12, 2017
- Pages: 1-25 (Paper #5)
- Published: 31/12/2017
We survey four instances of the Fourier analytic ‘transference principle’or ‘dense model lemma’, which allows one to approximate an unbounded function on the integers by a bounded function with similar Fourier transform. Such a result forms a component of a general method pioneered by Green to count solutions to a single linear equation in a sparse subset of integers.
- Research article
- https://doi.org/10.61091/ojac-1204
- Full Text
- Online Journal of Analytic Combinatorics
- Issue 12, 2017
- Pages: 1-7 (Paper #4)
- Published: 31/12/2017
Let
- Research article
- https://doi.org/10.61091/ojac-1203
- Full Text
- Online Journal of Analytic Combinatorics
- Issue 12, 2017
- Pages: 1-74 (Paper #3)
- Published: 31/12/2017
Let
We also get similar results for other explicit constructions of
- Research article
- https://doi.org/10.61091/ojac-1202
- Full Text
- Online Journal of Analytic Combinatorics
- Issue 12, 2017
- Pages: 1-22 (Paper #2)
- Published: 31/12/2017
We define a new class of generating function transformations related to polylogarithm functions, Dirichlet series, and Euler sums. These transformations are given by an infinite sum over the jth derivatives of a sequence generating function and sets of generalized coefficients satisfying a non-triangular recurrence relation in two variables. The generalized transformation coefficients share a number of analogous properties with the Stirling numbers of the second kind and the known harmonic number expansions of the unsigned Stirling numbers of the first kind.
We prove a number of properties of the generalized coefficients which lead to new recurrence relations and summation identities for the k-order harmonic number sequences. Other applications of the generating function transformations we define in the article include new series expansions for the polylogarithm function, the alternating zeta function, and the Fourier series for the periodic Bernoulli polynomials. We conclude the article with a discussion of several specific new “almost” linear recurrence relations between the integer-order harmonic numbers and the generalized transformation coefficients, which provide new applications to studying the limiting behavior of the zeta function constants, ζ(k), at integers k ≥ 2.
- Research article
- https://doi.org/10.61091/ojac-1201
- Full Text
- Online Journal of Analytic Combinatorics
- Issue 12, 2017
- Pages: 1-10 (Paper #1)
- Published: 31/01/2017
Generating functions for Pell and Pell-Lucas numbers are obtained. Applications are given for some results recently obtained by Mansour [Mansour12]; by using an alternative approach that considers the action of the operator
- Research article
- https://doi.org/10.61091/ojac-11sp1
- Full Text
- Online Journal of Analytic Combinatorics
- Issue 11, 2016
- Pages: 1-8 (Paper #1)
- Published: 31/12/2016
Motivated by the Monthly problem #11515, we prove further interesting formulae for trigonometric series by means of telescoping method.
- Research article
- https://doi.org/10.61091/ojac-1107
- Full Text
- Online Journal of Analytic Combinatorics
- Issue 11, 2016
- Pages: 1-10 (Paper #7)
- Published: 31/12/2016
The main theorem establishes the generating function
where
Here