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zbMATH Open
Article . 2015
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Some Parity Statistics in Integer Partitions

Some parity statistics in integer partitions
Authors: Blecher, Aubrey; Mansour, Toufik; Munagi, Augustine O.;

Some Parity Statistics in Integer Partitions

Abstract

Summary: We study integer partitions with respect to the classical word statistics of levels and descents subject to prescribed parity conditions. For instance, a partition with summands \(\lambda_1\geq \cdots \geq \lambda_k\) may be enumerated according to descents \(\lambda_i>\lambda_{i+1}\) while tracking the individual parities of \(\lambda_i\) and \(\lambda_{i+1}\). There are two types of parity levels, \(E=E\) and \(O=O\), and four types of parity-descents, \(E>E\), \(E>O\), \(O>E\) and \(O>O\), where \(E\) and \(O\) represent arbitrary even and odd summands. We obtain functional equations and explicit generating functions for the number of partitions of \(n\) according to the joint occurrence of the two levels. Then we obtain corresponding results for the joint occurrence of the four types of parity-descents. We also provide enumeration results for the total number of occurrences of each statistic in all partitions of \(n\) together with asymptotic estimates for the average number of parity-levels in a random partition.

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Keywords

Combinatorial aspects of partitions of integers, generating function, level, Exact enumeration problems, generating functions, descent, formula, Asymptotic enumeration, partition

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
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