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Parity bias in partitions
European Journal of Combinatorics ( IF 1 ) Pub Date : 2020-05-29 , DOI: 10.1016/j.ejc.2020.103159
Byungchan Kim , Eunmi Kim , Jeremy Lovejoy

Let po(n) denote the number of partitions of n with more odd parts than even parts and let pe(n) denote the number of partitions of n with more even parts than odd parts. Using q-series transformations we find a generating function for po(n)pe(n), which implies that po(n)>pe(n) for all positive integers n2. Using combinatorial mappings we prove a stronger result, namely that for all n>7 we have 2pe(n)<po(n)<3pe(n). Finally, using asymptotic methods we show that po(n)pe(n)1+2 as n. We also examine related properties for two other types of partitions.



中文翻译:

分区中的奇偶校验偏差

pØñ 表示的分区数 ñ 奇数部分比偶数部分多,让 pËñ 表示的分区数 ñ偶数部分比奇数部分更多。使用q系列转换,我们找到了一个生成函数 pØñ-pËñ,这意味着 pØñ>pËñ 对于所有正整数 ñ2。使用组合映射,我们证明了更好的结果,即对于所有人ñ>7 我们有 2pËñ<pØñ<3pËñ。最后,使用渐近方法证明pØñpËñ1个+2ñ。我们还将检查其他两种类型的分区的相关属性。

更新日期:2020-05-29
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