Unfortunately, the corresponding author was published incorrectly in the original article. The correct corresponding author is Dr. Bidisha Roy.

中文翻译：

---

更正为：关于$$ {\ mathbb {Z}} / n {\ mathbb {Z}} $$ Z / n Z中的f-单位的问题

不幸的是，相应的作者在原始文章中发表不正确。正确的通讯作者是Bidisha Roy博士。