论文标题
一小部分开放问题
A small collection of open problems
论文作者
论文摘要
本文收集了我多年来遇到的一些问题，使我感到困惑，据我所知，这仍然是开放的。他们中的大多数是众所周知的，首先是其他作者所说的。在这个悲伤的锁定季节中，我谦虚地尝试为远距离的科学互动做出贡献。因此，最欢迎所有评论和信息交换。
This paper collects some problems that I have encountered during the years, have puzzled me and which, to the best of my knowledge, are still open. Most of them are well-known and have been first stated by other authors. In this sad season of lockdown, I modestly try to contribute to scientific interaction at a distance. Therefore all comments and exchange of information are most welcome.
