I can only say that I can give you some reference information. Thinking about one thing requires you to read to a certain extent. This place is just a history lover. Mm-hmm.

Alexandria scholars in Hellenistic period should refer to scholars who concentrated in the capital Alexandria during Ptolemy Dynasty (Egypt).

Baidu Encyclopedia: Ptolemy I Soter encouraged cultural undertakings, developed industry and commerce, and promoted the Hellenization of Egypt. The most prominent one is that Ptolemy I Soter personally ordered the establishment of the world-famous Alexandria Library, which was the largest library in the world at that time, with a collection of about 700,000 books. Its completion attracted a large number of scholars at that time, and famous scholars such as Archimedes and Euclid came here to engage in research, which promoted the research of ancient western literature, mathematics, mechanics, geography, astronomy, anatomy, physiology and other disciplines to make great progress. For example, the first revised edition of Homer's epic was written by Zhi Nuo Dodds, the librarian of Alexandria. After measuring in Ptolemy Egypt, erato Lini calculated the length of meridian (only about 300 kilometers away from reality), and further put forward the "Earth Circle Theory".

Scientific achievements or something-I always feel that I don't need to think too much. Baidu Encyclopedia is also quite representative. Some landlords went to Wanfang to search for papers to see if there were any experts who wrote articles in this field. Senior can only help you add fuel here.