In this article, I offer a systematic description of the various uses of the preposition διά in the Early Byzantine archive of Qurrah ibn Sharik (VIII AD), an archive in which the preposition is attested remarkably frequently. Functionally, the use of διά is reminiscent of the Classical period, in that various older uses are attested that no longer occur in Modern Greek (such as PATH, INTERMEDIARY, and INSTRUMENT). However, there are also various innovative uses that are attested neither in the Classical nor in the Modern period (such as AGENT, SOURCE, and OPPONENT). The occurrence of these “dead ends” shows that the functional development of prepositions from Classical to Modern Greek should not be thought of as linear.

中文翻译：

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Διά 作为早期拜占庭希腊语中的多义介词：“死胡同”和古拉档案中的其他用途（公元八世纪）

在这篇文章中，我系统地描述了在古拉伊本沙里克 (VIII AD) 的早期拜占庭档案中介词 διά 的各种用途，在该档案中介词非常频繁地得到证实。从功能上讲，διά 的使用让人想起古典时期，因为证明了现代希腊语中不再出现的各种较旧的用法（例如 PATH、INTERMEDIARY 和 INSTRUMENT）。然而，也有各种创新用途在古典时期和现代时期都没有得到证实（例如 AGENT、SOURCE 和 OPNENT）。这些“死胡同”的出现表明，介词从古典希腊语到现代希腊语的功能发展不应被认为是线性的。