《易緯‧乾鑿度》的曆法與積年

Calendar and Accumulation of Years in Yiwei Qianzaodu

本文先就《易緯‧乾鑿度》求卦主歲術中所載資料，進行歸納、分析、比較，還《乾鑿度》曆法概貌，證其為《三統曆》與古《四分曆》雜糅而成的曆法，特適用於象數推步。後旁及帝堯生年、即位年、演紀作曆年與文王受命年和各項積年、曆元等之考定，承前賢研究的成果，繼以演算辨證，去誤存真，一撥《乾鑿度》曆數之迷霧，為《易緯》曆術體系的建構奠定基礎。

This thesis firstly concludes, analyses and compares the data for the Methods of calculation for the divinatory yeas (Suasui) from Yiwei Qian Zaodu, and tries to revert the original survey of the calendar, so as to demonstrate clearly that the calendar mixed with the San Tong Calendar and Si fen Calendar are especially suitable for the deduction of the image - number system (Xiangshu). Thus, extends to the investigation of the year of the birth of King Yao, the year of the Enthronement, the year of making the calendar, the year of King Wen's acceptance of the divine duty, and all the other kinds of accumulation of years, as well as the year starting the performance of the calendar, etc. Based on the outcomes of the previous studies, the thesis tries to continue the calculation and the differentiation, to get rid of the fake and retain the genuine, to uncover the dense veil of the calendar of Qian Zaodu, so as to construct the foundation of the calendar system.