『椿說弓張月』(以下簡稱『弓張月』)為曲亭馬琴從文化四年(1807)開始耗時四年所完成的作品。故事中源為朝一行人雖然打敗妖仙人曚雲，但之後彼此卻互相推讓琉球王國的王位，而王位就一直空著沒有人繼承。在這之後打破僵局的契機終於出現。琉球的漁夫捕獲到稀有的人魚想要獻給為朝，但為朝沒有接受，之後讓給寧王女，寧王女也同樣沒有接受而轉讓給舜天丸。在彼此推讓的過程中時間一直流逝，最後人魚就因此而腐爛。 　　在『日本書紀』中也有和上述相似的內容。『弓張月』中的內容可以推論是參考『日本書紀』而作成的，但『日本書紀』中漁夫所捕獲到的是鮮魚而並非人魚。因此，本論文以『弓張月』為對象，分析馬琴將鮮魚更改成人魚的理由，並檢討人魚與琉球王位繼承的關連，進而考察分析作中琉球的王權問題。 　　本論文共有五章，第一章論述研究動機、目的與先行研究及研究方法。第二章分析當時江戶時代的國學者及政治家的琉球觀，進而探討當時人們對於琉球所抱持的看法。接著在第三章則先分析中國和日本的人魚傳說，再回歸『弓張月』探討人魚的出現所帶來的影響。第四章則是分析為朝、寧王女、舜天丸三人的王權繼承問題。最後在第五章的結論整理上述的論點，探討馬琴使用人魚的理由以及琉球的王權繼承問題。

本論文旨在說明西藏歷史在七至十一世紀間王權演變的情形。全文除前言、結論外， 共有四章八節，共計八萬言。 第一章：旨在說明雅龍王朝興起的情形。 第二章：旨在說宗教勢力的介入，及其對王權的影響。 第三章：旨在分析雅龍王朝滅亡的原因，及其邊區地方勢力的興起。 第四章：旨在陳述王朝崩潰後，佛教勢力的延續及其影響。

自古以來，八咫鏡、草薙劍、八坂瓊勾玉之三種神器被視為日本王權的象徵。在日本文學中，關於三種神器的描述也不少。其實，關於鏡、劍、玉的記載在中國文學中早已出現，鏡、劍、玉各自背後皆有其涵義。另根據儒教與道教經典，可瞭解中國王權思想與「天」的思想有所關連，而天的思想也對中國的王權造成莫大影響。因此在論及日本王權思想之時，必須追溯至中國古代天的思想。 　　日本王權應如何以神道的觀點解釋呢？眾所周知，日本天皇思想中蘊含著「萬世一系」的思想，身為天照大神子孫的天皇因而世世代代可統治這個國家。事實上，在《古事記》與《日本書紀》中，對此「天壤無窮的神諭」已有著墨，而三種神器也成為遵守此神諭之象徵。 　　本論文以古代及中世日本文學闡明三種神器的起源與意義，再從比較思想的觀點，探討三種神器與日本王權思想及中國思想三者間之關聯。最後再從日本神道之觀點，論述以三種神器為象徵之日本王權思想。期藉以上研究方法，釐清中日兩國思想之異同，進而理解日本固有的神道思想。 / The Imperial Regalia of Japan consists of the sword Kusanagi no Tsurugi, the mirror Yata no Kagami, and the jewel Yasakani no Magatama. From ancient times, they have been regarded as the symbol of power, which belongs to Emperors of Japan. There are quite a few descriptions about the Imperial Regalia of Japan in Japanese literature as well. Actually, the thought of mirror, sword and jewel has already been described in Chinese literature, and each of them has their own meanings. In addition, according to the books of Confucianism and Daoism, the ideology of the emperor of China is relative to the thought of “sky,” and the thought of sky also greatly influenced the power of Chinese emperors. Therefore, it is necessary to trace back to the thought of sky in ancient China while mentioning the ideology of the Emperor of Japan. How should the power of the Emperor of Japan be explained by means of Shinto? As everyone knows, emperors of Japan rule the country as descendants of Amaterasu due to the ideology of the emperors’ unbroken line. Actually, the proof of it is called “Tenjo Mukyu no Shinchoku”, which has already shown in “Kojiki” and “Nihon Shoki.” It means the oracle, which is as eternal as heaven and earth, and the Imperial Regalia of Japan just became the symbol of the oracle. In this thesis, literatures of ancient Japan and medieval Japan will be used to describe the origins and meanings of the Imperial Regalia of Japan. Next, I will manage to explore the connection between the Imperial Regalia of Japan, ideology of Japanese emperor and Chinese ideology from a comparative point of view, and expound the ideology of the emperor of Japan symbolized by Imperial Regalia of Japan. By means of the above research method, the ideology of Japan and China is expected to be clarified in order to know more about the innate ideology of Japan — Shinto.