试论江永河洛变先后天八卦图式思想

江永为清朝杰出的经学家、天文学家、音韵学家。他终生潜心于教学与著述,为探索科学与实学做出了鲜明的表率。在易学上则比较注重对河图、洛书的阐发。江永主张河图、洛书衍生先、后天八卦。为论证自己的观点,江永运用了"河图中宫五、十"生成万物的思想。他认为河图之四方、八个数字皆由五、十所生成。只要我们让河图横列的乾九、兑四、离三、震八站立起来排列在左边,让河图纵列的巽二、坎七、艮六、坤一排列在右边,即可以得到先天八卦图。接着,把河图五行与八卦五行相对应,在河图五行方位中引入先天八卦五行,则后天八卦图跃然纸上。

On JIANG Yong's Idea Revealed in His Transformation of the River Map and Luo Chart into the Prenatal and Postnatal Eight-trigram Diagrams

An outstanding astrologist, phonologist, and expert at Confucian Classics Studies, JIANG Yong had whole-heartedly devoted himself to the teaching and writing, setting a good example in probing into science and practical studies. He pays more attention to the expansion of the River Map and Luo Chart. JIANG Yong asserted that the River Map and Luo Chart conceive the Prenatal and Postnatal Eight-trigram Diagrams. To prove his assertion, JIANG took use of the idea that number 5 and 10 in the central palace can ...