周易卦序结构分析
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张清宇
内容提要:易卦是一类古老而又神奇的符号,可以有种种解释。采用内涵格解释,把卦的交错和交综解释成内涵格中的代数运算,由此引出错综不变组的概念并用于分析周易卦序结构。64卦或两个一组,或四个一组,阴阳平衡,循环往复,形成20个错综不变组。卦有主从之别(从卦也叫散卦)。主卦6组16卦,上下篇各3组,统散卦而立其体,决定周易卦序的基本结构。上篇3组象天而圆,先正后交,以乾坤为始,统8散卦,继之以乾坤之交泰否,统16散卦,终之以坎离。下篇3
组法地而方,先交后正,以震艮巽兑之交咸恒损益为始,统16散卦,继之以震艮巽兑,统8散卦,终之以坎离之交既济未济。散卦14组48卦,按错综组、跨篇组、跨区组、自综组四部分从左至右定一大序,又按10小区(上下篇各有正二区和交三区)从上至下成另一大序,观之散乱,法象实存。序卦的总原则为以阳馭阴,以刚制柔,首乾而主长男。整个卦序井然森然杂而不乱,逆顺错综,处处对称,一往一复,妙趣无穷,呈现出一种两向(从左至右、从上至下)多层次(篇、区、组、卦)的平面结构,见文中周易卦序结构图。
This paper is a successive one of the author's preceding papers. It consists of three parts. The author associates eight trigrams with eight elements of the intensinal lattice 8 in terms of their ordering determined in Chou I, and constructs a sequence of hexagrams, which is arranged into a figure of 8 squares. For any hexagram(x, y), its left coordinate x and right coordinate y have either same signs or different signs; the former is called the "Class-corresponding hexagram", and the latter the "non-Class-corresponding hexagram". And, the absolute values of x and y are either same or not. If they are same, then (x, y) is called the "Main hexagram", otherwise the "Secondary hexagram". Main hexagrams have determined the basic hexagram-ordering structure. The author analyzes the hexagram-ordering by applying some concepts from the figure of eight squares. The 64 hexagrams are divided into 20 groups. Each group forms a set closing for both the opposite operation and the inversw operation. The author determins the order among the groups and the order among hexagrams in each group, and therefore clarifies the order among hexagrams thoroughly with some principles which are embodiments of Shen you-ding principle of deriving Yin by Yang. The hexagram-ordering structure of Chou I is shown on figure 2 in the paper.
关键词:周易;卦序结构;内涵格;主卦;从卦;散卦Chou I;Hexagram;Main Hexagram;Secondary Hexagram;Hexagram-ordering Structure;Intensional Lattice
周易卦序,错综复杂,不呈线性序,而显两向多层次的平面结构。经分上下,卦别主从,错综不变成组;从左至右,从上至下,依篇、区、组为序;总原则以阳馭阴,以刚制柔,首乾而主长男[1]。
64卦或两个一组,或四个一组,阴阳平衡,往复循环,形成20个错综不变组。卦有主从之别(从卦也叫散卦)[2]。主卦6组16卦,上下篇各3组,统散卦而立其体,决定周易序卦之骨构。上篇3组6卦象天而圆,先正后交,以乾坤为始,统8散卦,继之以乾坤之交泰否,统16散卦,终之以坎离。下篇3组10卦法地而方,先交后正,以震艮巽兑之交咸恒损益为始,统16散卦,继之以震艮巽兑,统8散卦,终
之以坎离之交既济未济。散卦14组48卦,错综组、跨篇组、跨区组、自综组四部分从左至右定一大序,又按10小区(上下篇各有正二区和交三区)从上至下成另一大序,观之散乱,法象实存。上下篇各有抱、插、嵌三势。又有回互、交错、顺布三序:上篇用回互,下篇用顺布,交错通上下篇。井然森然杂而不乱,逆顺错综,处处对称,一往一复,妙趣无穷。
兹分三节,详论于下。
一、阴阳平衡,错综不变
关于易图,我采内涵格解释,详见文[3]。内涵格概念取自相干命题逻辑的语义理论,它被定义为带阳滤子的德摩根格。德摩根格是带有补运算的分配格,补运算满足双重否定律和逆否律。阴阳两仪,阳先阴后,天上地下,成内涵格2。老少阴
阳四象,老先少后、阳顺阴逆,成内涵格4。乾震坎艮兑离巽坤八经卦,老长中少、阳顺阴逆,成内涵格8。六十四卦之间的错综关系被解释为内涵格64中的补运算和倒序运算,这两运算也因此而分别被称为交错运算和交综运算。重卦生成法被解释成内涵格的积,因此“两仪生四象”释为2×2=4,“四象生八卦”释为2×4=8。用内涵格8与其自身作积就得内涵格64,积中元素的坐标表示恰好相应于卦的内外体说法,内卦为左坐标,外卦为右坐标.如果以数字3、2、l、0分别表示老、长、中、少,
并以正负号“+”和“-”分别表示阳和阴,那么乾震坎艮兑离巽坤八经卦就可依次记成+3、+2、+1、+0、-0、-1、-2、-3;四阳卦的绝对值依次从大到小(3、2、1、0),四阴
卦的绝对值依次从小到大(0、1、2、3),一顺一逆。内涵格64中元素的坐标可以由这些正负数(或八经卦的卦名)来表示。邵雍的连续二分法恰好就是连续不断地作内
涵格2、4、8、16、以及32与内涵格2的积。内涵格的积的说法统一了卦图演成
的重卦法和邵雍的连续二分法。我认为,内涵格解释比二进制解释更好。为了确定周易卦序结构,我编制出如下的一个八宫图(见图1):