Affirmation, Receptivity, Reconciliation
First Order Connectivities: Acts
Second Order Connectivities: Actions
Progress beyond the dyad - but not its annihilation - is by entering into action. Now all activity is initiated by acts of will. We distinguish three moments in the realization of events. First the act which establishes the dynamism by the contact of impulses. Second, the action, which sets a process in train by the relatedness of impulses. Third the activity, the 'on-going'. To give a rough mental picture of the term characters: affirmation is the impulse behind commitment; receptivity is the impulse that opens up a field of action; reconciliation is the impulse that enables the dynamism 'to be'. In concrete situations the impulses interpenetrate and blend with each other.
The triad is the first system that takes account of the flux of experience and is of great value in enabling the mind to grasp the originating impulses that are found connected and blended together in actions. The recognition that three independent factors have to be brought together for it to be possible that anything should happen has been found to be of immediate practical value.
JG Bennett on The Triad from an early version of 'The Dramatic Universe', book 1
Here are some references to various expressions of the triad over the ages:
Pythagoras (582 BC - 496 BC) http://www.astronomy.pomona.edu/archeo/greece/pythagoras/ideas.htm
Samkhya (Hindu – c. 500 BCE) http://www.kheper.net/topics/Samkhya/gunas.htm
Christian Trinity (c. 300 AD) http://en.wikipedia.org/wiki/Trinity
G. W. F. Hegel (1770-1831) http://www.marxists.org/reference/archive/hegel/help/easy.htm
Dialectical Materialism http://en.wikipedia.org/wiki/Dialectical_materialism
Jacques Marie Émile Lacan (1901-1981) http://humanities.uchicago.edu/faculty/mitchell/glossary2004/symbolicrealimaginary.htm
Contemporary Formalisms (example from China) http://www.zju.edu.cn/jzus/2000/0004/000420.htm