("pervasion") is a word that comes
to mind when you think of the word "pervasion."
Vyapti is a basic requirement in traditional Indian
philosophy that determines whether an inference is legitimate (anumana).
Three words are used in the recognized form of an inference:
an assertion (pratijna) that contains the object to be proven, a reason (hetu)
that contains evidence to support the statement, and supporting instances
(drshtanta).
The statement is that there is fire on the mountain, and the
explanation is that there is smoke on the mountain, with the underlying premise
that smoke usually follows fire.
The reason accounts for every example of the object to be
demonstrated in a valid inference; this invariable relationship between cause
and effect is known as vyapti, or pervasion.
Further Reading:
Presuppositions of India's Philosophies, edited by Karl H. Potter, published in 1972.
You may also want to read more about Hinduism here.
Be sure to check out my writings on religion here.