OTK> Do you have a copy of Intro to pali by Warder.
No.
OTK> He put gerund (compound gerund for me and undeclineable
OTK> /absolutive for many other teachers)
OTK> for pubbakiriya like gantva-having gone to follow by
OTK> another verb in a phrase.There are some pubbakiriya
OTK> ended in ya ,tvana .
Well, I looked up Sanskrit grammar and found that -tvaa and -ya
forms really correspond to Russian adverbial participles, however
both forms can denote either past or present.
Thus the term 'absolutive' is also fully justified.
OTK> And in other part he gave action noun (real gerund in
OTK> English grammar)for word like dassana which usually in
OTK> dative case with ya added.This kind is not absolutive
OTK> (undecline like the above )and it is not a verb like
OTK> above.
It seems that in this case he is right, dassana - seeing, dassanaaya -
in order to see, for the purpose of seeing. Maybe he should have called
this gerund.