In a paper, I need to talk about things "coming into and leaving" existence multiple times. I feel this phrase is clumsy and there are definitely better ways of saying it that I just can't think of for some reason. I have used "entering and exiting" existence, "being created and removed", and the others. What is the obvious, clean way that I am missing? Is there one? Comes into and goes out of?
The first word that came to mind is transition if you considered non-existence and emptiness as a stage too.
a : passage from one state, stage, subject, or place to another : CHANGE
b : a movement, development, or evolution from one form, stage, or style to another