I have remapped } as follows
noremap } }jz. so that as I go down paragraphs the cursor stays in the middle of the screen and to the first line of the next paragraph (usually).
That works fine. But I also use } after y to yank say the next 3 paragraphs to paste elsewhere. For example y3}. In this usage, I want Vim to ignore my mapping. (The rationale is that after a y there is no movement, so my modification to the movement should also be ignored after a y.)
Is there a way to map a movement key, but have a mapping be ignored after y, d, and perhaps even after number prefixes such as 2.