I have function whose output is a list and its length is some positive natural number which is less or equal than (S m). I am selecting n natural numbers from above output list by using firstn function. Please guide me how i should write in terms of lemma statement and how to relate length n of firstn function with Sm.
You may look at some related lemmas in the List
library with the command Search firstn length
.
Last updated: Oct 13 2024 at 01:02 UTC