Have you ever read about Project Orion and Project Daedalus?
(Within the {} is a regex, meaning: exactly 32 characters, each one taken out of 0123456789ABCDEF)Let A be the set of all possible DVD images and B:={"[0-9a-f]\{32\}"}
Show that the function md5 checksum function
md5sum:A→B
cannot be injective.
Thank you for your interest. Changing the subject, is everything okay there? Are you feeling well?