I need some advice: I'm dealing with the proof of Bertrand's postulate Proofs from THE BOOK. I understood the proof completly but as I tried to make a drawing of the intersection of the lower und upper boundary (which should be refering to the book at n=4000) I got some strange results.
My result for the intersection is round about n=5000. If someone has an explanation for it, it would be great.
Thanks a lot in advance.