0 votes 0 votes why lub of 2 and 3 does not exist ... upper bond of 2 and 3 is 12 18 and 36 ... least among them is 12 thus least upper bond is 12... right? question image : https://drive.google.com/open?id=0ByxeyAYDQMMXakFLYTZ6NE9OWEtOSjQ1LXp5dmhGS0FiT3dF Set Theory & Algebra set-theory lattice discrete-mathematics + – Ismail asked Aug 21, 2017 • edited Aug 21, 2017 by Bikram Ismail 969 views answer comment Share Follow See all 5 Comments See all 5 5 Comments reply Show 2 previous comments Bikram commented Aug 21, 2017 reply Follow Share Upload proper image plz.. and change the name of qstn 0 votes 0 votes Ismail commented Aug 21, 2017 reply Follow Share I was unable to upload the image so shared the link of the image ... 0 votes 0 votes Tesla! commented Aug 21, 2017 reply Follow Share Servers are running fine you should be able to upload image 0 votes 0 votes Please log in or register to add a comment.
1 votes 1 votes Bro here there is no edge between 12 and 18 therefore you cannot compare them.. Or you can say they are not related.. Which means you can't tell which one is least of them.. Therefore no lub exist for this pair vamp_vaibhav answered Aug 21, 2017 vamp_vaibhav comment Share Follow See 1 comment See all 1 1 comment reply Ismail commented Aug 21, 2017 reply Follow Share Thank u bro... got it... Another good explanation is given here... https://math.stackexchange.com/questions/254082/greatest-lower-bound-and-least-upper-bound-of-a-subset-of-a-given-poset 0 votes 0 votes Please log in or register to add a comment.
