0 votes 0 votes According to the answer first is’nt well ordered but we do have least element 0 there, how is 0 not least element? Mathematical Logic lattice + – bts1jimin asked Jan 21, 2019 bts1jimin 532 views answer comment Share Follow See all 4 Comments See all 4 4 Comments reply Abhisek Tiwari 4 commented Jan 21, 2019 reply Follow Share I think its not the reason. for well order set every subset must have least element lets take subset (a,b) as its rational number there is infinite number bw a to a+1 so no unique least element. 0 votes 0 votes bts1jimin commented Jan 21, 2019 reply Follow Share we are having intersection here 0 votes 0 votes Magma commented Jan 21, 2019 reply Follow Share ii) 0 votes 0 votes bts1jimin commented Jan 22, 2019 reply Follow Share @Magma why not i? 0 is least there 0 votes 0 votes Please log in or register to add a comment.