Nájdite minimum, maximum, infimum a supremum množín A=(0,1), B=, C=, D.
inf A=0, sup A=1 (nemá minimum ani maximum),
inf B=0, max B= sup B=1 (nemá minimum),
inf C= min C=0, sup C=1 (nemá maximum),
inf D =min D=0, sup D= max D=1.