A partially ordered set is said to be a lattice if every two elements in the set have
A. a unique least upper bound
B. a unique greatest lower bound
C. both (A) and (B)
D. none of the above
Answer:C
A partially ordered set is said to be a lattice if every two elements in the set have
A. a unique least upper bound B. a unique greatest lower bound C. both (A) and (B) D. none of the above