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:B
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